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Powerhead Gasket Set
Your Price:
$190.99

Powerhead Gasket Set

676-18-4319

Interchanges/Replaces

GLM

  • 39250

Mallory

  • 9-64201
  • 9-64212

Mercury Marine

  • 27-11338A85
  • 27-11338A88
  • 27-89221A32
  • 27-89221A84
  • 27-89221A85
  • 27-89221A88

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-0129GLM
  • 30670
Mallory
  • 9-60062
Mercury Marine
  • 27-65744
  • 27-657441
  • 27-657442
  • 27-657443
6Reed Block Gasket N/A
18-0135GLM
  • 32880
Mercury Marine
  • 27-78246
  • 27-782461
1Adapter Cover Gasket N/A
18-0182GLM
  • 30610
Johnson/Evinrude Outboard
  • 310058
Mallory
  • 9-60002
Mercury Marine
  • 27-62386
  • 27-62386001
Mercury Race Outboard
  • 27-62386001
2Thermostat Gasket N/A
18-0359GLM
  • 30740
Mercury Marine
  • 27-67275
  • 27-672751
1Induction Silencer Cover Gasket N/A
18-0384GLM
  • 32350
Mercury Marine
  • 27-817533
  • 27-89221
  • 27-892211
  • 27-8M0027781
3Carburetor Gasket N/A
18-0858GLM
  • 81430
Mallory
  • 9-76516
Mercruiser Stern Drive
  • 25-54029
Mercury Marine
  • 25-54029
Mercury Sport Jet
  • 25-54029
1O-Ring N/A
18-0860GLM
  • 81520
Mercruiser Stern Drive
  • 25-62700
Mercury Marine
  • 25-62700
Mercury Sport Jet
  • 25-62700
1O-Ring N/A
18-0936GLM
  • 31990
Mallory
  • 9-60057
Mercury Marine
  • 27-67624
  • 27-78690
  • 27-78690002
Mercury Sport Jet
  • 27-78690
  • 27-78690002
2Relief Valve Plate Gasket N/A
18-0952GLM
  • 32330
Mercruiser Stern Drive
  • 27-88907003
Mercury Marine
  • 27-88907
  • 27-88907003
Mercury Sport Jet
  • 27-88907
2Relief Valve Plate Gasket N/A
18-2501GLM
  • 31680
Mallory
  • 9-60060
Mercury Marine
  • 27-67738
  • 27-93536
  • 27-935361
1Reed Block Housing Gasket N/A
18-2502GLM
  • 32150
Mercury Marine
  • 27-87396
  • 27-90484
  • 27-904841
Mercury Race Outboard
  • 27-90484
  • 27-904841
2Divider Plate Gasket N/A
18-2503GLM
  • 32530
Mercury Marine
  • 27-78068
  • 27-99177
  • 27-991771
  • 27-991772
1Drive Shaft Housing to Exhaust Plate Gasket N/A
18-2509GLM
  • 31690
Mercury Marine
  • 27-67751
3Carburetor Mounting Gasket N/A
18-2510GLM
  • 32450
Mercury Marine
  • 27-96761
  • 27-967611
1Reed Block Housing Gasket N/A
18-2511GLM
  • 32510
Mercury Marine
  • 27-67074
  • 27-88727
  • 27-99173
  • 27-99173 2
  • 27-991731
  • 27-991734
1Drive Shaft Housing to Exhaust Plate Gasket N/A
18-2513GLM
  • 30890
Mallory
  • 9-60049
  • 9-60050
Mercury Marine
  • 27-11338
  • 27-67208
Mercury Sport Jet
  • 27-11338
2Crankcase Gasket (Cyl. Block Sealing V-6) N/A
18-2803GLM
  • 32120
Mercury Marine
  • 27-90430
  • 27-904301
3Carburetor Mounting Gasket N/A
18-2808GLM
  • 32440
Mercury Marine
  • 27-96278
Mercury Race Outboard
  • 27-96278
2Cylinder Cover Gasket N/A
18-2826GLM
  • 31040
Mallory
  • 9-60036
Mercruiser Stern Drive
  • 27-33146
  • 27-856704
Mercury Marine
  • 27-33146
  • 27-85610
  • 27-856101
1Water Pump Base Gasket N/A
18-2914GLM
  • 31010
Mallory
  • 9-60034
Mercruiser Stern Drive
  • 27-32433
  • 27-856081
  • 27-8M0090319
Mercury Marine
  • 27-30603
  • 27-32433
  • 27-85608
  • 27-856081
  • 27-8M0090319
1Water Pump Gasket N/A
18-2915GLM
  • 31020
Mallory
  • 9-60035
Mercruiser Stern Drive
  • 27-32434
  • 27-856091
  • 27-858524
Mercury Marine
  • 27-30604
  • 27-32434
  • 27-85609
  • 27-856091
  • 27-858524
1Water Pump Gasket N/A
18-2919GLM
  • 31050
Mallory
  • 9-60031
Mercruiser Stern Drive
  • 27-426311
Mercury Marine
  • 27-42631
  • 27-426311
1Water Pump Gasket N/A
18-3110GLM
  • 12830
Mallory
  • 9-43604
Mercruiser Stern Drive
  • 26-38970
Mercury Marine
  • 26-29677
  • 26-36557A1
  • 26-38970
2Water Pump Housing Bushing N/A
18-3862GLM
  • 35860
Mallory
  • 9-63853
Mercury Marine
  • 27-41246
  • 27-41246-1
  • 27-412462
  • 27-41247
  • 27-41247T01
  • 27-96543
2Head Gasket N/A
18-7153GLM
  • 81180
Mallory
  • 9-76505
Mercruiser Stern Drive
  • 25-25439
Mercury Marine
  • 25-25439
Mercury Race Outboard
  • 25-25439
Mercury Race Sterndrive
  • 25-25439
OMC Stern Drive
  • 3852565
  • 911851
Volvo Penta
  • 3852565
  • 997368
1O-Ring N/A
18-7157GLM
  • 83410
Mallory
  • 9-76542
Mercruiser Stern Drive
  • 25-29976
Mercury Marine
  • 25-29976
1O-Ring N/A
18-7159GLM
  • 83440
Mallory
  • 9-76544
Mercr iser Stern Drive
  • 25-31534
  • 25-48451
Mercury Marine
  • 25-31534
1O-Ring N/A
18-7162Chrysler/Force/US Marine
  • 25-33145
GLM
  • 82260
Johnson/Evinrude Outboard
  • 302337
Mallory
  • 9-76547
Mercruiser Stern Drive
  • 25-32424
  • 25-33145
Mercury Marine
  • 25-33145
Mercury Sport Jet
  • 25-33145
OMC Stern Drive
  • 302337
  • 302377
  • 3852044
Sears
  • 25-33145
Volvo Penta
  • 3852044
1O-Ring N/A
18-7164GLM
  • 81260
Johnson/Evinrude Outboard
  • 302537
Mercruiser Stern Drive
  • 25-33466
  • 25-67675
  • 25-846356
  • 27-898101789
Mercury Marine
  • 25-33466
  • 25-67675
  • 25-846356
1O-Ring N/A
18-7168GLM
  • 80120
Johnson/Evinrude Outboard
  • 202893
Mallory
  • 9-76550
Mercruiser Stern Drive
  • 25-21720
  • 25-26834
  • 25-48171
  • 25-801334436
Mercury Marine
  • 25-20587
  • 25-21720
  • 25-26834
  • 25-48171
  • 25-801334436
OMC Stern Drive
  • 202893
  • 3852033
Volvo Penta
  • 3852033
4O-Ring N/A
18-7174Chrysler/Force/US Marine
  • 25-45711
  • 25-F455342
GLM
  • 81140
Johnson/Evinrude Outboard
  • 326649
  • 553127
Mallory
  • 9-76553
Mercruiser Stern Drive
  • 25-45711
Mercury Marine
  • 25-45711
Mercury Sport Jet
  • 25-45711
OMC Stern Drive
  • 326649
  • 553127
  • 910582
2O-Ring N/A
18-7176Chrysler/Force/US Marine
  • 25-90011
  • 25-F74305
  • F694555
  • F74035
  • F74305-1
GLM
  • 81390
Mallory
  • 9-76554
Mercruiser Stern Drive
  • 25-896523
  • 25-90011
Mercury Marine
  • 25-896523
  • 25-90011
1O-Ring N/A
18-7406GLM
  • 80100
OMC Stern Drive
  • 3852523
  • 911311
Volvo Penta
  • 3852523
1O-Ring N/A
18-7411GLM
  • 81240
Johnson/Evinrude Outboard
  • 321921
Mercruiser Stern Drive
  • 25-35480
  • 25-8M2000816
Mercury Marine
  • 25-35480
  • 25-47386
1O-Ring N/A
18-7421GLM
  • 80070
Mercury Marine
  • 25-16524
  • 25-20415
2O-Ring N/A
18-7812GLM
  • 40360
Mallory
  • 9-37751
Mercury Marine
  • 66599A2
  • 89031A2
1Fuel Pump Kit N/A
18-2506-1Mallory
  • 9-60046
Mercury Marine
  • 27-99176
  • 27-991762
  • 27-991763
  • 27-991764
Mercury Race Outboard
  • 27-99176
1Exhaust Plate Gasket N/A
18-2508-1GLM
  • 32540
Mercury Marine
  • 27-96440
  • 27-99776
  • 27-997761
2Exhaust Plate Gasket N/A
9-76560Mercury Marine
  • 25-38099
1O-RING N/A
18-7817Chrysler/Force/US Marine
  • 21-42990A10
  • 21-42990A7
  • 21-42990A8
GLM
  • 40290
Mercury Marine
  • 21-42990A1
  • 21-42990A10
  • 21-42990A11
  • 21-42990A2
  • 21-42990A3
  • 21-42990A4
  • 21-42990A5
  • 21-42990A6
  • 21-42990A7
  • 21-42990A8
  • 21-42990A9
  • 21-857005A1
Mercury Sport Jet
  • 21-42990A11
  • 21-857005A1
1Fuel Pump Kit N/A
NSSMercury Marine
  • 27-672741
1Gasket, Choke Plate to CarburetorNo ImageN/A
Overhaul Gasket Set
Your Price:
$137.99

Overhaul Gasket Set

676-18-4359

Key Features:

  • Does not Include Head Gaskets

Interchanges/Replaces

GLM

  • 39520

Mallory

  • 9-64204

Mercury Marine

  • 27-815791A90
  • 27-815791A92
  • 27-815809A90
  • 27-815810A90

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-0135GLM
  • 32880
Mercury Marine
  • 27-78246
  • 27-782461
2Adapter Cover Gasket N/A
18-0182GLM
  • 30610
Johnson/Evinrude Outboard
  • 310058
Mallory
  • 9-60002
Mercury Marine
  • 27-62386
  • 27-62386001
Mercury Race Outboard
  • 27-62386001
2Thermostat Gasket N/A
18-0384GLM
  • 32350
Mercury Marine
  • 27-817533
  • 27-89221
  • 27-892211
  • 27-8M0027781
3Carburetor Gasket N/A
18-0641GLM
  • 37590
Mercury Marine
  • 27-828292
Mercury Sport Jet
  • 27-828292
3Carburetor Mounting Gasket N/A
18-0642GLM
  • 37560
Mallory
  • 9-60051
Mercury Marine
  • 27-19050
  • 27-190502
  • 27-190503
  • 27-190505
1Divider Plate Gasket N/A
18-0643GLM
  • 37570
Mercury Marine
  • 27-183071
  • 27-183076
1Powerhead Base Gasket N/A
18-0644GLM
  • 37530
Mercury Marine
  • 27-146972
Mercury Sport Jet
  • 27-146972
1Reed Plate Gasket N/A
18-0645GLM
  • 37540
Mallory
  • 9-60056
Mercury Marine
  • 27-167371
Mercury Sport Jet
  • 27-167371
1Adapter Plate Gasket N/A
18-0646GLM
  • 37550
Mercury Marine
  • 27-813859
  • 27-883775
Mercury Sport Jet
  • 27-813859
  • 27-881034
1Reed Plate Gasket N/A
18-0838Yamaha Outboard
  • 93210-37M25-00
1O-Ring N/A
18-0858GLM
  • 81430
Mallory
  • 9-76516
Mercruiser Stern Drive
  • 25-54029
Mercury Marine
  • 25-54029
Mercury Sport Jet
  • 25-54029
1O-Ring N/A
18-0860GLM
  • 81520
Mercruiser Stern Drive
  • 25-62700
Mercury Marine
  • 25-62700
Mercury Sport Jet
  • 25-62700
1O-Ring N/A
18-0936GLM
  • 31990
Mallory
  • 9-60057
Mercury Marine
  • 27-67624
  • 27-78690
  • 27-78690002
Mercury Sport Jet
  • 27-78690
  • 27-78690002
2Relief Valve Plate Gasket N/A
18-2509GLM
  • 31690
Mercury Marine
  • 27-67751
3Carburetor Mounting Gasket N/A
18-2511GLM
  • 32510
Mercury Marine
  • 27-67074
  • 27-88727
  • 27-99173
  • 27-99173 2
  • 27-991731
  • 27-991734
1Drive Shaft Housing to Exhaust Plate Gasket N/A
18-2513GLM
  • 30890
Mallory
  • 9-60049
  • 9-60050
Mercury Marine
  • 27-11338
  • 27-67208
Mercury Sport Jet
  • 27-11338
2Crankcase Gasket (Cyl. Block Sealing V-6) N/A
18-2914GLM
  • 31010
Mallory
  • 9-60034
Mercruiser Stern Drive
  • 27-32433
  • 27-856081
  • 27-8M0090319
Mercury Marine
  • 27-30603
  • 27-32433
  • 27-85608
  • 27-856081
  • 27-8M0090319
1Water Pump Gasket N/A
18-2915GLM
  • 31020
Mallory
  • 9-60035
Mercruiser Stern Drive
  • 27-32434
  • 27-856091
  • 27-858524
Mercury Marine
  • 27-30604
  • 27-32434
  • 27-85609
  • 27-856091
  • 27-858524
1Water Pump Gasket N/A
18-2919GLM
  • 31050
Mallory
  • 9-60031
Mercruiser Stern Drive
  • 27-426311
Mercury Marine
  • 27-42631
  • 27-426311
1Water Pump Gasket N/A
18-3110GLM
  • 12830
Mallory
  • 9-43604
Mercruiser Stern Drive
  • 26-38970
Mercury Marine
  • 26-29677
  • 26-36557A1
  • 26-38970
2Water Pump Housing Bushing N/A
18-7153GLM
  • 81180
Mallory
  • 9-76505
Mercruiser Stern Drive
  • 25-25439
Mercury Marine
  • 25-25439
Mercury Race Outboard
  • 25-25439
Mercury Race Sterndrive
  • 25-25439
OMC Stern Drive
  • 3852565
  • 911851
Volvo Penta
  • 3852565
  • 997368
1O-Ring N/A
18-7157GLM
  • 83410
Mallory
  • 9-76542
Mercruiser Stern Drive
  • 25-29976
Mercury Marine
  • 25-29976
1O-Ring N/A
18-7159GLM
  • 83440
Mallory
  • 9-76544
Mercruiser Stern Drive
  • 25-31534
  • 25-48451
Mercury Marine
  • 25-31534
1O-Ring N/A
18-7174Chrysler/Force/US Marine
  • 25-45711
  • 25-F455342
GLM
  • 81140
Johnson/Evinrude Outboard
  • 326649
  • 553127
Mallory
  • 9-76553
Mercruiser Stern Drive
  • 25-45711
Mercury Marine
  • 25-45711
Mercury Sport Jet
  • 25-45711
OMC Stern Drive
  • 326649
  • 553127
  • 910582
1O-Ring N/A
18-7176Chrysler/Force/US Marine
  • 25-90011
  • 25-F74305
  • F694555
  • F74035
  • F74305-1
GLM
  • 81390
Mallory
  • 9-76554
Mercruiser Stern Drive
  • 25-896523
  • 25-90011
Mercury Marine
  • 25-896523
  • 25-90011
1O-Ring N/A
18-8305Mercury Marine
  • 26-814754
  • 42838
  • 69668
  • 88726
Mercury Race Outboard
  • 428381
  • 69668
Mercury Sport Jet
  • 26-814754
1Divider Plate Seal N/A
18-2506-1Mallory
  • 9-60046
Mercury Marine
  • 27-99176
  • 27-991762
  • 27-991763
  • 27-991764
  • Mercury Race Outboard
    • 27-99176
    1Exhaust Plate Gasket N/A
    18-0970Chrysler/Force/US Marine
    • 27-987691
    GLM
    • 32960
    Mallory
    • 9-60054
    Mercury Marine
    • 27-98769
    • 27-987691
    Mercury Sport Jet
    • 27-987691
    1Fuel Pump Base Gasket N/A
    18-7817Chrysler/Force/US Marine
    • 21-42990A10
    • 21-42990A7
    • 21-42990A8
    GLM
    • 40290
    Mercury Marine
    • 21-42990A1
    • 21-42990A10
    • 21-42990A11
    • 21-42990A2
    • 21-42990A3
    • 21-42990A4
    • 21-42990A5
    • 21-42990A6
    • 21-42990A7
    • 21-42990A8
    • 21-42990A9
    • 21-857005A1
    Mercury Sport Jet
    • 21-42990A11
    • 21-857005A1
    1Fuel Pump Kit N/A
    Lower Unit Seal Kit
    Your Price:
    $59.99

    Lower Unit Seal Kit

    676-18-2655

    Additional Details:

    • Fits: Mercury/Mariner 135/150 V-6 (0A904646 & Newer) and 175/200 V-6 (6618751 & Newer)

    Interchanges/Replaces

    GLM

    • 87540

    Mallory

    • 9-74201

    Mercury Marine

    • 26-89238A2

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-2002Chrysler/Force/US Marine
    • 26-76868
    GLM
    • 85130
    Honda Outboard
    • 91252-ZW1-003
    Johnson/Evinrude Outboard
    • 0320862
    Mallory
    • 9-76202
    Mercruiser Stern Drive
    • 26-30550
    • 26-76868
    Mercury Marine
    • 26-30550
    • 26-70019
    • 26-73838
    • 26-76868
    OMC Stern Drive
    • 320862
    2Oil Seal N/A
    18-2009GLM
    • 85050
    Mallory
    • 9-76105
    Mercruiser Stern Drive
    • 26-31249
    • 26-46021
    • 26-89236
    • 26-892361
    Mercury Marine
    • 26-25776
    • 26-31249
    • 26-89236
    1Oil Seal N/A
    18-2013GLM
    • 85040
    Mallory
    • 9-76108
    Mercruiser Stern Drive
    • 26-16977
    • 26-31507
    • 26-79884
    • 802276
    Mercury Marine
    • 26-16977
    • 26-20465
    • 26-31507
    • 26-79884
    • 802276
    1Oil Seal N/A
    18-2014Chrysler/Force/US Marine
    • 26-F694305
    GLM
    • 85070
    Mallory
    • 9-76109
    Mercruiser Stern Drive
    • 26-33144
    • 26-77634
    • 26-89238
    Mercury Marine
    • 26-33144
    • 26-77634
    • 26-89238
    1Oil Seal N/A
    18-2155GLM
    • 21020
    Mallory
    • 9-76134
    Mercury Marine
    • 23-37428A1
    • 23-55419A1
    • 23-77631A2
    1Shift Shaft Housing Bushing N/A
    18-2914GLM
    • 31010
    Mallory
    • 9-60034
    Mercruiser Stern Drive
    • 27-32433
    • 27-856081
    • 27-8M0090319
    Mercury Marine
    • 27-30603
    • 27-32433
    • 27-85608
    • 27-856081
    • 27-8M0090319
    1Water Pump Gasket N/A
    18-2915GLM
    • 31020
    Mallory
    • 9-60035
    Mercruiser Stern Drive
    • 27-32434
    • 27-856091
    • 27-858524
    Mercury Marine
    • 27-30604
    • 27-32434
    • 27-85609
    • 27-856091
    • 27-858524
    1Water Pump Gasket N/A
    18-2919GLM
    • 31050
    Mallory
    • 9-60031
    Mercruiser Stern Drive
    • 27-426311
    Mercury Marine
    • 27-42631
    • 27-426311
    1Water Pump Gasket N/A
    18-2945Chrysler/Force/US Marine
    • 12-19183
    • F50556
    • F8077
    • F8186
    Johnson/Evinrude Outboard
    • 307552
    Mallory
    • 9-60101
    • 9-60102
    Mercruiser Stern Drive
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-19183B
    • 12-20260
    • 12-20260B
    Mercury Marine
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-20260
    2Drain Screw Gasket N/A
    18-3110GLM
    • 12830
    Mallory
    • 9-43604
    Mercruiser Stern Drive
    • 26-38970
    Mercury Marine
    • 26-29677
    • 26-36557A1
    • 26-38970
    1Water Pump Housing Bushing N/A
    18-7153GLM
    • 81180
    Mallory
    • 9-76505
    Mercruiser Stern Drive
    • 25-25439
    Mercury Marine
    • 25-25439
    Mercury Race Outboard
    • 25-25439
    Mercury Race Sterndrive
    • 25-25439
    OMC Stern Drive
    • 3852565
    • 911851
    Volvo Penta
    • 3852565
    • 997368
    1O-Ring N/A
    18-7157GLM
    • 83410
    Mallory
    • 9-76542
    Mercruiser Stern Drive
    • 25-29976
    Mercury Marine
    • 25-29976
    1O-Ring N/A
    18-7159GLM
    • 83440
    Mallory
    • 9-76544
    Mercruiser Stern Drive
    • 25-31534
    • 25-48451
    Mercury Marine
    • 25-31534
    1O-Ring N/A
    18-7176Chrysler/Force/US Marine
    • 25-90011
    • 25-F74305
    • F694555
    • F74035
    • F74305-1
    GLM
    • 81390
    Mallory
    • 9-76554
    Mercruiser Stern Drive
    • 25-896523
    • 25-90011
    Mercury Marine
    • 25-896523
    • 25-90011
    1O-Ring N/A
    18-7426GLM
    • 21330
    Mallory
    • 9-76562
    Mercruiser Stern Drive
    • 25-30271
    Mercury Marine
    • 25-30271
    Mercury Sport Jet
    • 25-30271
    1O-Ring N/A
    18-2316GLM
    • 30030
    Mercruiser Stern Drive
    • 12-77674
    Mercury Marine
    • 12-77674
    1Washer N/A
    NSSMercury Marine
    • 37641
    • 37641001
    1Exhaust SealNo ImageN/A
    Lower Unit Seal Kit
    Your Price:
    $88.99

    Lower Unit Seal Kit

    676-18-2653

    Interchanges/Replaces

    GLM

    • 87520

    Mallory

    • 9-74203

    Mercury Marine

    • 26-55682A1

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-2002Chrysler/Force/US Marine
    • 26-76868
    GLM
    • 85130
    Honda Outboard
    • 91252-ZW1-003
    Johnson/Evinrude Outboard
    • 0320862
    Mallory
    • 9-76202
    Mercruiser Stern Drive
    • 26-30550
    • 26-76868
    Mercury Marine
    • 26-30550
    • 26-70019
    • 26-73838
    • 26-76868
    OMC Stern Drive
    • 320862
    2Oil Seal N/A
    18-2007GLM
    • 85600
    Mallory
    • 9-76103
    Mercruiser Stern Drive
    • 26-31489
    Mercury Marine
    • 26-30727
    • 26-31489
    • 26-94038
    Mercury Sport Jet
    • 26-94038
    1Oil Seal N/A
    18-2009GLM
    • 85050
    Mallory
    • 9-76105
    Mercruiser Stern Drive
    • 26-31249
    • 26-46021
    • 26-89236
    • 26-892361
    Mercury Marine
    • 26-25776
    • 26-31249
    • 26-89236
    1Oil Seal N/A
    18-2013GLM
    • 85040
    Mallory
    • 9-76108
    Mercruiser Stern Drive
    • 26-16977
    • 26-31507
    • 26-79884
    • 802276
    Mercury Marine
    • 26-16977
    • 26-20465
    • 26-31507
    • 26-79884
    • 802276
    1Oil Seal N/A
    18-2014Chrysler/Force/US Marine
    • 26-F694305
    GLM
    • 85070
    Mallory
    • 9-76109
    Mercruiser Stern Drive
    • 26-33144
    • 26-77634
    • 26-89238
    Mercury Marine
    • 26-33144
    • 26-77634
    • 26-89238
    1Oil Seal N/A
    18-2048GLM
    • 85680
    Mallory
    • 9-76110
    Mercury Marine
    • 26-24590
    1Oil Seal N/A
    18-2050Mallory
    • 9-76112
    Mercury Marine
    • 26-55682
    1Oil Seal N/A
    18-2053Chrysler/Force/US Marine
    • 26-70081
    GLM
    • 85530
    Honda Outboard
    • 91255-ZW1-003
    Mallory
    • 9-76115
    Mercury Marine
    • 26-70081
    1Oil Seal N/A
    18-2801GLM
    • 31030
    Mallory
    • 9-60028
    Mercruiser Stern Drive
    • 27-32438
    Mercury Marine
    • 27-32438
    1Water Pump Gasket N/A
    18-2826GLM
    • 31040
    Mallory
    • 9-60036
    Mercruiser Stern Drive
    • 27-33146
    • 27-856704
    Mercury Marine
    • 27-33146
    • 27-85610
    • 27-856101
    1Water Pump Base Gasket N/A
    18-2914GLM
    • 31010
    Mallory
    • 9-60034
    Mercruiser Stern Drive
    • 27-32433
    • 27-856081
    • 27-8M0090319
    Mercury Marine
    • 27-30603
    • 27-32433
    • 27-85608
    • 27-856081
    • 27-8M0090319
    1Water Pump Gasket N/A
    18-2915GLM
    • 31020
    Mallory
    • 9-60035
    Mercruiser Stern Drive
    • 27-32434
    • 27-856091
    • 27-858524
    Mercury Marine
    • 27-30604
    • 27-32434
    • 27-85609
    • 27-856091
    • 27-858524
    1Water Pump Gasket N/A
    18-2945Chrysler/Force/US Marine
    • 12-19183
    • F50556
    • F8077
    • F8186
    Johnson/Evinrude Outboard
    • 307552
    Mallory
    • 9-60101
    • 9-60102
    Mercruiser Stern Drive
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-19183B
    • 12-20260
    • 12-20260B
    Mercury Marine
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-20260
    2Drain Screw Gasket N/A
    18-2948GLM
    • 31180
    Mallory
    • 9-43629
    Mercruiser Stern Drive
    • 12-49221
    Mercury Marine
    • 12-49221
    • 12-492211
    • 27-23245
    Mercury Sport Jet
    • 12-49221
    1Rubber Washer N/A
    18-3110GLM
    • 12830
    Mallory
    • 9-43604
    Mercruiser Stern Drive
    • 26-38970
    Mercury Marine
    • 26-29677
    • 26-36557A1
    • 26-38970
    1Water Pump Housing Bushing N/A
    18-7153GLM
    • 81180
    Mallory
    • 9-76505
    Mercruiser Stern Drive
    • 25-25439
    Mercury Marine
    • 25-25439
    Mercury Race Outboard
    • 25-25439
    Mercury Race Sterndrive
    • 25-25439
    OMC Stern Drive
    • 3852565
    • 911851
    Volvo Penta
    • 3852565
    • 997368
    1O-Ring N/A
    18-7157GLM
    • 83410
    Mallory
    • 9-76542
    Mercruiser Stern Drive
    • 25-29976
    Mercury Marine
    • 25-29976
    1O-Ring N/A
    18-7158GLM
    • 81160
    Johnson/Evinrude Outboard
    • 309731
    • 310585
    Mallory
    • 9-76543
    Mercruiser Stern Drive
    • 25-30613
    • 25-846357
    Mercury Marine
    • 25-30613
    • 25-846357
    OMC Stern Drive
    • 310585
    • 310967
    1O-Ring N/A
    18-7159GLM
    • 83440
    Mallory
    • 9-76544
    Mercruiser Stern Drive
    • 25-31534
    • 25-48451
    Mercury Marine
    • 25-31534
    1O-Ring N/A
    18-7161GLM
    • 80420
    Mallory
    • 9-76546
    Mercruiser Stern Drive
    • 25-32546
    Mercury Marine
    • 25-32546
    1O-Ring N/A
    18-7162Chrysler/Force/US Marine
    • 25-33145
    GLM
    • 82260
    Johnson/Evinrude Outboard
    • 302337
    Mallory
    • 9-76547
    Mercruiser Stern Drive
    • 25-32424
    • 25-33145
    Mercury Marine
    • 25-33145
    Mercury Sport Jet
    • 25-33145
    OMC Stern Drive
    • 302337
    • 302377
    • 3852044
    Sears
    • 25-33145
    Volvo Penta
    • 3852044
    1O-Ring N/A
    18-7173Chrysler/Force/US Marine
    • 25-30224
    GLM
    • 82250
    Johnson/Evinrude Outboard
    • 310327
    Mallory
    • 9-76501
    Mercruiser Stern Drive
    • 25-30224
    • 25-30224Q
    Mercury Marine
    • 25-27018
    • 25-30224
    • 25-30224Q
    OMC Stern Drive
    • 310327
    1O-Ring N/A
    18-7426GLM
    • 21330
    Mallory
    • 9-76562
    Mercruiser Stern Drive
    • 25-30271
    Mercury Marine
    • 25-30271
    Mercury Sport Jet
    • 25-30271
    1O-Ring N/A
    18 2316GLM
    • 30030
    Mercruiser Stern Drive
    • 12-77674
    Mercury Marine
    • 12-77674
    1Washer < href="/images/product/large/18-2316.JPG" data-title="18-2316 Washer">N/A
    18-2340GLM
    • 30010
    Mercruiser Stern Drive
    • 12-31266
    Mercury Marine
    • 12-31266
    1Shift Shaft Washer N/A
    NSSMercury Marine
    • 37641
    • 37641001
    1Exhaust SealNo ImageN/A
    Lower Unit Seal Kit
    Your Price:
    $48.99

    Lower Unit Seal Kit

    676-18-2646-1

    Additional Details:

    • For: Alpha One Gen II

    Interchanges/Replaces

    GLM

    • 87511

    Mallory

    • 9-74206

    Mercruiser Stern Drive

    • 26-816575A1
    • 26-816575A3

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-2002Chrysler/Force/US Marine
    • 26-76868
    GLM
    • 85130
    Honda Outboard
    • 91252-ZW1-003
    Johnson/Evinrude Outboard
    • 0320862
    Mallory
    • 9-76202
    Mercruiser Stern Drive
    • 26-30550
    • 26-76868
    Mercury Marine
    • 26-30550
    • 26-70019
    • 26-73838
    • 26-76868
    OMC Stern Drive
    • 320862
    1Oil Seal N/A
    18-2013GLM
    • 85040
    Mallory
    • 9-76108
    Mercruiser Stern Drive
    • 26-16977
    • 26-31507
    • 26-79884
    • 802276
    Mercury Marine
    • 26-16977
    • 26-20465
    • 26-31507
    • 26-79884
    • 802276
    1Oil Seal N/A
    18-2014Chrysler/Force/US Marine
    • 26-F694305
    GLM
    • 85070
    Mallory
    • 9-76109
    Mercruiser Stern Drive
    • 26-33144
    • 26-77634
    • 26-89238
    Mercury Marine
    • 26-33144
    • 26-77634
    • 26-89238
    1Oil Seal N/A
    18-2076Chrysler/Force/US Marine
    • 26-12224
    • 26-F697118
    GLM
    • 85700
    Mallory
    • 9-76101
    Mercruiser Stern Drive
    • 26-12224
    Mercury Marine
    • 26-12224
    1Oil Seal N/A
    18-2077Chrysler/Force/US Marine
    • 26-F697555
    GLM
    • 85130
    Mallory
    • 9-76119
    Mercruiser Stern Drive
    • 26-14077
    Mercury Marine
    • 26-14077
    1Oil Seal N/A
    18-2564Chrysler/Force/US Marine
    • 27-430331
    GLM
    • 30090
    Honda Outboard
    • 19234-ZW1-003
    Mallory
    • 9-60020
    Mercruiser Stern Drive
    • 27-430331
    Mercury Marine
    • 27-43033
    • 27-430331
    1Impeller Gasket N/A
    18-2566Chrysler/Force/US Marine
    • 27-817277
    GLM
    • 30290
    Mallory
    • 9-60023
    Mercruiser Stern Drive
    • 27-817277
    • 27-8172771
    Mercury Marine
    • 27-817277
    • 27-8172771
    1Impeller Gasket N/A
    18-2599GLM
    • 85590
    Mallory
    • 9-43628
    Mercruiser Stern Drive
    • 26-816575A2
    Mercury Marine
    • 26-816575A2
    1Face Seal and Tool N/A
    18-2944GLM
    • 85140
    Mallory
    • 9-76512
    Mercruiser Stern Drive
    • 26-45577
    • 26-455771
    • 26-45577B
    • 26-45577B1
    1Seal Ring Gasket N/A
    18-2945Chrysler/Force/US Marine
    • 12-19183
    • F50556
    • F8077
    • F8186
    Johnson/Evinrude Outboard
    • 307552
    Mallory
    • 9-60101
    • 9-60102
    Mercruiser Stern Drive
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-19183B
    • 12-20260
    • 12-20260B
    Mercury Marine
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-20260
    1Drain Screw Gasket N/A
    18-7159GLM
    • 83440
    Mallory
    • 9-76544
    Mercruiser Stern Drive
    • 25-31534
    • 25-48451
    Mercury Marine
    • 25-31534
    1O-Ring N/A
    18-7168GLM
    • 80120
    Johnson/Evinrude Outboard
    • 202893
    Mallory
    • 9-76550
    Mercruiser Stern Drive
    • 25-21720
    • 25-26834
    • 25-48171
    • 25-801334436
    Mercury Marine
    • 25-20587
    • 25-21720
    • 25-26834
    • 25-48171
    • 25-801334436
    OMC Stern Drive
    • 202893
    • 3852033
    Volvo Penta
    • 3852033
    2O-Ring N/A
    18-7176Chrysler/Force/US Marine
    • 25-90011
    • 25-F74305
    • F694555
    • F74035
    • F74305-1
    GLM
    • 81390
    Mallory
    • 9-76554
    Mercruiser Stern Drive
    • 25-896523
    • 25-90011
    Mercury Marine
    • 25-896523
    • 25-90011
    1O-Ring N/A
    18-7413Chrysler/Force/US Marine
    • 25-62702
    • 25-F50342-1
    • F17510
    • F50342
    GLM
    • 80110
    Johnson/Evinrude Outboard
    • 303191
    Mercruiser Stern Drive
    • 25-62702
    • 25-627021
    Mercury Marine
    • 25-22175
    • 25-62702
    Mercury Sport Jet
    • 25-62702
    OMC Stern Drive
    • 303191
    2O-Ring N/A
    18-7420GLM
    • 82110
    Mallory
    • 9-76565
    Mercruiser Stern Drive
    • 25-21836
    Mercury Marine
    • 25-21836
    Mercury Race Outboard
    • 25-21836
    Mercury Race Sterndrive
    • 25-21836
    Mercury Sport Jet
    • 25-21836
    2O-Ring N/A
    18-7440-1GLM
    • 81170
    Johnson/Evinrude Outboard
    • 301967
    Mallory
    • 9-76574
    Mercruiser Stern Drive
    • 25-36318
    Mercury Marine
    • 25-36318
    2O-Ring N/A
    18-2009GLM
    • 85050
    Mallory
    • 9-76105
    Mercruiser Stern Drive
    • 26-31249
    • 26-46021
    • 26-89236
    • 26-892361
    Mercury Marine
    • 26-25776
    • 26-31249
    • 26-89236
    1Oil Seal N/A
    18-2430Mallory
    • 9-60105
    Mercruiser Stern Drive
    • 26-830749
    Mercury Marine
    • 26-830749
    1Drain Screw Gasket N/A
    18-2056Chrysler/Force/US Marine
    • 26-66302
    GLM
    • 85060
    Mallory
    • 9-76130
    Mercruiser Stern Drive
    • 26-37259
    • 26-89237
    • 26-96503
    • 26-965031
    Mercury Marine
    • 26-56394
    • 26-66302
    2Oil Seal
    Lower Unit Seal Kit
    Your Price:
    $33.99

    Lower Unit Seal Kit

    676-18-8382

    Additional Details:

    • For: 225Hp EFI/250Hp EFI (G129222 & Up), 200Hp (T801000 & Up), 200Hp Optimax DFI (G386496 & Up)
    • For: 225Hp Optimax DFI (G590000-G960499), 225Hp (D280813-G437999), Models w/ "C-3 Casting"

    Interchanges/Replaces

    Mallory

    • 9-74208

    Mercury Marine

    • 26-816575A4

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-8347Chrysler/Force/US Marine
    • 26-816464-1
    Mercruiser Stern Drive
    • 26-8164641
    Mercury Marine
    • 76384
    • 816464
    • 8164641
    1Shift Shaft Seal N/A
    18-2056Chrysler/Force/US Marine
    • 26-66302
    GLM
    • 85060
    Mallory
    • 9-76130
    Mercruiser Stern Drive
    • 26-37259
    • 26-89237
    • 26-96503
    • 26-965031
    Mercury Marine
    • 26-56394
    • 26-66302
    2Oil Seal N/A
    18-2564Chrysler/Force/US Marine
    • 27-430331
    GLM
    • 30090
    Honda Outboard
    • 19234-ZW1-003
    Mallory
    • 9-60020
    Mercruiser Stern Drive
    • 27-430331
    Mercury Marine
    • 27-43033
    • 27-430331
    1Impeller Gasket N/A
    18-2566Chrysler/Force/US Marine
    • 27-817277
    GLM
    • 30290
    Mallory
    • 9-60023
    Mercruiser Stern Drive
    • 27-817277
    • 27-8172771
    Mercury Marine
    • 27-817277
    • 27-8172771
    1Impeller Gasket N/A
    18-7420GLM
    • 82110
    Mallory
    • 9-76565
    Mercruiser Stern Drive
    • 25-21836
    Mercury Marine
    • 25-21836
    Mercury Race Outboard
    • 25-21836
    Mercury Race Sterndrive
    • 25-21836
    Mercury Sport Jet
    • 25-21836
    1O-Ring N/A
    18-7159GLM
    • 83440
    Mallory
    • 9-76544
    Mercruiser Stern Drive
    • 25-31534
    • 25-48451
    Mercury Marine
    • 25-31534
    1O-Ring N/A
    18-2077Chrysler/Force/US Marine
    • 26-F697555
    GLM
    • 85130
    Mallory
    • 9-76119
    Mercruiser Stern Drive
    • 26-14077
    Mercury Marine
    • 26-14077
    1Oil Seal N/A
    18-2002Chrysler/Force/US Marine
    • 26-76868
    GLM
    • 85130
    Honda Outboard
    • 91252-ZW1-003
    Johnson/Evinrude Outboard
    • 0320862
    Mallory
    • 9-76202
    Mercruiser Stern Drive
    • 26-30550
    • 26-76868
    Mercury Marine
    • 26-30550
    • 26-70019
    • 26-73838
    • 26-76868
    OMC Stern Drive
    • 320862
    1Oil Seal N/A
    18-0649Mercury Marine
    • 27-858935
    1Shift Housing Gasket N/A
    18-7117GLM
    • 82150
    Johnson/Evinrude Outboard
    • 303360
    Mallory
    • 9-76507
    Mercruiser Stern Drive
    • 25-35027
    Mercury Marine
    • 25-35027
    1O-Ring N/A
    18-7440-1GLM
    • 81170
    Johnson/Evinrude Outboard
    • 301967
    Mallory
    • 9-76574
    Mercruiser Stern Drive
    • 25-36318
    Mercury Marine
    • 25-36318
    2O-Ring N/A
    18-2945Chrysler/Force/US Marine
    • 12-19183
    • F50556
    • F8077
    • F8186
    Johnson/Evinrude Outboard
    • 307552
    Mallory
    • 9-60101
    • 9-60102
    Mercruiser Stern Drive
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-19183B
    • 12-20260
    • 12-20260B
    Mercury Marine
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-20260
    2Drain Screw Gasket N/A
    18-7176Chrysler/Force/US Marine
    • 25-90011
    • 25-F74305
    • F694555
    • F74035
    • F74305-1
    GLM
    • 81390
    Mallory
    • 9-76554
    Mercruiser Stern Drive
    • 25-896523
    • 25-90011
    Mercury Marine
    • 25-896523
    • 25-90011
    1O-Ring N/A
    18-2599GLM
    • 85590
    Mallory
    • 9-43628
    Mercruiser Stern Drive
    • 26-816575A2
    Mercury Marine
    • 26-816575A2
    1Face Seal and Tool N/A
    Lower Unit Seal Kit
    Your Price:
    $39.99

    Lower Unit Seal Kit

    676-18-2642

    Interchanges/Replaces

    GLM

    • 87513

    Mallory

    • 9-74209

    Mercury Marine

    • 26-816575A5

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-2013GLM
    • 85040
    Mallory
    • 9-76108
    Mercruiser Stern Drive
    • 26-16977
    • 26-31507
    • 26-79884
    • 802276
    Mercury Marine
    • 26-16977
    • 26-20465
    • 26-31507
    • 26-79884
    • 802276
    1Oil Seal N/A
    18-2014Chrysler/Force/US Marine
    • 26-F694305
    GLM
    • 85070
    Mallory
    • 9-76109
    Mercruiser Stern Drive
    • 26-33144
    • 26-77634
    • 26-89238
    Mercury Marine
    • 26-33144
    • 26-77634
    • 26-89238
    1Oil Seal N/A
    18-2563GLM
    • 30290
    Honda Outboard
    • 19232-ZW1-003
    Mallory
    • 9-60021
    Mercury Marine
    • 27-43034
    • 27-430341
    1Impeller Gasket N/A
    18-2564Chrysler/Force/US Marine
    • 27-430331
    GLM
    • 30090
    Honda Outboard
    • 19234-ZW1-003
    Mallory
    • 9-60020
    Mercruiser Stern Drive
    • 27-430331
    Mercury Marine
    • 27-43033
    • 27-430331
    1Impeller Gasket N/A
    18-2599GLM
    • 85590
    Mallory
    • 9-43628
    Mercruiser Stern Drive
    • 26-816575A2
    Mercury Marine
    • 26-816575A2
    1Face Seal and Tool N/A
    18-2945Chrysler/Force/US Marine
    • 12-19183
    • F50556
    • F8077
    • F8186
    Johnson/Evinrude Outboard
    • 307552
    Mallory
    • 9-60101
    • 9-60102
    Mercruiser Stern Drive
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-19183B
    • 12-20260
    • 12-20260B
    Mercury Marine
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-20260
    2Drain Screw Gasket N/A
    18-7159GLM
    • 83440
    Mallory
    • 9-76544
    Mercruiser Stern Drive
    • 25-31534
    • 25-48451
    Mercury Marine
    • 25-31534
    1O-Ring N/A
    18-7176Chrysler/Force/US Marine
    • 25-90011
    • 25-F74305
    • F694555
    • F74035
    • F74305-1
    GLM
    • 81390
    Mallory
    • 9-76554
    Mercruiser Stern Drive
    • 25-896523
    • 25-90011
    Mercury Marine
    • 25-896523
    • 25-90011
    1O-Ring N/A
    18-7420GLM
    • 82110
    Mallory
    • 9-76565
    Mercruiser Stern Drive
    • 25-21836
    Mercury Marine
    • 25-21836
    Mercury Race Outboard
    • 25-21836
    Mercury Race Sterndrive
    • 25-21836
    Mercury Sport Jet
    • 25-21836
    2O-Ring N/A
    18-7440-1GLM
    • 81170
    Johnson/Evinrude Outboard
    • 301967
    Mallory
    • 9-76574
    Mercruiser Stern Drive
    • 25-36318
    Mercury Marine
    • 25-36318
    2O-Ring N/A
    18-2054Chrysler/Force/US Marine
    • 26-816464 1
    GLM
    • 85581
    Honda Outboard
    • 91253-ZW1-003
    Mallory
    • 9-76116
    Mercruiser Stern Drive
    • 26-8164641
    Mercury Marine
    • 26-76384
    • 26-816464
    • 26-8164641
    1Oil Seal N/A
    18-2002Chrysler/Force/US Marine
    • 26-76868
    GLM
    • 85130
    Honda Outboard
    • 91252-ZW1-003
    Johnson/Evinrude Outboard
    • 0320862
    Mallory
    • 9-76202
    Mercruiser Stern Drive
    • 26-30550
    • 26-76868
    Mercury Marine
    • 26-30550
    • 26-70019
    • 26-73838
    • 26-76868
    OMC Stern Drive
    • 320862
    1Oil Seal N/A
    18-2077Chrysler/Force/US Marine
    • 26-F697555
    GLM
    • 85130
    Mallory
    • 9-76119
    Mercruiser Stern Drive
    • 26-14077
    Mercury Marine
    • 26-14077
    1Oil Seal N/A
    Lower Unit Seal Kit
    Your Price:
    $53.99

    Lower Unit Seal Kit

    676-18-2652

    Additional Details:

    • For: IA/IB/IC & EZ Shift, MC-I, R, MR, Alpha One & SS

    Interchanges/Replaces

    GLM

    • 87510

    Mallory

    • 9-74304

    Mercruiser Stern Drive

    • 26-33144A1
    • 26-33144A2
    • 26-89238A1

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-2002Chrysler/Force/US Marine
    • 26-76868
    GLM
    • 85130
    Honda Outboard
    • 91252-ZW1-003
    Johnson/Evinrude Outboard
    • 0320862
    Mallory
    • 9-76202
    Mercruiser Stern Drive
    • 26-30550
    • 26-76868
    Mercury Marine
    • 26-30550
    • 26-70019
    • 26-73838
    • 26-76868
    OMC Stern Drive
    • 320862
    1Oil Seal N/A
    18-2013GLM
    • 85040
    Mallory
    • 9-76108
    Mercruiser Stern Drive
    • 26-16977
    • 26-31507
    • 26-79884
    • 802276
    Mercury Marine
    • 26-16977
    • 26-20465
    • 26-31507
    • 26-79884
    • 802276
    2Oil Seal N/A
    18-2014Chrysler/Force/US Marine
    • 26-F694305
    GLM
    • 85070
    Mallory
    • 9-76109
    Mercruiser Stern Drive
    • 26-33144
    • 26-77634
    • 26-89238
    Mercury Marine
    • 26-33144
    • 26-77634
    • 26-89238
    1Oil Seal N/A
    18-2076Chrysler/Force/US Marine
    • 26-12224
    • 26-F697118
    GLM
    • 85700
    Mallory
    • 9-76101
    Mercruiser Stern Drive
    • 26-12224
    Mercury Marine
    • 26-12224
    1Oil Seal N/A
    18-2154GLM
    • 21010
    Mallory
    • 9-76133
    Mercruiser Stern Drive
    • 23-30617A1
    • 23-30617A2
    • 23-8M0112749
    Mercury Marine
    • 23-30617A1
    1Shift Shaft Housing Bushing N/A
    18-2826GLM
    • 31040
    Mallory
    • 9-60036
    Mercruiser Stern Drive
    • 27-33146
    • 27-856704
    Mercury Marine
    • 27-33146
    • 27-85610
    • 27-856101
    1Water Pump Base Gasket N/A
    18-2914GLM
    • 31010
    Mallory
    • 9-60034
    Mercruiser Stern Drive
    • 27-32433
    • 27-856081
    • 27-8M0090319
    Mercury Marine
    • 27-30603
    • 27-32433
    • 27-85608
    • 27-856081
    • 27-8M0090319
    1Water Pump Gasket N/A
    18-2915GLM
    • 31020
    Mallory
    • 9-60035
    Mercruiser Stern Drive
    • 27-32434
    • 27-856091
    • 27-858524
    Mercury Marine
    • 27-30604
    • 27-32434
    • 27-85609
    • 27-856091
    • 27-858524
    1Water Pump Gasket N/A
    18-2919GLM
    • 31050
    Mallory
    • 9-60031
    Mercruiser Stern Drive
    • 27-426311
    Mercury Marine
    • 27-42631
    • 27-426311
    1Water Pump Gasket N/A
    18-2944GLM
    • 85140
    Mallory
    • 9-76512
    Mercruiser Stern Drive
    • 26-45577
    • 26-455771
    • 26-45577B
    • 26-45577B1
    1Seal Ring Gasket N/A
    18-2945Chrysler/Force/US Marine
    • 12-19183
    • F50556
    • F8077
    • F8186
    Johnson/Evinrude Outboard
    • 307552
    Mallory
    • 9-60101
    • 9-60102
    Mercruiser Stern Drive
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-19183B
    • 12-20260
    • 12-20260B
    Mercury Marine
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-20260
    2Drain Screw Gasket N/A
    18-2948GLM
    • 31180
    Mallory
    • 9-43629
    Mercruiser Stern Drive
    • 12-49221
    Mercury Marine
    • 12-49221
    • 12-492211
    • 27-23245
    Mercury Sport Jet
    • 12-49221
    1Rubber Washer N/A
    18-7158GLM
    • 81160
    Johnson/Evinrude Outboard
    • 309731
    • 310585
    Mallory
    • 9-76543
    Mercruiser Stern Drive
    • 25-30613
    • 25-846357
    Mercury Marine
    • 25-30613
    • 25-846357
    OMC Stern Drive
    • 310585
    • 310967
    1O-Ring N/A
    18-7159GLM
    • 83440
    Mallory
    • 9-76544
    Mercruiser Stern Drive
    • 25-31534
    • 25-48451
    Mercury Marine
    • 25-31534
    1O-Ring N/A
    18-7162Chrysler/Force/US Marine
    • 25-33145
    GLM
    • 82260
    Johnson/Evinrude Outboard
    • 302337
    Mallory
    • 9-76547
    Mercruiser Stern Drive
    • 25-32424
    • 25-33145
    Mercury Marine
    • 25-33145
    Mercury Sport Jet
    • 25-33145
    OMC Stern Drive
    • 302337
    • 302377
    • 3852044
    Sears
    • 25-33145
    Volvo Penta
    • 3852044
    1O-Ring N/A
    18-7176Chrysler/Force/US Marine
    • 25-90011
    • 25-F74305
    • F694555
    • F74035
    • F74305-1
    GLM
    • 81390
    Mallory
    • 9-76554
    Mercruiser Stern Drive
    • 25-896523
    • 25-90011
    Mercury Marine
    • 25-896523
    • 25-90011
    1O-Ring N/A
    18-7426GLM
    • 21330
    Mallory
    • 9-76562
    Mercruiser Stern Drive
    • 25-30271
    Mercury Marine
    • 25-30271
    Mercury Sport Jet
    • 25-30271
    1O-Ring N/A
    18-2340GLM
    • 30010
    Mercruiser Stern Drive
    • 12-31266
    Mercury Marine
    • 12-31266
    1Shift Shaft Washer N/A
    NSSMercruiser Stern Drive
    • 27-29586
    1Gasket, Gear Housing Flushing ScrewNo ImageN/A
    18-7153GLM
    • 81180
    Mallory
    • 9-76505
    Mercruiser Stern Drive
    • 25-25439
    Mercury Marine
    • 25-25439
    Mercury Race Outboard
    • 25-25439
    Mercury Race Sterndrive
    • 25-25439
    OMC Stern Drive
    • 3852565
    • 911851
    Volvo Penta
    • 3852565
    • 997368
    1O-Ring N/A
    18-2009GLM
    • 85050
    Mallory
    • 9-76105
    Mercruiser Stern Drive
    • 26-31249
    • 26-46021
    • 26-89236
    • 26-892361
    Mercury Marine
    • 26-25776
    • 26-31249
    • 26-89236
    1Oil Seal N/A
    Lower Gear Housing
    Your Price:
    $1,045.99

    Lower Gear Housing

    676-18-2401

    Key Features:

    • Includes tapered roller bearing for non-tractor 14/28 or 17/28 gears

    Additional Details:

    • Bore Size: 3.2635-3.2650
    • For: MR/Alpha style

    Interchanges/Replaces

    GLM

    • 18000

    Mallory

    • 9-79127

    Mercruiser Stern Drive

    • 1623-8951A15
    • 1623-8951A27
    • 1623-8951A37
    • 1623-8951A5

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-2244Chrysler/Force/US Marine
    • 10-79953
    • 10-79953A2
    • 10-F50109
    • F40109
    GLM
    • 22420
    Mallory
    • 9-72650
    Mercruiser Stern Drive
    • 10-28634
    • 10-28634A1
    • 10-79953
    • 10-79953A2
    • 10-79953Q04
    • 10-79953Q2
    • 816610A1
    • 816610A2
    Mercury Marine
    • 10-20259
    • 10-28634
    • 10-28634A1
    • 10-79953
    • 10-79953A2
    • 10-79953Q04
    • 10-79953Q2
    1Drain Screw N/A
    18-7176Chrysler/Force/US Marine
    • 25-90011
    • 25-F74305
    • F694555
    • F74035
    • F74305-1
    GLM
    • 81390
    Mallory
    • 9-76554
    Mercruiser Stern Drive
    • 25-896523
    • 25-90011
    Mercury Marine
    • 25-896523
    • 25-90011
    1O-Ring N/A
    18-6093GLM
    • 12702
    Mercruiser Stern Drive
    • 806105A1
    • 97-806105
    • 97-806105Q1
    • 97-806105T1
    1Anode N/A
    18-2914GLM
    • 31010
    Mallory
    • 9-60034
    Mercruiser Stern Drive
    • 27-32433
    • 27-856081
    • 27-8M0090319
    Mercury Marine
    • 27-30603
    • 27-32433
    • 27-85608
    • 27-856081
    • 27-8M0090319
    1Water Pump Gasket N/A
    18-1143GLM
    • 21580
    Mallory
    • 9-75107
    Mercruiser Stern Drive
    • 31-36387A1
    Mercury Marine
    • 31-36387A1
    1Tapered Roller Bearing N/A
    18-2376Mallory
    • 9-72602
    Mercruiser Stern Drive
    • 73020A20
    • 818763A10
    • 818763A4
    1Carrier Bearing N/A
    18-2285GLM
    • 23220
    Mercruiser Stern Drive
    • 15-35931A1
    • 15-47397A1
    Mercury Marine
    • 15-47397A1
    1Shim Set N/A
    18-7159GLM
    • 83440
    Mallory
    • 9-76544
    Mercruiser Stern Drive
    • 25-31534
    • 25-48451
    Mercury Marine
    • 25-31534
    1O-Ring N/A
    18-1117Chrysler/Force/US Marine
    • 31-42647A1
    • 31-F694057
    GLM
    • 21610
    Johnson/Evinrude Outboard
    • 387817
    • 5007751
    Mallory
    • 9-75121
    Mercruiser Stern Drive
    • 31-42647
    • 31-42647A1
    Mercury Marine
    • 31-42647A1
    OMC Stern Drive
    • 387817
    1Pinion Bearing N/A
    18-3199GLM
    • 21870
    Mallory
    • 9-78115
    Mercruiser Stern Drive
    • 93423
    • 934231
    • 934233
    1Water Pickup N/A
    18-3198GLM
    • 21880
    Mallory
    • 9-78114
    Mercruiser Stern Drive
    • 93424
    • 934241
    • 934243
    1Water Pickup N/A
    18-3197GLM
    • 12822
    Mallory
    • 9-78130
    Mercruiser Stern Drive
    • 10-67373
    • 10-76156
    Mercury Marine
    • 10-76156
    1Water Pick-Up Insert Screw N/A
    18-2915GLM
    • 31020
    Mallory
    • 9-60035
    Mercruiser Stern Drive
    • 27-32434
    • 27-856091
    • 27-858524
    Mercury Marine
    • 27-30604
    • 27-32434
    • 27-85609
    • 27-856091
    • 27-858524
    1Water Pump Gasket N/A
    18-2919GLM
    • 31050
    Mallory
    • 9-60031
    Mercruiser Stern Drive
    • 27-426311
    Mercury Marine
    • 27-42631
    • 27-426311
    1Water Pump Gasket N/A
    18-6011Honda Outboard
    • 41107-ZW1-003ZA
    Mercruiser Stern Drive
    • 31640
    • 316404
    • 31640A1
    • 97-31640Q4
    Mercury Marine
    • 31640
    • 316403
    • 316404
    • 31640A1
    • 31640A2
    • 31640A4
    • 31640B4
    • 72436A1
    • 97-31640Q4
    1Anode N/A
    18-2945Chrysler/Force/US Marine
    • 12-19183
    • F50556
    • F8077
    • F8186
    Johnson/Evinrude Outboard
    • 307552
    Mallory
    • 9-60101
    • 9-60102
    Mercruiser Stern Drive
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-19183B
    • 12-20260
    • 12-20260B
    Mercury Marine
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-20260
    1Drain Screw Gasket N/A
    18-6245GLM
    • 21740
    Mercruiser Stern Drive
    • 10-32470
    Mercury Marine
    • 10-32470
    • 10-47580
    • 10-74728
    1Anode Mounting Bolt N/A
    NSSMercruiser Stern Drive
    • 10-806290
    2Screw (#10-32 x 5/8")No ImageN/A
    NSSMercruiser Stern Drive
    • 11-45812
    • 11-859124
    1LocknutNo ImageN/A
    Complete Lower Gearcase Rebuild Kit
    Your Price:
    $152.99

    Complete Lower Gearcase Rebuild Kit

    676-18-8370

    Key Features:

    • Includes Water Pump and Complete Seal Kit

    Additional Details:

    • For:: Mercruiser R/MR/Alpha I

    List of Containing Parts

    Sierra Item # OE/Competitor # Quantity Description Image Comments
    18-2945Chrysler/Force/US Marine
    • 12-19183
    • F50556
    • F8077
    • F8186
    Johnson/Evinrude Outboard
    • 307552
    Mallory
    • 9-60101
    • 9-60102
    Mercruiser Stern Drive
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-19183B
    • 12-20260
    • 12-20260B
    Mercury Marine
    • 12-19183
    • 12-191832
    • 12-191833
    • 12-20260
    2Drain Screw Gasket N/A
    18-2340GLM
    • 30010
    Mercruiser Stern Drive
    • 12-31266
    Mercury Marine
    • 12-31266
    1Shift Shaft Washer N/A
    18-2076Chrysler/Force/US Marine
    • 26-12224
    • 26-F697118
    GLM
    • 85700
    Mallory
    • 9-76101
    Mercruiser Stern Drive
    • 26-12224
    Mercury Marine
    • 26-12224
    1Oil Seal N/A
    18-7159GLM
    • 83440
    Mallory
    • 9-76544
    Mercruiser Stern Drive
    • 25-31534
    • 25-48451
    Mercury Marine
    • 25-31534
    1O-Ring N/A
    18-2002Chrysler/Force/US Marine
    • 26-76868
    GLM
    • 85130
    Honda Outboard
    • 91252-ZW1-003
    Johnson/Evinrude Outboard
    • 0320862
    Mallory
    • 9-76202
    Mercruiser Stern Drive
    • 26-30550
    • 26-76868
    Mercury Marine
    • 26-30550
    • 26-70019
    • 26-73838
    • 26-76868
    OMC Stern Drive
    • 320862
    1Oil Seal N/A
    18-3109GLM
    • 12820
    Mallory
    • 9-43623
    Mercruiser Stern Drive
    • 23-29804
    • 23-29804T
    • 23-52928
    Mercury Marine
    • 23-29804
    • 23-29804T
    1Water Tube Guide N/A
    18-2154GLM
    • 21010
    Mallory
    • 9-76133
    Mercruiser Stern Drive
    • 23-30617A1
    • 23-30617A2
    • 23-8M0112749
    Mercury Marine
    • 23-30617A1
    1Shift Shaft Housing Bushing N/A
    18-3116GLM
    • 12410
    Mallory
    • 9-43211
    Mercruiser Stern Drive
    • 46-48743A1
    • 46-64141A1
    • 46-96148A1
    • 46-96148T1
    Mercury Marine
    • 46-48743A1
    • 46-64141A1
    • 46-96148
    • 46-96148A1
    • 46-96148T1
    1Water Pump Housing N/A
    18-3017Chrysler/Force/US Marine
    • 47-803631T
    • 47-F694065
    GLM
    • 89840
    Mallory
    • 9-45306
    Mercruiser Stern Drive
    • 47-30221
    • 47-65960
    • 47-89984
    • 47-89984T4
    Mercury Marine
    • 47-30221
    • 47-65960
    • 47-85460
    • 47-89984
    • 47-899842
    • 47-899844
    • 47-89984T3
    • 47-89984T4
    1Impeller N/A
    18-2914GLM
    • 31010
    Mallory
    • 9-60034
    Mercruiser Stern Drive
    • 27-32433
    • 27-856081
    • 27-8M0090319
    Mercury Marine
    • 27-30603
    • 27-32433
    • 27-85608
    • 27-856081
    • 27-8M0090319
    1Water Pump Gasket N/A
    18-7158GLM
    • 81160
    Johnson/Evinrude Outboard
    • 309731
    • 310585
    Mallory
    • 9-76543
    Mercruiser Stern Drive
    • 25-30613
    • 25-846357
    Mercury Marine
    • 25-30613
    • 25-846357
    OMC Stern Drive
    • 310585
    • 310967
    1O-Ring N/A
    18-7176Chrysler/Force/US Marine
    • 25-90011
    • 25-F74305
    • F694555
    • F74035
    • F74305-1
    GLM
    • 81390
    Mallory
    • 9-76554
    Mercruiser Stern Drive
    • 25-896523
    • 25-90011
    Mercury Marine
    • 25-896523
    • 25-90011
    1O-Ring N/A
    18-2944GLM
    • 85140
    Mallory
    • 9-76512
    Mercruiser Stern Drive
    • 26-45577
    • 26-455771
    • 26-45577B
    • 26-45577B1
    1Seal Ring Gasket N/A
    18-7173Chrysler/Force/US Marine
    • 25-30224
    GLM
    • 82250
    Johnson/Evinrude Outboard
    • 310327
    Mallory
    • 9-76501
    Mercruiser Stern Drive
    • 25-30224
    • 25-30224Q
    Mercury Marine
    • 25-27018
    • 25-30224
    • 25-30224Q
    OMC Stern Drive
    • 310327
    1O-Ring N/A
    18-2826GLM
    • 31040
    Mallory
    • 9-60036
    Mercruiser Stern Drive
    • 27-33146
    • 27-856704
    Mercury Marine
    • 27-33146
    • 27-85610
    • 27-856101
    1Water Pump Base Gasket N/A
    18-2915GLM
    • 31020
    Mallory
    • 9-60035
    Mercruiser Stern Drive
    • 27-32434
    • 27-856091
    • 27-858524
    Mercury Marine
    • 27-30604
    • 27-32434
    • 27-85609
    • 27-856091
    • 27-858524
    1Water Pump Gasket N/A
    18-3117GLM
    • 12510
    Mallory
    • 9-43400
    Mercruiser Stern Drive
    • 32435
    Mercury Marine
    • 30605
    • 32435
    • 324351
    • 32435B
    1Impeller Plate N/A
    18-7162Chrysler/Force/US Marine
    • 25-33145
    GLM
    • 82260
    Johnson/Evinrude Outboard
    • 302337
    Mallory
    • 9-76547
    Mercruiser Stern Drive
    • 25-32424
    • 25-33145
    Mercury Marine
    • 25-33145
    Mercury Sport Jet
    • 25-33145
    OMC Stern Drive
    • 302337
    • 302377
    • 3852044
    Sears
    • 25-33145
    Volvo Penta
    • 3852044
    1O-Ring N/A
    18-2919GLM
    • 31050
    Mallory
    • 9-60031
    Mercruiser Stern Drive
    • 27-426311
    Mercury Marine
    • 27-42631
    • 27-426311
    1Water Pump Gasket N/A
    18-2801GLM
    • 31030
    Mallory
    • 9-60028
    Mercruiser Stern Drive
    • 27-32438
    Mercury Marine
    • 27-32438
    1Water Pump Gasket N/A
    18-7426GLM
    • 21330
    Mallory
    • 9-76562
    Mercruiser Stern Drive
    • 25-30271
    Mercury Marine
    • 25-30271
    Mercury Sport Jet
    • 25-30271
    1O-Ring N/A
    18-2013GLM
    • 85040
    Mallory
    • 9-76108
    Mercruiser Stern Drive
    • 26-16977
    • 26-31507
    • 26-79884
    • 802276
    Mercury Marine
    • 26-16977
    • 26-20465
    • 26-31507
    • 26-79884
    • 802276
    1Oil Seal N/A
    18-2014Chrysler/Force/US Marine
    • 26-F694305
    GLM
    • 85070
    Mallory
    • 9-76109
    Mercruiser Stern Drive
    • 26-33144
    • 26-77634
    • 26-89238
    Mercury Marine
    • 26-33144< li>
    • 26-77634
    • 26-89238
    1Oil Seal N/A
    18-2009GLM
    • 85050
    Mallory
    • 9-76105
    Mercruiser Stern Drive
    • 26-31249
    • 26-46021
    • 26-89236
    • 26-892361
    Mercury Marine
    • 26-25776
    • 26-31249
    • 26-89236
    1Oil Seal N/A
    18-7153GLM
    • 81180
    Mallory
    • 9-76505
    Mercruiser Stern Drive
    • 25-25439
    Mercury Marine
    • 25-25439
    Mercury Race Outboard
    • 25-25439
    Mercury Race Sterndrive
    • 25-25439
    OMC Stern Drive
    • 3852565
    • 911851
    Volvo Penta
    • 3852565
    • 997368
    1O-Ring N/A
    10 Results (Viewing 1 - 10 of 10)