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Drive Parts - Gear Set and Kit

Reverse Gear
Your Price:
$262.99

Reverse Gear

676-18-2409

Additional Details:

  • For: "R" drive (28 teeth)

Interchanges/Replaces

GLM

  • 11020

Mercruiser Stern Drive

  • 43-92320
  • 43-92320T
Upper Gear Kit
Your Price:
$1,174.99

Upper Gear Kit

676-18-1600

Additional Details:

  • Upper Gear Kit Ratio: 21:16

Interchanges/Replaces

GLM

  • 22520

OMC Stern Drive

  • 983825

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-1170Chrysler/Force/US Marine
  • 31-812767A1
GLM
  • 21541
Johnson/Evinrude Outboard
  • 983892
Mercruiser Stern Drive
  • 31-812767A1
Mercury Marine
  • 31-812767A1
  • 31-8M0103476
  • 31-F506225
  • FA506225
OMC Stern Drive
  • 983892
1Lower Pinion Bearing N/A
18-1171GLM
  • 21543
OMC Stern Drive
  • 983878
1U-Joint Shaft Bearing N/A
18-1172GLM
  • 21542
OMC Stern Drive
  • 983877
1Carrier Bearing N/A
18-1161GLM
  • 21540
Johnson/Evinrude Outboard
  • 983891
Mallory
  • 9-75122
Mercruiser Stern Drive
  • 31-35990A1
OMC Stern Drive
  • 983891
1Tapered Roller Bearing N/A
Upper Gear Kit
Your Price:
$461.99

Upper Gear Kit

676-18-6352

Additional Details:

  • Drive Gear: 20 Teeth
  • Driven Gear: 24 Teeth
  • Ratios: 1.94:1, 2.40:1
  • For: Alpha I (Gen II) (1998 & Up), 0L100040 & Up
  • For: Mercruiser Vazer

Use With:

  • 18-2411: Driveshaft Housing Assembly
  • 18-2419: Complete Upper Unit Assembly

Interchanges/Replaces

Mercruiser Stern Drive

  • 43-853642A2
Upper Gear Kit
Your Price:
$503.99

Upper Gear Kit

676-18-2257

Additional Details:

  • Ratio: 1.65:1
  • Drive Gear: 24 teeth
  • Driven Gear: 24 teeth
  • For: 6 cyl Inline

Interchanges/Replaces

GLM

  • 11225

Mercruiser Stern Drive

  • 43-803112T1

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-1160GLM
  • 21520
Mallory
  • 9-75123
Mercruiser Stern Drive
  • 31-35988A12
  • 31-35988A2
1Drive Bearing Kit N/A
18-1161GLM
  • 21540
Johnson/Evinrude Outboard
  • 983891
Mallory
  • 9-75122
Mercruiser Stern Drive
  • 31-35990A1
OMC Stern Drive
  • 983891
1Tapered Roller Bearing N/A
18-1165GLM
  • 21510
Mallory
  • 9-75117
Mercruiser Stern Drive
  • 31-61100A1
1Tapered Roller Bearing N/A
18-2203GLM
  • 11220
Mercruiser Stern Drive
  • 43-45814A5
  • 43-55765A2
  • 43-55765A3
1Upper Unit Gear Set N/A
18-2619-1GLM
  • 39620
Mallory
  • 9-62601
  • 9-62601-25
Mercruiser Stern Drive
  • 27-64818A2
  • 27-64818A3
  • 27-94996
  • 27-949962
  • 27-94996A1
  • 27-94996A2
  • 27-94996Q2
1Outdrive Gasket Set N/A
18-2648GLM
  • 87500
Mallory
  • 9-74303
Mercruiser Stern Drive
  • 26-32511A1
  • 26-32511B1
1Upper Unit Seal Kit N/A
18-2820Mercruiser Stern Drive
  • 27-45821
  • 27-64818
  • 27-64818A1
  • 27-64818A20
  • 27-64818A4
  • 27-64818Q4
1Outdrive Gasket N/A
Upper Gear Kit
Your Price:
$464.99

Upper Gear Kit

676-18-2258

Additional Details:

  • Ratio: 1.84:1
  • Drive Gear: 17 teeth
  • Driven Gear: 19 teeth
  • For: V-6 (470/485)

Interchanges/Replaces

GLM

  • 11235

Mercruiser Stern Drive

  • 43-803114T1

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-1160GLM
  • 21520
Mallory
  • 9-75123
Mercruiser Stern Drive
  • 31-35988A12
  • 31-35988A2
1Drive Bearing Kit N/A
18-1161GLM
  • 21540
Johnson/Evinrude Outboard
  • 983891
Mallory
  • 9-75122
Mercruiser Stern Drive
  • 31-35990A1
OMC Stern Drive
  • 983891
1Tapered Roller Bearing N/A
18-1165GLM
  • 21510
Mallory
  • 9-75117
Mercruiser Stern Drive
  • 31-61100A1
1Tapered Roller Bearing N/A
18-2204GLM
  • 11230
Mercruiser Stern Drive
  • 43-75324A2
  • 43-75325A3
1Upper Unit Gear Set N/A
18-2619-1GLM
  • 39620
Mallory
  • 9-62601
  • 9-62601-25
Mercruiser Stern Drive
  • 27-64818A2
  • 27-64818A3
  • 27-94996
  • 27-949962
  • 27-94996A1
  • 27-94996A2
  • 27-94996Q2
1Outdrive Gasket Set N/A
18-2648GLM
  • 87500
Mallory
  • 9-74303
Mercruiser Stern Drive
  • 26-32511A1
  • 26-32511B1
1Upper Unit Seal Kit N/A
18-2820Mercruiser Stern Drive
  • 27-45821
  • 27-64818
  • 27-64818A1
  • 27-64818A20
  • 27-64818A4
  • 27-64818Q4
1Outdrive Gasket N/A
Upper Gear Kit
Your Price:
$547.99

Upper Gear Kit

676-18-2256

Additional Details:

  • Ratio: 1.50:1
  • Fits: R, MR, Alpha One & SS (1983-1990)
  • Drive Gear: 22 teeth
  • Driven Gear: 20 teeth

Interchanges/Replaces

GLM

  • 11215

Mallory

  • 9-79202

Mercruiser Stern Drive

  • 43-803116T1
  • 43-803117T1

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-1142GLM
  • 21560
Mercruiser Stern Drive
  • 31-32573A1
1Upper Pinion Bearing N/A
18-1160GLM
  • 21520
Mallory
  • 9-75123
Mercruiser Stern Drive
  • 31-35988A12
  • 31-35988A2
1Drive Bearing Kit N/A
18-1165GLM
  • 21510
Mallory
  • 9-75117
Mercruiser Stern Drive
  • 31-61100A1
1Tapered Roller Bearing N/A
18-2201GLM
  • 11210
Mercruiser Stern Drive
  • 43-18410A2
  • 43-18411A2
  • 43-59832A2
  • 43-59832A4
1Upper Unit Gear Set N/A
18-2619-1GLM
  • 39620
Mallory
  • 9-62601
  • 9-62601-25
Mercruiser Stern Drive
  • 27-64818A2
  • 27-64818A3
  • 27-94996
  • 27-949962
  • 27-94996A1
  • 27-94996A2
  • 27-94996Q2
1Outdrive Gasket Set N/A
18-2648GLM
  • 87500
Mallory
  • 9-74303
Mercruiser Stern Drive
  • 26-32511A1
  • 26-32511B1
1Upper Unit Seal Kit N/A
18-2820Mercruiser Stern Drive
  • 27-45821
  • 27-64818
  • 27-64818A1
  • 27-64818A20
  • 27-64818A4
  • 27-64818Q4
1Outdrive Gasket N/A
Upper Gear Kit
Your Price:
$667.99

Upper Gear Kit

676-18-2259

Additional Details:

  • Ratio: 1.98:1
  • Drive Gear: 20 teeth
  • Driven Gear: 24 teeth
  • For: 120/140

Interchanges/Replaces

GLM

  • 11245

Mallory

  • 9-79203

Mercruiser Stern Drive

  • 43-803101T1

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-1160GLM
  • 21520
Mallory
  • 9-75123
Mercruiser Stern Drive
  • 31-35988A12
  • 31-35988A2
1Drive Bearing Kit N/A
18-1161GLM
  • 21540
Johnson/Evinrude Outboard
  • 983891
Mallory
  • 9-75122
Mercruiser Stern Drive
  • 31-35990A1
OMC Stern Drive
  • 983891
1Tapered Roller Bearing N/A
18-1165GLM
  • 21510
Mallory
  • 9-75117
Mercruiser Stern Drive
  • 31-61100A1
1Tapered Roller Bearing N/A
18-2205GLM
  • 11240
Mercruiser Stern Drive
  • 43-55766A2
  • 43-55766A3
  • 43-55778A3
1Upper Unit Gear Set N/A
18-2619-1GLM
  • 39620
Mallory
  • 9-62601
  • 9-62601-25
Mercruiser Stern Drive
  • 27-64818A2
  • 27-64818A3
  • 27-94996
  • 27-949962
  • 27-94996A1
  • 27-94996A2
  • 27-94996Q2
1Outdrive Gasket Set N/A
18-2648GLM
  • 87500
Mallory
  • 9-74303
Mercruiser Stern Drive
  • 26-32511A1
  • 26-32511B1
1Upper Unit Seal Kit N/A
18-2820Mercruiser Stern Drive
  • 27-45821
  • 27-64818
  • 27-64818A1
  • 27-64818A20
  • 27-64818A4
  • 27-64818Q4
1Outdrive Gasket N/A
Upper Gear Kit
Your Price:
$327.99

Upper Gear Kit

676-18-6351

Additional Details:

  • Drive Gear: 20 Teeth
  • Driven Gear: 22 Teeth
  • Ratio: 1.47:1
  • For: Alpha I (Gen II) (1998 & Up), 0L100040 & Up

Use With:

  • 18-2416: Complete Upper Unit Assembly

Interchanges/Replaces

Mercruiser Stern Drive

  • 43-853641A2
Upper Unit Gear Repair Kit
Your Price:
$462.99

Upper Unit Gear Repair Kit

676-18-6351K

Additional Details:

  • Ratio: 1.47:1
  • For: Gen II (1998 & Up) (s/n 0L100040 & Up)

Interchanges/Replaces

Mercruiser Stern Drive

  • 43-803103T1

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-6351Mercruiser Stern Drive
  • 43-853641A2
1Upper Unit Gear Set N/A
18-1179GLM
  • 21511
Mallory
  • 9-75106
Mercruiser Stern Drive
  • 31-32575A1
  • 31-32575T1
Mercury Marine
  • 31-32575A1
  • 31-32575T1
1Tapered Roller Bearing N/A
18-1156Chrysler/Force/US Marine
  • 31-30894A1
GLM
  • 21820
Honda Outboard
  • 91051-ZW1-003
Mallory
  • 9-75118
Mercruiser Stern Drive
  • 31-30894A1
Mercury Marine
  • 31-30894A1
1Foward Gear Bearing N/A
18-3712GLM
  • 28330
Mallory
  • 9-78107
Mercruiser Stern Drive
  • 12-45810
1Carrier Nut Washer N/A
18-3713Chrysler/Force/US Marine
  • 11-F1920
  • F1348
  • F1881
GLM
  • 28360
Mallory
  • 9-78117
Mercruiser Stern Drive
  • 11-22339
  • 11-36084
  • 11-97522
Mercury Marine
  • 11-22339
1Lock Nut N/A
18-2644GLM
  • 87501
Mallory
  • 9-74302
Mercruiser Stern Drive
  • 26-88397A1
1Upper Unit Seal Kit N/A
18-2619-1GLM
  • 39620
Mallory
  • 9-62601
  • 9-62601-25
Mercruiser Stern Drive
  • 27-64818A2
  • 27-64818A3
  • 27-94996
  • 27-949962
  • 27-94996A1
  • 27-94996A2
  • 27-94996Q2
1Outdrive Gasket Set N/A
18-2282GLM
  • 23261
Mercruiser Stern Drive
  • 15-32563A1
Mercury Marine
  • 15-32563A1
1Shim Set N/A
18-2292GLM
  • 23280
Mercruiser Stern Drive
  • 15-35980A1
1Shim Kit N/A
18-2293GLM
  • 23270
Mercruiser Stern Drive
  • 15-23097A1
  • 15-36178A02
  • 15-36178A1
  • 15-39899A1
1Shim Kit N/A
NSSMercruiser Stern Drive
  • 25-853649
1Spacer, Bearing CupNo ImageN/A
Upper Unit Gear Repair Kit
Your Price:
$478.99

Upper Unit Gear Repair Kit

676-18-6352K

Additional Details:

  • Ratios: 1.94:1 & 2.40:1
  • For: Gen II (1998 & Up) (s/n 0L100040 & Up)

Interchanges/Replaces

Mercruiser Stern Drive

  • 43-803106T1

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-6352Mercruiser Stern Drive
  • 43-853642A2
1Upper Unit Gear Set N/A
18-1179GLM
  • 21511
Mallory
  • 9-75106
Mercruiser Stern Drive
  • 31-32575A1
  • 31-32575T1
Mercury Marine
  • 31-32575A1
  • 31-32575T1
1Tapered Roller Bearing N/A
18-1156Chrysler/Force/US Marine
  • 31-30894A1
GLM
  • 21820
Honda Outboard
  • 91051-ZW1-003
Mallory
  • 9-75118
Mercruiser Stern Drive
  • 31-30894A1
Mercury Marine
  • 31-30894A1
1Foward Gear Bearing N/A
18-1161GLM
  • 21540
Johnson/Evinrude Outboard
  • 983891
Mallory
  • 9-75122
Mercruiser Stern Drive
  • 31-35990A1
OMC Stern Drive
  • 983891
1Tapered Roller Bearing N/A
18-3712GLM
  • 28330
Mallory
  • 9-78107
Mercruiser Stern Drive
  • 12-45810
1Carrier Nut Washer N/A
18-3713Chrysler/Force/US Marine
  • 11-F1920
  • F1348
  • F1881
GLM
  • 28360
Mallory
  • 9-78117
Mercruiser Stern Drive
  • 11-22339
  • 11-36084
  • 11-97522
Mercury Marine
  • 11-22339
1Lock Nut N/A
18-2644GLM
  • 87501
Mallory
  • 9-74302
Mercruiser Stern Drive
  • 26-88397A1
1Upper Unit Seal Kit N/A
18-2619-1GLM
  • 39620
Mallory
  • 9-62601
  • 9-62601-25
Mercruiser Stern Drive
  • 27-64818A2
  • 27-64818A3
  • 27-94996
  • 27-949962
  • 27-94996A1
  • 27-94996A2
  • 27-94996Q2
1Outdrive Gasket Set N/A
18-2282GLM
  • 23261
Mercruiser Stern Drive
  • 15-32563A1
Mercury Marine
  • 15-32563A1
1Shim Set N/A
18-2292GLM
  • 23280
Mercruiser Stern Drive
  • 15-35980A1
1Shim Kit N/A
18-2293GLM
  • 23270
Mercruiser Stern Drive
  • 15-23097A1
  • 15-36178A02
  • 15-36178A1
  • 15-39899A1
1Shim Kit N/A
NSSMercruiser Stern Drive
  • 25-853649
1Spacer, Bearing CupNo ImageN/A
Upper Unit Gear Repair Kit
Your Price:
$593.99

Upper Unit Gear Repair Kit

676-18-2358

Additional Details:

  • Ratios: 1.50:1 (1.47:1)
  • Teeth: 20-22
  • For: Gen II applications s/n range up to 0K999999 only

Interchanges/Replaces

GLM

  • 11216

Mercruiser Stern Drive

  • 43-803102T1

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-1165GLM
  • 21510
Mallory
  • 9-75117
Mercruiser Stern Drive
  • 31-61100A1
1Tapered Roller Bearing N/A
18-2201GLM
  • 11210
Mercruiser Stern Drive
  • 43-18410A2
  • 43-18411A2
  • 43-59832A2
  • 43-59832A4
1Upper Unit Gear Set N/A
18-2820Mercruiser Stern Drive
  • 27-45821
  • 27-64818
  • 27-64818A1
  • 27-64818A20
  • 27-64818A4
  • 27-64818Q4
1Outdrive Gasket N/A
18-2840GLM
  • 31160
Mercruiser Stern Drive
  • 27-35982
1Bell Housing Gasket N/A
18-2743GLM
  • 31141
Mallory
  • 9-61012
Mercruiser Stern Drive
  • 27-94996
  • 27-949962
  • 27-94996A20
1Outdrive Mounting Gasket N/A
18-7170Chrysler/Force/US Marine
  • 25-33504
GLM
  • 82200
Johnson/Evinrude Outboard
  • 307239
Mallory
  • 9-76502
Mercruiser Stern Drive
  • 25-33504
Mercury Marine
  • 25-33504
OMC Stern Drive
  • 307239
  • 3852071
Volvo Penta
  • 3852071
1O-Ring 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
18-7153GLM
  • 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
2O-Ring
18-2644GLM
  • 87501
Mallory
  • 9-74302
Mercruiser Stern Drive
  • 26-88397A1
1Upper Unit Seal Kit N/A
18-1160GLM
  • 21520
Mallory
  • 9-75123
Mercruiser Stern Drive
  • 31-35988A12
  • 31-35988A2
1Drive Bearing Kit N/A
18-2292GLM
  • 23280
Mercruiser Stern Drive
  • 15-35980A1
1Shim Kit N/A
18-2293GLM
  • 23270
Mercruiser Stern Drive
  • 15-23097A1
  • 15-36178A02
  • 15-36178A1
  • 15-39899A1
1Shim Kit N/A
18-2283GLM
  • 23260
Mercruiser Stern Drive
  • 15-45691A1
1Shim Set N/A
Upper Unit Gear Repair Kit
Your Price:
$493.99

Upper Unit Gear Repair Kit

676-18-2365

Additional Details:

  • Ratio: 1.84:1 & 1.81:1
  • Teeth: 17-19
  • For: Gen II applications s/n range up to 0K999999 only

Interchanges/Replaces

GLM

  • 11236

Mercruiser Stern Drive

  • 43-803120T1

List of Containing Parts

Sierra Item # OE/Competitor # Quantity Description Image Comments
18-2283GLM
  • 23260
Mercruiser Stern Drive
  • 15-45691A1
1Shim Set N/A
18-2292GLM
  • 23280
Mercruiser Stern Drive
  • 15-35980A1
1Shim Kit N/A
18-2293GLM
  • 23270
Mercruiser Stern Drive
  • 15-23097A1
  • 15-36178A02
  • 15-36178A1
  • 15-39899A1
1Shim Kit N/A
18-1161GLM
  • 21540
Johnson/Evinrude Outboard
  • 983891
Mallory
  • 9-75122
Mercruiser Stern Drive
  • 31-35990A1
OMC Stern Drive
  • 983891
1Tapered Roller Bearing N/A
18-1165GLM
  • 21510
Mallory
  • 9-75117
Mercruiser Stern Drive
  • 31-61100A1
1Tapered Roller Bearing N/A
18-2644GLM
  • 87501
Mallory
  • 9-74302
Mercruiser Stern Drive
  • 26-88397A1
1Upper Unit Seal Kit N/A
18-1160GLM
  • 21520
Mallory
  • 9-75123
Mercruiser Stern Drive
  • 31-35988A12
  • 31-35988A2
1Drive Bearing Kit N/A
18-2204GLM
  • 11230
Mercruiser Stern Drive
  • 43-75324A2
  • 43-75325A3
1Upper Unit Gear Set N/A
18-2820Mercruiser Stern Drive
  • 27-45821
  • 27-64818
  • 27-64818A1
  • 27-64818A20
  • 27-64818A4
  • 27-64818Q4
1Outdrive Gasket N/A
18-2743GLM
  • 31141
Mallory
  • 9-61012
Mercruiser Stern Drive
  • 27-94996
  • 27-949962
  • 27-94996A20
1Outdrive Mounting Gasket N/A
18-7170Chrysler/Force/US Marine
  • 25-33504
GLM
  • 82200
Johnson/Evinrude Outboard
  • 307239
Mallory
  • 9-76502
Mercruiser Stern Drive
  • 25-33504
Mercury Marine
  • 25-33504
OMC Stern Drive
  • 307239
  • 3852071
Volvo Penta
  • 3852071
1O-Ring 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
18-7153GLM
  • 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
2O-Ring