Sierra / Mallory

Additional Details:

• For: Mercury 20 Hp

Interchanges/Replaces

GLM

• 31200

Mercury Marine

• 27-39625

Additional Details:

• For: Mercury 20 Hp

Interchanges/Replaces

GLM

• 31200

Mercury Marine

• 27-39625

Interchanges/Replaces

GLM

• 31060

Mallory

• 9-60039

Mercruiser Stern Drive

• 27-32769

Mercury Marine

• 27-19553
• 27-32769

Additional Details:

• For: 4-Stroke O/B's 25/30/40/45/50 Hp SN 0G760300 & Up

Interchanges/Replaces

Chrysler/Force/US Marine

• 26-821310

Mercury Marine

• 26-821310

Interchanges/Replaces

Chrysler/Force/US Marine

• 27-19701

GLM

• 37470

Mallory

• 9-60027

Mercury Marine

• 27-19701
• 27-197011
• 27-8M0036675
• 27-8M4502052

Key Features:

• For filling lower units on outboards and stern drives
• Tapered/unthreaded hose end

Additional Details:

• Size: 5 Gallon (18.95L)

Use With:

• 18-9600-5: Premium Lower Unit Gear Lube (5 Gallons)(18.95L)
• 18-9620-5: Type "C" Gear Lube (5 Gallon)(18.95L)
• 18-9650-5: Hi-Performance Gear Lube (5 Gallons)(18.95L)

Interchanges/Replaces

Mallory

• 9-81004

Key Features:

• Fits: Cobra 2.3, 3.0, 3.8 & 5.8L (1986-95), V-6, V-4 (1979-Up), 60-75hp 3 cyl. 40/50hp (1989-98)

Additional Details:

• Head Style: Slot Head

Interchanges/Replaces

GLM

• 21731

Johnson/Evinrude Outboard

• 318544

Mallory

• 9-72654

OMC Stern Drive

• 318544
• 912624

Additional Details:

• Thread: M8-1.25

Use With:

• 18-4698: Drain Fill Washer
• 18-46981-9: Drain Fill Washer (Priced Per Pkg of 50)

Interchanges/Replaces

Mallory

• 9-72652

Yamaha Outboard

• 688-45341-00-00
• 688-45341-10-00
• 90340-08M02-00

Key Features:

• .010 Undersize

Interchanges/Replaces

Mercruiser Stern Drive

• 15103A4
• 23-853851
• 74313A4

Key Features:

• .020 Undersize

Interchanges/Replaces

Mercruiser Stern Drive

• 15103A3
• 23-853852
• 74314A3

Key Features:

• Complete engine set

Additional Details:

• Size: Standard

Interchanges/Replaces

Mercruiser Stern Drive

• 23-34464
• 23-52261
• 23-818469
• 23-818469001
• 23-85669
• 23-85715

Additional Details:

• Size: .010

Interchanges/Replaces

Mercruiser Stern Drive

• 23-801803

Key Features:

• Removes and installs bearings

Additional Details:

• Compatible Outboard Gear Cases: MC-I, R-MR, Alpha One, Alpha One/Gen II, and all Bravo

Interchanges/Replaces

Mercury Marine

• 91-30366T1

Key Features:

• Supplied with mounting package

Additional Details:

• Fits: Most late model 2.5L 153 cid & 3.0L 181 cid w/Rochester carb 5 bolt pattern (1983-89)

Use With:

• 18-4009: Manifold End Plate
• 18-1971: Elbow
• 18-1972: Elbow
• 18-1975-1: Riser With Exhaust Tube
• 18-1978: Elbow
• 18-5021: End Plate
• 18-1204-1: Exhaust Manifold Mounting Gasket
• 18-2832-1: Manifold End Cap Gasket

Interchanges/Replaces

Barr

• MC 1 95862

GLM

• 51214

Marine Power

• 0993-000

Mercruiser Stern Drive

• 95862A5

Osco

• 5862

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-5021	Mercruiser Stern Drive 805629 Osco 5629	1	End Plate		N/A
18-4009	Barr 160252 GLM 51010 Mallory 9-40541 Mercruiser Stern Drive 52999 60252 60252A2 Osco 60252	1	Manifold End Plate		N/A
18-2833	Barr MC472799777 GLM 31520 Mallory 9-61407 Mercruiser Stern Drive 27-52076 27-99777 27-997771 27-997772 27-99777B2 Osco 52076	1	Exhaust Elbow Gasket		N/A
18-2832-1	Barr MC47-27-48043 GLM 31490 Mallory 9-61424 Mercruiser Stern Drive 27-48043 27-480431 Osco 48043	1	Manifold End Cap Gasket		N/A
18-1204-1	Barr MC472796429 GLM 33570 Mallory 9-61419 Mercruiser Stern Drive 27-96429 OMC Stern Drive 912164 Osco MO4-GH	1	Exhaust Manifold Mounting Gasket		N/A
18-0928-1	Barr MC472773814 GLM 30920 Mercruiser Stern Drive 27-73814 27-738141 27-807218	1	Gasket, Manifold End Cap		N/A
18-4263	Chrysler/Force/US Marine 22-328021 22-328022 F700633 FI5810151 GLM 21893 Mercruiser Stern Drive 22-32802 22-328021 22-328022 22-841908 Mercury Marine 22-30139 22-32802 22-328021 22-328022	1	Pipe Plug		N/A
18-4257		1	Pipe Plug		N/A

Key Features:

• Supplied with mounting package

Additional Details:

• Fits: MCM 140 (1982 & older)

Use With:

• 18-4009: Manifold End Plate
• 18-8549: Hardware Kit [Manifold Bolts]
• 18-1971: Elbow
• 18-1972: Elbow
• 18-1975-1: Riser With Exhaust Tube
• 18-1978: Elbow
• 18-5021: End Plate
• 18-1204-1: Exhaust Manifold Mounting Gasket
• 18-2832-1: Manifold End Cap Gasket

Interchanges/Replaces

Barr

• MC 1 96705

GLM

• 51212

Mercruiser Stern Drive

• 52390A1
• 96705A1

Osco

• 6705

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-4009	Barr 160252 GLM 51010 Mallory 9-40541 Mercruiser Stern Drive 52999 60252 60252A2 Osco 60252	1	Manifold End Plate		N/A
18-1990	Barr 1-73813 GLM 51030 Mercruiser Stern Drive 48045 54870 73813 73813A1 73813F1	1	Manifold Block Off Plate		N/A
18-2833	Barr MC472799777 GLM 31520 Mallory 9-61407 Mercruiser Stern Drive 27-52076 27-99777 27-997771 27-997772 27-99777B2 Osco 52076	1	Exhaust Elbow Gasket		N/A
18-2832-1	Barr MC47-27-48043 GLM 31490 Mallory 9-61424 Mercruiser Stern Drive 27-48043 27-480431 Osco 48043	1	Manifold End Cap Gasket		N/A
18-1204-1	Barr MC472796429 GLM 33570 Mallory 9-61419 Mercruiser Stern Drive 27-96429 OMC Stern Drive 912164 Osco MO4-GH	1	Exhaust Manifold Mounting Gasket		N/A
18-0928-1	Barr MC472773814 GLM 30920 Mercruiser Stern Drive 27-73814 27-738141 27-807218	1	Gasket, Manifold End Cap		N/A
18-4257		1	Pipe Plug		N/A
18-4263	Chrysler/Force/US Marine 22-328021 22-328022 F700633 FI5810151 GLM 21893 Mercruiser Stern Drive 22-32802 22-328021 22-328022 22-841908 Mercury Marine 22-30139 22-32802 22-328021 22-328022	1	Pipe Plug		N/A

Key Features:

• 1 Piece design

Use With:

• 18-1975-1: Riser With Exhaust Tube
• 18-1204-1: Exhaust Manifold Mounting Gasket

Interchanges/Replaces

Barr

• MC 1 99798

GLM

• 51210

Marine Power

• 600333

Mercruiser Stern Drive

• 860235A04
• 99798A16
• 99798A3
• 99798A9

Osco

• 9798

Key Features:

• Water cooled center discharge manifold to fit the small block GM engine. All years.

Use With:

• 18-1999: Manifold Elbow
• 18-1939: Riser

Interchanges/Replaces

Barr

• CHV-1-83

Additional Details:

• Fits: MCM 3.0L/LX (1990 & newer); Marine Power Engine Model E181S

Interchanges/Replaces

Mercruiser Stern Drive

• 806867A12
• 806867A2
• 806867A3
• 806867A8
• 806867A9
• 816329A3
• 860235A03
• 99798A18

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-0680	GLM 33580 Mallory 9-61428 Mercruiser Stern Drive 27-815528 OMC Stern Drive 3853256 914518 Volvo Penta 3853256	1	Exhaust Manifold Gasket		N/A
18-2833	Barr MC472799777 GLM 31520 Mallory 9-61407 Mercruiser Stern Drive 27-52076 27-99777 27-997771 27-997772 27-99777B2 Osco 52076	1	Exhaust Elbow Gasket		N/A

Additional Details:

• Material: CAST IRON
• Fits: 4.3L V-6

Use With:

• 18-1909-1: Riser

Interchanges/Replaces

GLM

• 51480

HGE

• 7656

OMC Stern Drive

• 3852338
• 3857656
• 914899

Volvo Penta

• 3847499
• 3857656

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
NSS	Volvo Penta 21238201	1	Adaptor, Manifold	No Image	N/A
NSS	Volvo Penta 3852538	1	Brass Reducer	No Image	N/A
18-8111	GLM 21887 Mercruiser Stern Drive 22-36382 35167 Mercury Marine 22-36382 Osco 1016004	1	Pipe Plug		N/A
18-7306	Volvo Penta 22274884 853548	1	Hose Clamp		N/A
16-135-0340-18		1	Shields #1350 H. D. Water Hose 3/4" x 18"		N/A

Additional Details:

• Material: CAST IRON
• For: Port & Starboard

Use With:

• 18-2909: Exhaust Manifold Gasket
• 18-1936: Riser
• 18-2909-9: Exhaust Manifold Gasket (Priced Per Pkg of 2)
• 18-2971: Exhaust Manifold Gasket

Interchanges/Replaces

GLM

• 51640

HGE

• 6894

Volvo Penta

• 856894

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2971-1	Barr VO47-835908 GLM 35080 Mallory 9-65800 Osco 35908 Volvo Penta 835908 856039 857618	1	Exhaust Manifold Gasket		N/A
18-2909	Barr MC47-27-99757 Crusader 97498 GLM 32170 Mallory 9-61421 Mercruiser Stern Drive 27-99757 OMC Stern Drive 3853412 910157 915025 Osco CS-GH Volvo Penta 3853412 856116 Yamaha Sterndrive YSC-12190-00-AC	1	Exhaust Manifold Gasket		N/A