Mercruiser Gaskets, Seals & O-Rings

Aftermarket O-Ring 12.7 x 2.5mm Part#: S-18-7134 I.D.: 0.500" or 12.7mm Width: 0.100" or 2.5mm Interchange: Chrysler/Force/US Marine - 25-20195, 25-F40342 GLM - 81120 Johnson/Evinrude Outboard - 303059, 339543 Mallory - 9-76511 Mercruiser Stern...

Aftermarket Mercruiser 20826 Driveshaft Gear Housing O-Ring ID: 2.234" or 56.7mmWidth: 0.139" or 3.5mmFits: MCM 575 SCi, 600SC, 800SC Interchange: GLM82280 Mercruiser Stern Drive25-20826 Mercury Marine25-2031125-20826

Aftermarket Mercruiser 75611001 & Volvo 3853380 Head Gasket For: GM V8 305 (5.0L)/350 (5.7L) CID Eng.Fits: MCM/MIE GM V8 (283, 305, 327, 350 & 377 cid) engines Sold individually. Use With:18-4392  Intake Manifold Gasket Set18-1267  Head...

Aftermarket Mercury & Mercruiser Style Drain Plug Washer Gasket Used with: 3/8-16 drain/fill screw found on all MerCruiser and most Mercury/Mariner O/B'sUsed in: most lower units and sea water pumps Use With:18-23751-9  Drain Screw...

Aftermarket Mercruiser 27-530451 Thermostat Gasket Fits: MCM/MIE GM V6 & V8 enginesUse with: 18-3649 Thermostat Interchangeable with the following:GLM31560 GM3701777Mercruiser Stern...

Aftermarket Mercruiser 27-11999 Valve Cover Gasket For: GM 305/350 CID (5.0L & 5.7L) Sold individually. Interchangeable with the following:GLM30353Mercruiser Stern Drive27-1199927-3404327-52202FI1101236FI5000161 OMC Stern Drive912965 Crusader91351...

Aftermarket Mercruiser 27-488181 Thermostat Gasket Fits: MCM/MIE GM V8 engines Interchangeable with the following:GLM31510Mercruiser Stern Drive27-4881827-48818127-48818Q01 BarrMC47-27-48818

Aftermarket Mercruiser 27-54014Q1 Outdrive Gasket Set Fits: 215E, 215H, TR and TRS drives Set Contents: Contents Part Outdrive Gasket 18-2847 O-Ring 18-7175 Interchangeable with the following:GLM39600Mercruiser Stern...

Aftermarket Mercruiser 4 Cylinder 27-896561 Thermostat Cover Gasket Fits: MCM 3.7L engines 4 cyl. 165, 170, 180, 190 3.7LX and 470 Mercruiser 224 L4. Interchangeable with the following:GLM32100Mercruiser Stern Drive27-8965627-896561

Aftermarket Mercruiser 27-75611A03 V8 Vortec Head Gasket Set For: Small bock GM V8 engines with Vortec headsFits: MCM/MIE GM V8 (305,350 and 377 cid) Gen + engines (1996 and Newer) Contents: Set Contains Part Number 2 Head Gaskets 18-3876 1 Intake...

Aftermarket Mercruiser 27-8079821 Carburetor Mounting Gasket Part: 18-0994 Superceded to: 18-0994-9 For: Rochester & MerCarb 2bbl. Interchangeable with the following: BarrMC472770143 GLM32180 Mercruiser Stern...

Aftermarket Mercruiser 27-87707 Distributor Gasket  Part: 18-0948 (Superceded to: 18-0948-9) Fits: GM 4 cyl. engines with conventional ignition Interchangeable with the following: GLM32300 Mercruiser Stern Drive27-87707

Aftermarket Mercruiser 27-34897 & Volvo 3852477 Water Pump Mounting Gasket Fits: GM V6 and V8 (305, 350 and 377 cid) engines Sold individually Interchangeable with the following: Chris-Craft16.50-00078 GLM31380 Mercruiser Stern...

Aftermarket Mercruiser 27-18272 Exhaust Elbow Gasket Fits MCM 3.7L engines with aluminium exhaust manifolds (1985-1989) Use with: 18-8530: Exhaust Elbow Mounting Kit 18-1937: Elbow Interchangeable with the following: GLM32470 Mercruiser Stern...

Aftermarket Mercruiser 27-344863 & Volvo 3852109 Distributor Gasket Part: 18-0874 Superceded to: 18-0874-9 For: 2.6L (1989), 3.5L (1989), 4.3L (1987-93), 5.0L (1987-88)For: 5.7L (1987--92), 7.4L (1988-93, 8.2L (1992-93)For: GM V6 and V8Package of 2...

Aftermarket Mercruiser 8M0150306 & Volvo Penta 3852687 Valve Cover Gasket Part# S-18-0664 For GM 305/350, 5.0 and 5.7L Interchangeable with the following: GLM 30357 Mercruiser Stern Drive 27-17467 FI1101287 8M0150306 Volvo Penta 3852687 856072

Aftermarket Volvo Penta 3852657 & Mercruiser 8M0077606 One Piece Rear Main Seal Part# S-18-0519 Product Details: One piece rear main seal O.D.: 4.536" Shaft Size: 3.792" Width: 0.482" For: 5.0L/5.7L, 4.3L, 3.0L Std. Rotation Interchangeable with...

Aftermarket Mercruiser 27-807473A1 & Volvo 3857662 Intake Gasket Part# S-18-0488 Fits: MCM 350 Mag, 5.0L and 5.7L/LX (Gen+)(1996 and Up) Interchangeable with the following: Mercruiser Stern Drive 27-807473A1 Volvo Penta 3857662

Aftermarket GM Big Block V8 Exhaust Manifold Mounting Gasket Part# S-18-0418 Fits: MCM/MIE GM V8 (454, 482, 496, 502 and 540 cid) engines Fits: Volvo 7.4L, GL, GI, GSI, and 8.2L, GL, GI, GSI Use with: 18-1898:Manifold 18-1929:Manifold 18-1933:Manifold...