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Parts Selection Guide

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Prop Selection Guide

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Mercruiser Head Gaskets

Mercruiser Valve Cover Gaskets

Mercruiser Crankshaft Seals

Mercruiser Engine Gasket Sets

Mercruiser Cylinder Heads

Mercruiser Oil Pans

Mercruiser Oil Pan Gaskets

Mercruiser Main & Rod Bearings

Mercruiser Pistons & Rings

Mercruiser Hydraulic Lifters

Mercruiser 3.7L Parts & Gaskets

      Mercruiser Internal Engine Parts

      • Mercury - Mercruiser 27-8M0092920 Valve Cover Gasket
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        Mercury - Mercruiser 27-8M0092920 Gasket

        $122.49
        $106.49

        Mercury - Mercruiser 27-8M0092920 Valve Cover Gasket Genuine OEM Mercury-Mercruiser part. Replacement valve cover gasket for Mercury Mercruiser Sterndrives and Inboards. Special Order Item Supersedes: 811588  

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      • Mercury - Mercruiser 28-54797-1 Valve Keeper
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        Mercury - Mercruiser 28-54797-1 Valve Keeper

        $13.99
        $11.99

        Mercury - Mercruiser 28-54797-1 Valve Keeper Genuine OEM Mercury - Mercruiser part. Replacement valve keeper / key.  Application: MCM/MIE 4 & 6 cyl, V‑6 & V‑8 (283, 302, 305, 327,350 & 351 cid) engines

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      • Sierra 18-0153 Oil Pan Gasket Set
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        Sierra 18-0153 Oil Pan Gasket Set

        $59.99
        $45.49

        Sierra 18-0153 Oil Pan Gasket Set Sierra Oil Pan Gasket Set is for use with engines that have a port mounted dipstick. For OMC 5.7L engines. Fits MCM/MIE 228, 250, 255, 280 & 898/198 (1976-1984) Interchangeable...

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      • Sierra 18-0322 Oil Pan Gasket
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        Sierra 18-0322 Oil Pan Gasket

        $13.49
        $9.99

        Sierra 18-0322 Rear Seal Gasket for GM engines For use on GM 3.0, 4.3, 5.0, 5.7 L engines (1990 - 1997) Interchangeable with: GLM 30354 Mallory 9-61511 Mercruiser Stern Drive 27-14241 27-881715 FI1101298 OMC Stern...

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      • Sierra 18-0348 Oil Pan Gasket Set
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        Sierra 18-0348 Oil Pan Gasket Set

        $37.99
        $30.99

        Sierra 18-0348 Oil Pan Gasket Set Sierra replacement oil pan gasket set for OMC Inboard and Mercruiser Stern Drive. Fits: MCM/MIE GM V-8 (427, 454, 482, 502 & 540 cid) engines (1969-1992) Interchangeable...

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      • Sierra 18-0864 One Piece Rear Main Seal
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        Sierra 18-0864 One Piece Rear Main Seal

        $46.99
        $32.99

        Sierra 18-0864 One Piece Rear Main Seal Sierra One Piece Rear Main Seal for use on Mercruiser Stern Drives. For 224I/L4 Interchangeable with: Mallory 9-61623 Mercruiser Stern Drive 26-67389 26-90925  

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      • Sierra 18-0937 Carb Mounting Gasket
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        Sierra 18-0937 Carb Mounting Gasket

        $5.99
        $4.49

        Sierra 18-0937 Carburetor Mounting Gasket for 2 bbl Rochester Carburetors Sierra Carburetor Mounting Gasket, use with Sierra 18-1901 Manifold. Interchangeable with: Barr OMC47315055 GLM 34700 Johnson/Evinrude Outboard 315055 OMC...

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      • Sierra 18-1339 Cam Bearings
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        Sierra 18-1339 Cam Bearings

        $51.99
        $36.49

        Complete Set of Cam Bearings for 2.5/3.0L Mercruiser, OMC, Volvo - Special Order est. 10 Days Comes in pack of 3 Fits: 2.5L/153 CID 3.0L/181 CID Replaces: Mercury 23-43293T Redline RL1339

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      • Sierra 18-4375 Timing Chain Gasket Set
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        Sierra 18-4375 Timing Chain Gasket Set

        $10.49
        $6.99

        Sierra 18-4375 Mercruiser Timing Chain Gasket Set Sierra replacement timing chain gasket set for Mercruiser Stern Drives. For: Mercruiser GM 153 & 181 eng; 110, 120, 130, 140, 150, 160 & 165 hp; 2.5L & 3.0L Interchangeable...

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      • Sierra 18-4381 Overhaul Gasket Set
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        Sierra 18-4381 Overhaul Gasket Set

        $217.49
        $164.99

        (1072) GASKET SET - Special Order Item Contains: Exhaust Elbow Gasket 18-0111 Intake Manifold Gasket 18-0158 Oil Seal 18-0172 Oil Seal 18-0175 Remote Oil Seal 18-0185 O Ring 18-0860 One Piece Rear Main Seal 18-0864 Distributor Cap 18-0874...

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      • Sierra 18-4485 Cylinder Head Assembly
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        Sierra 18-4485 Cylinder Head Assembly

        $1,197.99
        $838.99

        Cylinder Head Assembly for 5.7L (1987 - 1995) - Special Order est. 10 Days Key Features Fits: 5.7L V8 GM (1987-95)w/press in rocker arm studs w/12 intake mntg bolts High performance scre in rocker arm studs utilized in GM cyl. heads Hardned Steel...

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      • Sierra 18-4486 High Performance Cylinder Head
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        Sierra 18-4486 High Performance Cylinder Head

        $1,135.99
        $863.49

        Sierra 18-4486HP High Performance Cylinder Head All cylinder heads are new castings Complete assemblies with new stainless steelvalves Hardened steel exhaust seats, valve springs, valve locks & retainers High performance screw-in rocker arm...

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      • Sierra 18-5961-9 Freeze Plug (Pkg Of 8)
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        Sierra 18-5961-9 Freeze Plug (Pkg Of 8)

        $52.49
        $36.99

        Sierra 18-5961-9 Freeze Plug (Pkg Of 8) Sierra replacement freeze plug for Mercruiser stern drives. Material: Bronze Size: 1 5/8" or 41.3mm Package of 8 Interchangeable with: Mercruiser Stern Drive 19-34270 Supersedes 18-5961

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      • Mercury - Mercruiser 26-811545 Seal
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        Mercruiser 26-811545 Valve Seal

        $48.99
        $23.49

        Mercruiser 26-811545 Valve Seal Genuine OEM Mercury - Mercruiser part. Replacement valve seal for Mercruiser Sterndrives. Application: MCM/MIE 7.4L/LX, 454 Mag & 8.2L (Gen V & VI) Intake and Exhaust

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      • Mercruiser 938-883490R-1 Cylinder Head - RM 5.7L
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        Mercruiser 938-883490R-1 Remanufactured Cylinder Head 5.7L

        $1,327.99
        $1,154.99

        Mercruiser 938-883490R-1 Remanufactured Cylinder Head 5.7L Genuine OEM Mercury-Mercruiser part. Fully assembled remanufactured cylinder head (brand new head casting). Fits: MCM/MIE (1987 - 1996) 5.7L (non-Gen +) engines Special Order Item.

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      Mercruiser OEM Engine Parts Finder

      Mercruiser Gaskets & Seals

      When your Mercruiser outboard needs an overhaul, it can be costly and time consuming. Sometimes the culprit is a blown gasket or seal. These are among the least expensive engine components, yet when compromised, can cause significant damage. Wholesale Marine has compiled a troubleshooting list so that a little routine maintenance can prevent expensive repairs and more carefree voyages and fishing trips!

      The best times to examine your outboard are prior to winter storage and when prepping your boat for the new season. If you do not elect to perform this meticulous work yourself, at least you can know what the process involves and be better aware of the function of various outboard components.

      Check for Leaking Mercruiser Gaskets

      A loss of air compression is usually a sign that the outboard has a cracked or leaking gasket. This must be attended to immediately and not with a band aid fix to avoid a piston seizure or worse. Here’s why: the normal vacuum in the engine’s lower end draws a fuel/air mixture from the carburetor. It’s sealed off and moved through the transfer ports to the cylinder. A leaky or lean air mixture usually results in a seized piston. To troubleshoot, perform a pressure test.

      1)  Using a plug or rubber gasket, seal off the intake manifold.

      2)  Plug the exhaust port as well.

      3)  Attach an air fitting through the inlet plug or spark plug hole to pressurize the motor.

      4)  Pressurize the motor to 6-9 psi using a hose with an in-line gauge. Do not exceed 9 psi.

      5)  Watch the gauge for 10 minute to confirm that there is no loss of pressure. Pressure loss of any kind is unacceptable.

      6)  If pressure loss is indicated, spray the gasket with WD-40 which creates bubbles. It will also create a leaking sound.

      7)  Replace the leaking gasket. Wholesale Marine has Mercruiser gaskets and gasket kits for every Mercruiser outboard. Use our convenient parts finder to locate the right gaskets for your outboard.

      8)  Other sources of air leaks may be bolt holes and any casting anomalies. Check these as well and replace fitting as necessary.

      If you have boating questions call us for answers! Wholesale Marine’s knowledgeable staff of watercraft enthusiasts will be glad to help. We offer a lowest price guarantee as well as flat rate shipping for $6.99. Join our Loyalty Program and you’ll be able to use the points you accumulate today towards any future purchases. Just give us a call Monday through Friday from 9:00 AM until 6:00 PM EST at (877) 388-2628.