Mercruiser Cooling System

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Parts Selection Guide

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Prop Selection Guide

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      • EMP 57-57513 MerCruiser V6/V8 Exhaust Center Riser Elbow
        $215.95
        $179.96

        EMP 57-57513 MerCruiser V6/V8 Exhaust Center Riser Elbow This EMP exhaust center riser elbow fits most MerCruiser V6/V8 applications and meets all OEM requirements. Product Features: 4" Exhaust Outlet 7° Down Angle Interchangeable BARR...

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      • Sierra 18-0667 Connector Cover Gasket
        $0.99
        $0.80

        Sierra 18-0667 Connector Cover Gasket Sierra high-quality engine parts are designed to meet OEM specifications. For use on Mercruiser Stern Drives. Interchangeable with: GLM 32160 Mercruiser Stern Drive 27-995061 27-99506

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      • CLEARANCE
        Sierra 18-4257 Pipe Plug
        $1.99
        $1.49

        Sierra 18-4257 Pipe Plug Sierra high-quality replacement pipe plug for use.  Material: Black Steel Thread Size: 1/4" Note: Pipe sealant with Teflon is recommended for use on plug threads. Use with: 56507 Loctite Pipe Sealant (PST 6ml w/...

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      • Sierra 18-43015 Mercruiser Thermostat
        $29.49
        $22.49

        Sierra 18-43015 Mercruiser Thermostat Sierra replacement thermostat for Mercruiser Stern Drives. Fits: MCM 4.3L, 5.0L, 5.7L & 6.2L MPI engines w/dry joint exhaust & closed cooling Temperature Rating: 170°F (77°C) Interchangeable...

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      • Sierra 18-1974-1 Manifold Elbow Replaces 98502A2
        $428.99
        $299.99

        Sierra 18-1974-1 MerCrusier V6/V8 Manifold Elbow Replaces 98502A2 This Sierra aftermarket exhaust manifold elbow is for MerCruiser V6 and V8 engines. This manifold elbow has a 3" outlet with a 0° down angle and comes with brass plugs and a...

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      • Sierra 18-2007 Oil Seal Replaces 26-94038
        $15.99
        $10.99

        Sierra 18-2007 Oil Seal Sierra high quality aftermarket parts are manufactured to meet or exceed OEM requirements. O.D.: 1.500" Shaft Size: 1.000" Width: 0.312" Interchangeable with: GLM 85600 Mallory 9-76103 Mercruiser Stern...

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      • Sierra 18-2919 Water Pump Gasket
        $0.96
        $0.86

        Sierra 18-2919 Water Pump Gasket Interchangeable with: GLM 31050 Mallory 9-60031 Mercruiser Stern Drive 27-426311 Mercury Marine 27-42631 27-426311

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      • CLEARANCE
        Sierra 18-3567 Rubber Valve
        $0.85
        $0.57

        Sierra 18-3567 Rubber Valve (V6 Crossflow) Sierra replacement rubber valve for Johnson/Evinrude V6 Crossflow. Sierra replacement engine parts are manufactured to meet or exceed OEM requirements. Interchangeable with: GLM 46140 Johnson/Evinrude...

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      • EMP 46-00091 Mercury MerCruiser Impeller Service Kit
        $41.27
        $34.39

        EMP 46-00091 Mercury MerCruiser Impeller Service Kit This impeller service kit is intended for use on Mercury and MerCruiser engines and meets all OEM requirements. Impeller Service Kit Application: For 1999-2006 Mercury Mariner V6 135-225HP...

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      • Sierra 18-15405 V-Belt Replaces 57-76269Q
        $8.99
        $6.49

        V-belt for OMC, Volvo and Mercruiser Engines - Effective Length 40 1/2", Top Width 29/64" Replaces: Mercury 57-76269Q, 57-76269 Volvo 978515 OMC 0509307 Details: High strength synthetic cords resist shockload failure. Their low...

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      • EMP 57-57520 MerCruiser V8 GM Small Block Exhaust Manifold
        $263.95
        $219.96

        EMP 57-57520 MerCruiser V8 GM Small Block Exhaust Manifold This exhaust manifold is designed for use with MerCruiser cooling systems and meets OEM specifications. Exhaust Manifold Application: Fits most MerCruiser (GM) small blocks with center...

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      Mercruiser OEM Engine Parts Finder

      MerCruiser Cooling Systems

      The cooling system of your MerCruiser engine keeps it from overheating and ensures that it’s operating at its best. It’s important to keep the entire cooling system updated and maintained, since its health is at the forefront of your engine’s overall performance. If you need parts for your MerCruiser cooling system, simply call Wholesale Marine. We will always have just what you need.

      Keep it Cool with MerCruiser Cooling Systems

      A boat’s engine, such as your MerCruiser sterndrive or inboard engine, is a delicate piece of machinery full of moving parts that each need special attention. In times past, a boat's engine was simply cooled by pulling raw water straight out of the source the vessel was floating in, running that through the engine, and out the other end. This left an engine with several issues, such as saltwater corrosion, large debris, and lack of efficiency. Further still, this sort of cooling system once upon a time only ran at 145 to 150 degrees, as regulated by a thermostat, to avoid saltwater crystallization. This is an issue due to a number of reasons, one of which was the amount of build-up that would occur at such cool temperatures.

      Today, we have engines full of checks and balances to get our MerCruiser sterndrive or inboard at max power without overheating. And Wholesale Marine has everything you need to run preventative maintenance on your vessel and to upgrade your older parts. Water pumps, impellers, thermostats, gaskets, circulation pumps, shutter and exhaust tubes, exhaust manifolds, hoses, belts, and more are all here to fit MerCruiser cooling systems. Ready to get started? Check out our easy-to-use Parts Selection tool to quickly get you exactly what you are searching for. We stock OEM and aftermarket Mercury outboard parts and Mercury sterndrive parts for less!

      For keeping that sterndrive, inboard, or tow sport engine cool come rain or shine, you can depend on Wholesale Marine to provide high quality Mercury outboard parts and Mercury sterndrive parts from the top brands in the industry. Our same day shipping, free shipping on orders over $99, and price match guarantees give you quality parts in a timely and economical manner. Review our selection today and give us a call with your questions at (877) 388-2628. Be sure to ask about our Captain’s Club Rewards Program for additional discounts on everything you need to keep your boat in top shape for your next adventure!