Mercruiser Cooling System

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Parts Selection Guide

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      • Sierra 18-4009 Manifold End Plate Replaces 60252A2
        $78.99
        $55.49

        Sierra 18-4009 Manifold End Plate for Mercruiser & OMC Sterndrives Sierra high-quality engine parts are designed to meet OEM specifications. For Use With: 18-1950-1 Manifold 18-1951-1 Manifold 18-1958-1 Manifold 18-1960-1 Manifold 18-1962-1...

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      • Sierra 18-1977-1 MerCruiser V6/V8 Thermostat Housing
        $83.49
        $58.49

        Sierra 18-1977-1 Mercruiser Thermostat Housing Sierra high-quality engine parts are designed to meet OEM specifications. Fits MCM/MIE GM V-6 & V-8 (305 & 350 cid) engines & Hi-Perf 454, 502 & 540 cid engines. Interchangeable...

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      • Sierra 18-2759 Exhaust Tube Replaces 53114A1
        $66.99
        $46.99

        Sierra 18-2759 Mercruiser Exhaust Tube Sierra high-quality engine parts are designed to meet OEM specifications. This Tube fits MCM 120 & 140: 160 & 165 (in-line 6 cyl.) Interchangeable with: GLM 89060 Mallory 9-72807 Mercruiser...

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      • Pack of 2 EMP 22-22000-2 MerCruiser Drain Plug
        $4.02
        $3.35

        EMP 22-22000-2 MerCruiser Drain Plug Pack of 2 This drain plug is intended for use with MerCruiser manifolds and meets all OEM requirements. Widely used for draining cooling system for winterization. Drain Plug Application: Fits MerCruiser manifold...

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      • Sierra 18-3550 Thermostat Replaces 59078
        $34.99
        $24.49

        Sierra 18-3550 Mercruiser 140 Degree Thermostat Sierra high-quality engine parts are designed to meet OEM specifications. For use on Mercruiser Stern Drives and Chrysler/Force/US Marine engines. 140 Degree Temperature Rating Fits Mercruiser 120/2.5L...

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      • Sierra 18-3667 Thermostat Kit
        $29.49
        $20.99

        Thermostat Kit for Mercruiser Engines 160 degree Includes thermostat (18-2555) and gasket (18-3555) Replaces: OEM 27-89656-1 (Gasket) and 99155A-1 (Thermostat)

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      • Mercury - Mercruiser 47-89984T-4 Impeller
        $49.19
        $40.99

        Mercury - Mercruiser 47-89984T-4 Impeller Fits MCM & Outboard applications Uses a brass insert. An alternate glass insert impeller (47-89984T 3) is available for increased corrosion protection in salt water applications...

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      • Sierra 18-15290 V-Belt Replaces 57-13457Q
        $21.99
        $15.49

        Sierra 18-15290 Mercruiser Water Pump V-Belt Sierra high-quality engine parts are designed to meet OEM specifications. Sierra V-Belts are designed to meet or exceed OEM requirements. Their low stretch properties assure uniform performance over the...

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      • Sierra 18-3584-1 Circulating Water Pump
        $234.99
        $164.49

        Sierra 18-3584-1 Circulating Water Pump Sierra 18-3584-1 is a replacement Circulating Water Pump for use in Ford V-8 engines. Like all Sierra aftermarket parts, this pump is manufactured to meet or exceed all OEM requirements. Interchangeable...

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      • Sierra 18-15480 V-Belt Replaces 57-48122Q
        $28.49
        $19.99

        Sierra 18-15480 Mercruiser V-Belt Sierra V-Belts are designed to meet or exceed OEM requirements. Their low stretch properties assure uniform performance over the life of the belt. High strength synthetic cords resist shockload Special rubber...

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      • Sierra 18-2834 Thermostat Cover Gasket Replaces 27-60208
        $1.49
        $0.89

        Sierra 18-2834 Thermostat Cover Gasket Sierra replacement thermostat cover gasket for Mercruiser Stern Drives. Sierra aftermarket parts are manufactured to meet or exceed OEM requirements. Fits: MCM/MIE Ford V-8 engines Interchangeable...

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      • Sierra 18-0721 Open Elbow Gasket
        $82.99
        $57.99

        Sierra 18-0721 Mercruiser Open Exhaust Elbow Gasket Sierra high-quality engine parts are designed to meet OEM specifications. Sierra Mercruiser dry joint open riser gasket. This full flow gasket offers standard cooling Fits: MerCruiser Dry Joint...

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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!