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      Mercruiser Cooling System Product Listings

      • Sierra 18-4226 Drain Plug Replaces 22-806608A02
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        $4.59
        $3.89

        Sierra 18-4226 MerCruiser Blue Plastic Drain Plug This Sierra 18-4226 drain plug is widely used for MerCruiser V4, V6 and V8 marine engines. Fits MerCruiser cylinder blocks and exhaust...

      • Sierra 18-3214 Impeller Kit Replaces 47-8M0100526
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        $48.69
        $35.09

        Sierra 18-3214 Impeller Kit for Mercury Restore proper water pump function with the Sierra 18-3214 impeller kit for MerCruiser Alpha One Gen II systems (D494569 and above). Featuring rubber vanes...

      • Sierra 18-1976-2 MerCruiser V6/V8 2002 & Older Manifold Elbow
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        $247.09
        $145.79

        Sierra 18-1976-2 MerCruiser V6/V8 GM 2002 & Older Manifold Elbow Replaces 807988A03 Unlike automotive engines, all marine inboards have exhaust risers that feature a water induction elbow. Located...

      • SALE
        Sierra 18-1953-2 Exhaust Manifold
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        $347.99
        $240.09
        $199.99

        Sierra 18-1953-2 MerCruiser V8 1983-2002 Exhaust Manifold The Sierra 18-1953-2 is a direct OEM replacement exhaust manifold designed for MerCruiser GM Small Block V8 engines from 1983 to 2002,...

      • Sierra 18-3150 Water Pump Kit Replaces 46-807151A14
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        $135.59
        $100.29

        Sierra 18-3150 MerCruiser Bravo Water Pump Kit The Sierra 18-3150 Water Pump Kit is for use on all MerCruiser Bravo and TRS Sterndrives and Inboard Marine engines. Can be used to replace the 2 piece...

      • Sierra 18-3599-2 Circulating Water Pump Replaces 8503991
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        $171.39
        $131.89

        Sierra 18-3599-2 Water Circulating Pump Sierra high-quality engine parts are designed to meet OEM specifications. Fits Both Standard and Counter Rotating Engines. Features: Fits GM V-6 (s/n...

      • Mercury - Mercruiser Body 46-807151A14 Impeller Kit Thumbnail Image
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        $149.39
        $124.49

        Quicksilver 46-807151A14 Body Impeller Kit Quicksilver 807151A14 Sea Water Pump Body Kit is a complete replacement kit designed to service MerCruiser engines equipped with a plastic one-piece...

      • SALE
        Sierra 18-3017 Water Pump Impeller Replaces 47-89984T3
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        $26.29
        $18.99
        $11.99

        Sierra 18-3017 Water Pump Impeller for Mercury Sierra replacement water pump impeller for Mercury and MerCruiser engines. This impeller fits MCM and outboard applications. All Sierra engine parts...

      • SALE
        Sierra 18-3217 Impeller Kit Replaces 46-96148A8
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        $39.29
        $28.29
        $21.99

        Sierra 18-3217 Water Pump Repair Kit for MerCruiser, Mercury For #1 Units thru S/N D494568 (Similar to #46-96148A5 without base or housing) Used on MerCruiser Stern Drives and Mercury Outboards...

      • Quicksilver 47-8M0100526 Water Pump Kit Image
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        $68.99
        $57.49

        Quicksilver 47-8M0100526 Water Pump Kit Quicksilver 8M0100526 Water Pump Repair Kit is a genuine 13-piece water pump repair kit designed for a wide range of Mercury and Mariner outboards as well as...

      • Sierra 18-0897 Exhaust Manifold Elbow Gasket Replaces 27-863724
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        $11.29
        $9.09

        Sierra 18-0897 Mercruiser Exhaust Elbow Gasket Sierra engine parts are designed to meet OEM specifications. The 18-0897 Exhaust Elbow Gasket is a standard cooling, restrictor gasket. Fits...

      • Sierra 18-3087 Impeller Replaces 47-59362T1
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        $32.09
        $23.09

        Sierra 18-3087 Water Pump Impeller for MerCruiser, Mercury For use on MerCruiser Bravo Sterndrives and Inboard engines with engine mounted sea water pumps (1999 & older)...

      • Sierra 18-3517 Water Pump Kit Replaces 46-60367A1
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        $62.49
        $44.99

        Sierra 18-3517 Water Pump Kit (Without Base) Sierra replacement water pump kit for Mercury and MerCruiser engines. Sierra high quality aftermarket parts are manufactured to meet or exceed OEM...

      • Mercury - Mercruiser 23-8M0214947 Thermostat Housing Sleeve Image
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        $14.99
        $13.99

        Mercury - Mercruiser 23-8M0214947 Thermostat Housing Sleeve Mercury Thermostat Sleeve is a direct replacement component designed for select MerCruiser sterndrive and inboard engines with standard...

      • Quicksilver 27-53045-1 Thermostat Housing Gasket for V-6 & V-8 Thumbnail Image
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        $4.99
        $4.49

        Quicksilver 27-53045-1 Thermostat Housing Gasket for V-6 & V-8 Thermostat housing gasket 530451 is for use on V6 and V8 MerCruiser sterndrive and inboard engines made by General Motors. It can also...

      • Sierra 18-3056 Water Pump Impeller Replaces 47-43026T2
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        $28.69
        $20.69

        Sierra 18-3056 Water Pump Impeller Sierra high-quality engine parts are designed to meet OEM specifications. For Alpha I-Generation 2 s/n D494569 & above MerCruiser Vazer For 30/40/45/50/60...

      • Mercruiser 47-59362T-1 Impeller 1999 & Older Image
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        $47.39
        $39.49

        Quicksilver 47-59362T-1 Impeller 1999 & Older  Quicksilver 59362T1 Water Pump Impeller is a genuine replacement impeller designed for select MerCruiser engines equipped with engine-mounted sea water...

      • Quicksilver OEM MerCruiser V8 GM Exhaust Manifold Gasket 27-33395
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        $11.99
        $9.99

        Quicksilver 27-33395 MerCruiser V8 Exhaust Manifold Gasket OEM-quality exhaust manifold gasket for V8 MerCruiser sterndrive and inboard engines built by General Motors. Designed to maintain proper...

      • Quicksilver 47-8M0104229 Impeller Kit for Brass Sea Water Pump Thumbnail Imagge
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        $53.99
        $44.99

        Mercruiser 47-8M0104229 Impeller Kit for Brass Sea Water Pump  OEM repair kit including impeller and O‑ring, specifically designed for MerCruiser V‑6 and V‑8 sterndrives. Fits 2000+ models and...

      • Quicksilver OEM MerCruiser V6/V8 1998-2001 Exhaust Elbow Gasket 27-863726
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        $22.19
        $18.49

        Quicksilver 27-863726 MerCruiser V6/V8 1998-2001 Exhaust Elbow Gasket  Full-flow, 4-slot exhaust elbow gasket designed for GM-based MerCruiser V6 and V8 sterndrive and inboard engines (1998–2001)...

      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 Wholesale Rewards Program for additional discounts on everything you need to keep your boat in top shape for your next adventure!