Mercruiser Cooling System

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Parts Selection Guide

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      • Sierra 18-3568 Thermostat Kit Replaces 99155T1
        $26.99
        $18.99

        Sierra 18-3568 Thermostat Kit Sierra replacement thermostat kit for Mercruiser Stern Drives. Temperature Rating: 160° Fits GM V-6 & V-8 engines with closed cooling (1998 & newer) Kit Contains: (1) 18-3555 Thermostat (1) 18-1508...

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      • EMP 22-05154 Volvo/MerCruiser Drain Plug
        $10.55
        $8.79

        EMP 22-05154 Volvo/MerCruiser Drain Plug This drain plug is intended for use with Volvo, MerCruiser, & Indmar gearcases and meets all OEM requirements. Drain Plug Application: For Volvo all years, all model gearcases For MerCruiser 1975-2000...

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      • Sierra 18-15520 V-Belt Replaces 0912714
        $35.99
        $25.49

        OMC, Mercruiser V-Belt - Effective Length 52", Top Width 29/64" Replaces: Mallory 9-55001 Mercury 57-34359, 57-37619Q, 57-37619 OMC 0912714, 0509287, 0509288 Details: High strength synthetic cords resist shockload...

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      • Sierra 18-4258 Pipe Plug
        $5.99
        $4.99

        Sierra 18-4258 MerCruiser Pipe Plug Sierra stainless steel pipe plug with square drive. Note: Pipe sealant with Teflon is recommended for use on plug threads. Thread Size: 3/4" - 14 NPT Use With: 18-1949 Manifold Spacer 18-1984 Manifold...

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        Sierra 18-1992-1 Manifold Elbow Adapter
        $240.99
        $161.49

        Sierra 18-1992-1 Manifold Elbow Adapter Sierra high-quality engine parts are designed to meet OEM specifications. For 3" I.D. Exhaust Hose. 80° Interchangeable with: Barr 200087P Mallory 9-40120

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      • Sierra 18-2770 Exhaust Tube
        $96.49
        $67.49

        Sierra 18-2770 Exhaust Tube Sierra replacement exhaust tube for use on Mercruiser I/O Engines. Interchangeable with: Mallory 9-72804 Mercruiser Stern Drive 32-807458T Application: Mercruiser Stern Drive 262 MAG TBI...

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      • Sierra 18-1937 MerCruiser 3.7L Exhaust Manifold Elbow
        $362.99
        $275.99

        Sierra 18-1937 MerCruiser 3.7L Exhaust Manifold Elbow Replaces 98562A6 This Sierra exhaust manifold elbow is for use with MerCruiser 3.7L engines. Application Info: MerCruiser 4 Cyl 224 cu. in. 3.7L engine models 165, 170, 180, & 190 Use...

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      • Sierra 18-75125 Straight Hose 48" Replaces 32-848956
        $49.99
        $34.99

        Sierra 18-75125 Straight Hose 48" for Mercruiser, Volvo, and OMC Engines Sierra high-quality engine parts are designed to meet OEM specifications Length: 48" I.D.: 1-1/4" Fits MIE Ford V-8 (302 & 351 cid) engines. Also fits MCM/MIE GM...

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      • EMP 46-13159 MerCruiser Water Pump Kit
        $95.99
        $79.99

        EMP 46-13159 MerCruiser Water Pump Kit This EMP replacement water pump kit is for use with MerCruiser engines. Water Pump Application Information: For MercCruiser V8 200-575HP engines, Alpha One, Alpha Gen II, Bravo, SSM, & Dry Six drive water...

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      • Sierra 18-0183-1 Exhaust Manifold Gasket
        $16.99
        $12.99

        Sierra 18-0183-1 Exhaust Manifold Gasket for Mercruiser, OMC Sierra Exhaust Manifold Gasket for use on Mercruiser and OMC Stern Drives. Fits MCM/MIE Ford V-8 engines Use With: 18-1996 Manifold 18-1998-1 Manifold 18-1962-1...

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      • Sierra 18-15101 Serpentine Belt
        $111.99
        $78.49

        Sierra 18-15101 Mercruiser Serpentine Belt Length: 76.5" Width: 13/16" Interchangeable with: Mercruiser Stern Drive 57-863876 4 57-862086A1 57-862086 57-8620861 57-865615004 57-865615Q04

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      • Sierra 18-70948 Molded Hose
        $52.99
        $36.99

        Sierra 18-70948 Mercruiser Molded Hose Sierra 18-70948 Molded Hose is for cooler to thermostat housing. Sierra high-quality replacement engine parts are designed to meet OEM quality. Fits MCM/MIE V-6 & V-8 (305, 350 & 377 cid) engines...

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      • Mercruiser 32-87117-1 Exhaust Manifold Hose
        $42.99
        $37.49

        Mercruiser 32-87117-1 Exhaust Manifold Hose  Genuine OEM Mercury - Mercruiser replacement hose. 1" I.D. at one end; 13/16" I.D. at other end of hose Fits: 4.3L/LX and MCM/MIE V-8 (305 & 350 cid)...

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      • Sierra 18-1970-2 Riser Elbow
        $299.99
        $209.99

        Sierra 18-1970-2 Riser Elbow Sierra Marine 18-1970-2 is a replacement riser elbow for V-6 and V-8 applications. Sierra aftermarket engine parts are manufactured to meet or exceed OEM requirements. Fits: V-6 & V-8 Applications 15° (3" O.D...

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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!