Mercruiser Cooling System

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Parts Selection Guide

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Prop Selection Guide

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      • Quicksilver 817275Q05 Water Pump Rebuild Kit for Mercruiser
        $196.19
        $163.49

        Quicksilver 817275Q05 Water Pump Rebuild Kit for Mercruiser Genuine OEM Mercury-Mercruiser part. Quicksilver water pump rebuild kit for Mercruiser stern drives. Fits: Alpha One Gen II drives and Vazer Alpha One Gen II s/n 0D469859 and up Vazer...

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      • Sierra 18-0928-1-9 Manifold End Cap Gasket (2 Pk)
        $21.49
        $14.99

        Sierra 18-0928-1-9 Manifold End Cap Gasket (2 Pk) Sierra replacement manifold end cap gasket used on Mercruiser engines. Fits: MCM/MIE 120/2.5L, 140/3.0L, 165 (I/L 6 cyl.), 470, 898, 228 & 260 Sold as a pack of 2 Interchangeable...

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      • Sierra 18-710-20-2 Hose Clamp 13/16" - 1-3/4"
        $3.99
        $2.99

        Sierra 18-710-20-2 Hose Clamp 13/16" - 1-3/4" Material: Marine Grade 316 stainless steel Diameter: 13/16" to 1 3/4" Std #: 020 Sold individually Interchangeable with: Mercruiser Stern Drive 54-32780 54-32880 54-815504220

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      • Sierra 18-15550 V-Belt Replaces 57-13458Q
        $36.49
        $29.49

        Sierra 18-15550 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 compound...

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      • Sierra 18-3552 Thermostat Replaces 76270T
        $25.99
        $17.99

        Sierra 18-3552 Thermostat for Mercruiser and Crusader Engines Sierra replacement thermostat for Crusader and Mercruiser engines. Temperature Rating: 160°F For: Fresh Water Cooling Fits: 470/485 models (s/n 6218036 and below) Interchangeable...

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      • Sierra 18-0893 Water Pump Back-In Plate Gasket
        $0.89
        $0.72

        Water Pump Back-in Plate Gasket for 4.3/5.0/5.7L GM by Sierra - Special Order est. 10 Days For use on Mercruiser I/O, OMC Sterndrive/Cobra, & Volvo Penta, GM 4.3L, 5.0L & 5.7L, engines Replaces:   Mercury 27-35380 OMC 3850595...

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      • Sierra 18-70955 Molded Hose
        $44.49
        $30.99

        Sierra 18-70955 Molded Hose Molded Hose for Mercruiser V8 (305, 350 & 454 CID) used for thermostat cover to exhaust elbow applications. Fits: MC200/230 (1987) 5.0L Alpha (1988-95) 5.0LX Alpha (1988-95) MC260 (1987) 350 Mag Alpha (1987-95) 5...

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      • Sierra 18-0403 Intake Gasket Kit
        $107.99
        $75.49

        Sierra 18-0403 Intake Gasket Kit - Special Order est. 10 Days Interchangeable with: Mallory 9-61217 Mercruiser Stern Drive 27-52571 27-61782 27-805722A1 27-812712  

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      • Sierra 18-2564-1 Impeller Gasket
        $16.49
        $11.49

        Sierra 18-2564-2 Impeller Gasket Sierra high-quality engine parts are designed to meet OEM specifications. For use on Chrysler/Force/US Marine, Honda Outboards, Mercruiser Stern Drives, and Mercury Marine engines. Interchangeable...

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      • EMP 46-46502 Mercury MerCruiser Water Pump Kit
        $120.95
        $100.79

        EMP 46-46502 Mercury MerCruiser Water Pump Kit with Housing This EMP replacement water pump kit is for use with Mercury and MerCruiser engines. This boat water pump kit comes with a rubber coated wear plate, stainless steel housing, impeller, and...

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      • EMP 47-00001 Mercury MerCruiser Impeller
        $20.05
        $16.71

        EMP 47-00001 Mercury MerCruiser Impeller This impeller is intended for use on Mercury, MerCruiser, and Force engines and meets all OEM requirements. Specification: ID: 22.3mm OD: 60mm W: 33.8mm 6 Blades Uses Key 28-23834 Impeller...

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      • EMP 61-01520 MerCruiser Engine Exhaust Bellow
        $51.83
        $43.19

        EMP 61-01520 MerCruiser Engine Exhaust Bellow This exhaust boot is intended for use with MerCruiser assemblies and meets all OEM requirements. Exhaust Bellow Application: For 1987-2009 Alpha One, Alpha Gen II, Bravo & SSM bell housing...

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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!