Mercruiser Cooling System

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Parts Selection Guide

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Prop Selection Guide

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Mercruiser Water Pumps & Impellers

Mercruiser Water Pumps & Impellers
Mercruiser Thermostats & Gaskets

Mercruiser Thermostats & Gaskets
Mercruiser Water Circulating Pumps

Mercruiser Water Circulating Pumps
Mercruiser Water Shutter & Exhaust Tubes

Mercruiser Water Shutter & Exhaust Tubes
Mercruiser Exhaust Manifolds

Mercruiser Exhaust Manifolds
Mercruiser Hoses

Mercruiser Hoses
Mercruiser Serpentine Belts

Mercruiser Serpentine Belts
Mercruiser V-Belts

Mercruiser V-Belts
Mercruiser Thermostat Housing

Mercruiser Thermostat Housing
      • Sierra 18-4226 Drain Plug Replaces 22-806608A02
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        Sierra 18-4226 Drain Plug Replaces 22-806608A02

        $3.49

        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 manifolds Comes complete with o-ring Interchangeable...

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      • Sierra 18-3214 Impeller Kit Replaces 47-8M0100526
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        Sierra 18-3214 Impeller Kit Replaces 47-8M0100526

        $30.49

        Sierra 18-3214 Impeller Kit for Mercury A boat impeller is a part that is primarily made from rubber, which projects as a series of vanes that are molded around a metal hub. The tips of these flexible vanes wear down over time through use or if the boat...

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      • Sierra 18-3320 Water Pump Kit
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        Sierra 18-3320 Water Pump Kit

        $47.49

        Sierra 18-3320 Water Pump Kit Sierra replacement water pump kit for Mercruiser engines. Sierra high quality aftermarket parts are manufactured to meet or exceed OEM requirements. For MR/Alpha l Units S/N 6854393-0D469858 Includes: Water Pump...

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

        $107.99

        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 housing sea water pump. Sierra aftermarket engine...

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      • Sierra 18-1953-2 Exhaust Manifold
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        Sierra 18-1953-2 MerCruiser V8 1983-2002 Exhaust Manifold

        $160.99

        Sierra 18-1953-2 MerCruiser V8 1983-2002 Exhaust Manifold Sierra exhaust manifolds are designed as OEM replacements and meet or exceed the manufacturer’s requirements. Sierra replacement manifolds are fully interchangeable with the OEM products...

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      • Sierra 18-3017 Water Pump Impeller Replaces 47-89984T3
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        Sierra 18-3017 Water Pump Impeller Replaces 47-89984T3

        $15.99

        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 are manufactured to meet or exceed OEM requirements...

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      • Sierra 18-3217 Impeller Kit Replaces 46-96148A8
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        Sierra 18-3217 Impeller Kit Replaces 46-96148A8

        $24.99

        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. This kit contains all the components needed to properly...

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

        $37.99

        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 requirements. Fits: Mercury/Mariner 65 HP (4 cylinder)...

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      • Water Pump Kit, Mercury - Mercruiser 47-43026Q06
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        Quicksilver 47-8M0100526 Water Pump Kit

        $54.99

        Mercury - Mercruiser 47-8M0100526 Water Pump Kit Fits: 40/45/50/60 Fourstroke BigFoot 60 (3cyl) Bigfoot 75 - 125 (all 3 & 4 cylinder 0A996142 & above) 75, 90, 115 Fourstroke V-200/225/250 (3.0L) Mercruiser Alpha One Gen II...

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      • Mercruiser 47-59362T-1 Impeller 1999 & Older
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        Quicksilver 47-59362T-1 Impeller 1999 & Older

        $36.99

        Mercruiser 47-59362T-1 Impeller 1999 & Older  Fits Mercruiser engines with engine mounted sea water pumps (1999 & Older) Replaces: GLM 89740 Mallory 9-45375 OMC 0775517 Redline RL3087 Sie-18-3087  

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

        $17.49

        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 4-stroke Bigfoot, 60 (3 cyl.) Bigfoot, 75-125 (all 3...

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      • Sierra 18-2748 Exhaust Boot Replaces 32-44348001
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        Sierra 18-2748 Exhaust Boot Replaces 32-44348001

        $29.99

        Sierra 18-2748 Mercruiser 4" Upper Exhaust Boot Sierra high-quality engine parts are designed to meet OEM specifications. For use on Mercruiser Stern Drive engines. Upper Tube: 4" Fits MCM 120, 140 & GM V-6 & V-8 engines Use with:...

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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!