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 18-3569 Thermostat Kit Replaces 803061T1
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        Sierra 18-3569 Thermostat Kit Replaces 803061T1

        $32.49
        $22.99

        Sierra 18-3569 Mercury Thermostat Kit  Sierra replacement thermostat kits are designed to meet OEM specifications. This kit fits various Mercury/Mariner 70-125 HP 2 cycle outboards (1987 and newer). Temperature rating: 120°F Kit...

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      • Mercury-Mercruiser 46-96148Q-8 Water Pump Kit
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        Quicksilver 46-96148Q-8 Water Pump Kit

        $68.39
        $56.99

        Mercury-Mercruiser 46-96148Q-8 Water Pump Kit - No Base OEM Mercury-Mercruiser Quicksilver water pump upper repair kit. Fits Mercury/Mariner 65 HP (4-cylinder) through V-6 outboards with short-vane impellers Fits Mercruiser I/R/MR/Alpha drives (s/n...

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      • Sierra 18-1957-2 Manifold Replaces 807078T10
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        Sierra 18-1957-2 Manifold Replaces 807078T10

        $363.49
        $232.99

        Sierra 18-1957-2 Mercruiser Manifold - Port & Starboard When in need of a Mercruiser manifold replacement, Wholesale Marine carries economical options to get you back on the water fast.  Sierra has engineered a manifold replacement kit that...

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      • Sierra 18-2733 Water Shutter Replaces 99370A2
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        Sierra 18-2733 Water Shutter Replaces 99370A2

        $31.99
        $22.49

        Sierra 18-2733 Mercruiser Water Shutter Sierra high-quality engine parts are designed to meet OEM specifications. Length: 3.175" Width: 2.5" Interchangeable with: GLM 89160 Mallory 9-42801 Mercruiser Stern...

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      • Sierra 18-15400 V-Belt Replaces 0311606
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        Sierra 18-15400 V-Belt Replaces 0311606

        $28.49
        $19.99

        V-belt for OMC, Volvo, Mercruiser 4 cyl Engines- Effective Length 40", Top Width 29/64" Details: High strength synthetic cords resist shockload failure. Their low stretch properties assure uniform performance over the life of the belt. The compression...

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      • Mercruiser 8M0113734 Water Circulating Pump Assembly
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        Quicksilver 8M0113734 Water Circulating Pump Assembly

        $171.59
        $142.99

        Mercruiser 8M0113734 Water Circulating Pump Assembly Genuine OEM Mercury - Mercruiser part. Application: 4.3L Alpha 4V EST - s/n 1G417302 thru 1G499999 350 Horizon Bobtail - s/n 1G700000 thru 1G799999 350 MPI Alpha/Bravo - s/n 1G700000 thru...

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      • Sierra 18-710-16-2 Hose Clamp 1-1/16"-1-1/2"
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        Sierra 18-710-16-2 Hose Clamp 1-1/16"-1-1/2"

        $3.49
        $2.99

        Sierra 18-710-16-2 Stainless Steel Hose Clamp 1-1/16" - 1-1/2" All components of the Sierra 18-710-16-2 Hose Clamp are manufactured from Marine Grade 316 stainless steel. Diameter Size: 11/16" to 1-1/2" Std #: 016 s/s from 18-7310

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      • Sierra 18-3649 Thermostat Replaces 8M0091470
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        Sierra 18-3649 Thermostat Replaces 8M0091470

        $26.49
        $18.99

        Sierra 18-3649 Thermostat Sierra 18-3649 Thermostat is a replacement part for Mercruiser Stern Drives. All Sierra engine parts are manufactured to meet or exceed OEM requirements. Temperature Rating: 160°F For: Fresh water cooling Fits: 1987...

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      • Sierra 18-1998-1 Exhaust Manifold
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        Sierra 18-1998-1 Exhaust Manifold

        $403.99
        $282.99

        Sierra 18-1998-1 Exhaust Manifold - Port & Starboard for Ford V8 Engines Fits Port and Starboard Sides. Universal Center Riser Manifold. Fits: Crusader 302 and 351 CID Engines Interceptor 221, 260 and 289 CID Engines Commander, Mercury, OMC,...

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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, Wholesale Marine has all you need.

      Wholesale Marine Keeps it Cool!

      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. Now 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 your MerCruiser cooling system. Ready to get started? Check out our easy-to-use Parts Selection tool to quickly get you exactly what you are searching for.

      For keeping that sterndrive, inboard, or tow sport engine cool come rain or shine, you can depend on Wholesale Marine to provide high quality 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!