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      • Sierra 18-710-16-2 Hose Clamp 1-1/16"-1-1/2"
        $4.49
        $3.49

        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
        $28.99
        $20.49

        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. Features: Temperature Rating: 160°F For: Fresh water...

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      • Quicksilver 806490T Water Temperature Sender Thumbnail Image
        $41.99
        $34.99

        Quicksilver 806490T Water Temperature Sender Engine water temperature gauge sender 806490T is for use with MerCruiser sterndrive and inboard engines. See your owner's manual or service manual for specific applications and replacement instructions...

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      • Sierra 18-2761 Exhaust Tube Replaces 32-90949T
        $59.49
        $41.99

        Sierra 18-2761 MerCruiser 3" Exhaust Tube Sierra replacement exhaust tube for use with MerCruiser Stern Drives. Sierra engine parts are manufactured to meet or exceed OEM requirements. Features: Fits: MCM 470/485, 185, 205, 898, 228 & 260 I.D.:...

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      • Sierra 18-1998-1 Exhaust Manifold
        $440.99
        $308.99

        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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      • Sierra 18-0418 Exhaust Manifold Mounting Gasket Replaces 27-46820
        $21.49
        $14.99

        Sierra 18-0418 Exhaust Manifold Mounting Gasket Sierra high-quality engine parts are designed to meet OEM specifications. Features: Fits MCM/MIE GM V-8 (454, 482, 496, 502 & 504 CID) engines. Fits Volvo 7.4L, GL, GI, GSI, and 8.2L, GL, GI,...

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      • Sierra 18-15440 V-Belt
        $33.99
        $23.49

        Sierra 18-15440 Mercruiser, OMC, Volvo V-belt - Effective Length: 44" Top Width: 29/64" Sierra high-quality engine parts are designed to meet OEM specifications. High strength synthetic cords resist shockload Their low stretch properties assure...

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      • Mercury - Mercruiser 10-98794 Mounting Screw
        $3.99

        Mercury - Mercruiser 10-98794 Mounting Screw 3/8 - 16 x 1 in. 12 point flange head For mounting MCM thermostat housing, exhaust block off plate, and Alpha/Bravo top cover. 283009-7812918-3231 s/s from 10-98794

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      • Sierra 18-70935 Molded Hose Replaces 32-806856
        $39.49
        $29.99

        Sierra 18-70935 Molded Hose for Mercruiser Stern Drives Sierra replacement molded hose for Mercruiser Stern Drives. For oil cooler to thermostat housing. Fits 4.3L/LX, 5.0 L/LX, 5.7 L/LX & 350 Mag Interchangeable...

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      • Sierra 18-710-72-2 Hose Clamp 4-1/16"-5"
        $5.99
        $4.49

        Sierra 18-710-72-2 Stainless Steel Hose Clamp 4-1/16" to 5" Sierra hose clamp manufactured from marine grade 316 stainless steel. Diameter Size: 4-1/16" to 5" Std. No.: 072 Interchangeable with: Mercury...

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      • Sierra 18-3293 Impeller Key Replaces 28-8M0032833
        $6.49
        $5.99

        Sierra 18-3293 Impeller Key Sierra high-quality engine parts are designed to meet OEM specifications.  Use with: 47-43026 series long vane impeller Fits MCM Alpha One Gen II & various O/B applications Interchangeable...

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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!