7439

      Mercruiser Cooling System Product Listings

      • Sierra 18-3557 Thermostat Replaces 47594
        Quick view
        $38.79
        $32.19

        Sierra 18-3557 Thermostat Sierra replacement 143° thermostat for Chrysler/Force/US Marine, Johnson/Evinrude Outboards, Mercrusier Stern Drives, and Volvo Penta engines. Fits MCM GM in-line 6...

      • Sierra 18-1508 Thermostat Seal
        Quick view
        $1.19
        $0.97

        Sierra 18-1508 MerCruiser Thermostat Seal Replaces 25-8071341 This Sierra aftermarket thermostat seal is for use with MerCruiser V6/V8 GM engines that feature closed cooling. Application...

      • Sierra 18-70938 Exhaust Manifold Molded Hose
        Quick view
        $56.59
        $40.69

        Sierra 18-70938 Exhaust Manifold Molded Hose Sierra replacement exhaust manifold molded hose for Mercruiser Stern Drives. For thermostat housing to port exhaust manifold Fits MCM/MIE GM V06 &...

      • Sierra 18-3237 Water Pump Kit
        Quick view
        $62.89
        $45.29

        Sierra 18-3237 Mercruiser Water Pump Kit Sierra high-quality engine parts are designed to meet OEM specifications. For Bravo I, II, III (1988 & up). s/n B664190 & up. For Bravo drives with 1...

      • Cooler to Thermostat Housing Hose, V-6 & V-8 Mercury - Mercruiser 32-88794
        Quick view
        $38.99
        $33.99

        Cooler to Thermostat Housing Hose, V-6 & V-8 Mercury - Mercruiser 32-88794 1 1/4 in. I.D. Fits MCM/MIE V-6 and V-8 (305 & 350 cid) engines Replaces: Mallory 9-44086

      • Sierra 18-1908K Manifold Riser Spacer Kit Replaces 93320A13
        Quick view
        $553.59
        $398.59

        Sierra 18-1908K Manifold Riser Spacer Kit Features:  Packaged as a set, complete with mounting hardware Fits: MCM V-6 carb & TBI eng. w/ 2 piece exhaust manifolds (s/n 0M614999 & below) 3"...

      • Sierra 18-1956-3 MerCruiser 2.5L/3.0L Exhaust Manifold
        Quick view
        $698.19
        $502.69

        Sierra 18-1956-3 MerCruiser 2.5L/3.0L Exhaust Manifold Replaces 860235A04 This sierra exhaust manifold features a one piece design and is for use with MerCruiser 2.5L/3.0L engines. Used...

      • Sierra 18-3555 Thermostat Replaces 99155T2
        Quick view
        $27.69
        $19.89

        Sierra 18-3555 Mercruiser 160 Degree Thermostat Sierra replacement thermostat for Mercruiser Stern Drives Temperature Rating: 160°F Fits 1998 & newer GM V-6 & V-8 engines with closed...

      • Sierra 18-0885-1 Exhaust Elbow Gasket
        Quick view
        $10.99
        $7.99

        Sierra 18-0885-1 Exhaust Elbow Gasket For use on Mercruiser outboard engines Replaces:  27-48042 s/s from 18-0885

      • Sierra 18-15116 Serpentine Belt Replaces 57-861758Q
        Quick view
        $111.49
        $80.29

        Sierra 18-15116 Serpentine Belt Use with metal 5-3/4" dia. p/s pump pulley and engines with standard cooling. Sierra engine components are manufactured to meet or exceed OEM requirements. Length:...

      • Sierra 18-0164-9 Thermostat Housing Gasket (Priced Per Pkg Of 2)
        Quick view
        $4.69
        $3.69

        Sierra 18-0164-9 Thermostat Housing Gasket (Pkg Of 2) Sierra replacement thermostat housing gasket. Sold in Package of 2 each For Use on: OMC Sterndrive/Cobra 4 & 6 Cylinder Engines Yamaha...

      • Sierra 18-0488 Intake Gasket
        Quick view
        $72.09
        $51.89

        Sierra 18-0488 Intake Gasket Special Order est. 10 Days For use on Mercruiser I/O engines Fits:  MCM 350 Mag, 5.0L & 5.7L/LX Gen II (1996-up)  Interchangeable with:  Mercruiser Stern...

      • Quicksilver 807166A-3 Water Shutter Assembly Image
        Quick view
        $120.59
        $100.49

        Quicksilver 807166A3 Water Shutter For MerCruiser Sterndrive Exhaust Systems Quicksilver 807166A3 Water Shutter is designed to replace two offset plate water shutters and fits numerous MerCruiser...

      • Sierra 18-0956 Exhaust Manifold Gasket Replaces 27-68715
        Quick view
        $26.19
        $20.49

        Sierra 18-0956-1 Mercruiser, OMC, Volvo Exhaust Manifold Gasket For Ford 460 cid V-8 & 3.7L (4 cyl) Interchangeable with: Chrysler...

      • Sierra 18-3318 Water Pump Kit Replaces 47-59362Q08
        Quick view
        $98.19
        $70.69

        Sierra 18-3318 Water Pump Kit Special Order est. 10 Days For Use on Mercruiser I/O Engines Fits:  Plastic 1 and 2 piece sea water pump body Contains: Impeller 18-3087 Wear...

      • Quicksilver 140 Degree Thermostat Kit Mercury - Mercruiser 59078Q-3 Image
        Quick view
        $38.99
        $32.49

        Quicksilver 140 Degree Thermostat Kit Mercury - Mercruiser 59078Q-3 Quicksilver 59078Q3 Thermostat Kit is a genuine replacement thermostat designed for older MerCruiser GM inline 4-cylinder and...

      • Sierra 18-2833-9 Exhaust Elbow Gasket (Priced Per Pkg Of 2)
        Quick view
        $11.59
        $9.09

        Sierra 18-2833-9 MerCruiser Exhaust Elbow Gasket (Priced Per Pkg Of 2) These exhaust elbow gaskets are designed for use with MerCruiser engines. Application Info Fits MerCrusier V8 Ford...

      • Sierra 18-2909-9 Exhaust Manifold Gasket (Priced Per Pkg Of 2)
        Quick view
        $24.49
        $17.59

        Sierra 18-2909-9 Exhaust Manifold Gasket (Priced Per Pkg of 2) This exhaust manifold gasket set is an aftermarket product that meets or exceeds OEM requirements. Supersedes 18-2909 Use...

      • Manifold Assy, Mercury - Mercruiser 8m0080805
        Quick view
        $130.49
        $114.99

        Mercury-MerCruiser 8M0137703 Hydraulic Manifold Assembly The Mercury-MerCruiser 8M0137703 Hydraulic Manifold Assembly is a genuine OEM replacement hydraulic component for compatible Mercury and...

      • EMP 22-05154 Volvo/MerCruiser Drain Plug
        Quick view
        $11.99
        $9.99

        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,...

      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 Wholesale Rewards Program for additional discounts on everything you need to keep your boat in top shape for your next adventure!