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      • Sierra 18-15102 Serpentine Belt Replaces 57-865615Q06
        $118.49
        $89.99

        Sierra 18-15102 Serpentine Belt Sierra replacement serpentine belt for Mercruiser V8 Engines. Sierra engine components are manufactured to meet or exceed OEM requirements. Length: 105" Width: 13/16" Interchangeable...

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      • Exhaust Tube, Mercury - Mercruiser 32-44348001
        $86.39
        $71.99

        Quicksilver 44348001 Exhaust Bellows Tube For MerCruiser 120, 140, V6 & V8 Sterndrive Engines Quicksilver OEM exhaust bellows tube designed for MerCruiser 120, 140, and select GM V6 and V8 sterndrive engines. Helps direct exhaust flow while...

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      • Sierra 18-3116 Water Pump Housing Replaces 46-96148T1
        $48.49
        $33.99

        Sierra 18-3116 Water Pump Housing for Mercury, Mercruiser Sierra high-quality replacement engine parts are designed to meet OEM specifications.  For use with 18-3109 Water Tube Guide and 18-3110 Water Pump Housing Brushing Interchangeable...

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      • Sierra 18-8533 Exhaust Manifold Mounting Kit
        $30.99
        $21.49

        Sierra 18-8533 Mercruiser Exhaust Manifold Mounting Kit Sierra high-quality engine parts are designed to meet OEM specifications. For Mercruiser GM V6 229 and 262cu in. (Models 185 and 205). Used with Manifold 18-1952-1. Interchangeable...

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      • Image Coming Soon
        $595.19
        $495.99

        Quicksilver OEM MerCruiser 4.3L Dry Joint Exhaust Manifold 864612T01 This OEM Mercruiser 4.3L exhaust manifold is for GM V6 engines made from 2022 to the present. Dry joint manifolds essentially prevent water from entering the cylinders if there is a...

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      • Quicksilver 57-865615Q04 1941 mm Belt Serpentine Image
        $126.59
        $105.49

        Quicksilver 57-865615Q04 1941 mm Belt Serpentine 1941 mm Belt Serpentine, Mercury - Mercruiser 57-865615Q04 Product Features Serpentine belt compatible with select MerCruiser engines Replaces the original belt installed by MerCruiser Meets the...

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      • Sierra 18-4264 Pipe Plug
        $4.99
        $3.99

        Sierra 18-4264 Pipe Plug Sierra high-quality engine parts are designed to meet OEM specifications. For use on Mercruiser Stern Drives and Mercury Marine engines. Using Pipe Sealant with Teflon is recommended for use on plug threads. Thread Size:...

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      • Sierra 1985-2002 MerCruiser V6 GM Exhaust Manifold Kit
        $1,299.99
        $795.99

        Sierra 1985-2002 MerCruiser V6 GM Exhaust Manifold Kit Boat exhaust manifolds are an important part of your boat and maintaining, repairing, or replacing these parts is important to keep your boat running smoothly and avoid additional costly repairs...

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      • EMP 47-01814 Mercury Mariner Impeller
        $22.07
        $18.39

        EMP 47-01814 Mercury Mariner Impeller This impeller is intended for use on Mercury Mariner, Honda, and Force engines and meets all OEM requirements. Specification: ID: 22.4mm OD: 89mm W: 32.5mm 6 Blades Uses Key 28-32833 Impeller...

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      • Sierra 18-8502 Exhaust Manifold Mounting Kit
        $73.49
        $51.49

        Sierra 18-8502 Exhaust Manifold Mounting Kit for V-8 Small Block Sierra high-quality engine parts are designed to meet OEM specifications. OMC GM Small Block V8 305-350cu.in. (1979-89)  OMC/Volvo...

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      • Sierra 18-1842 MerCruiser V6 Dry Join Exhaust Manifold
        $460.49
        $322.49

        Sierra 18-1842 MerCruiser V6 Dry Join Exhaust Manifold The Sierra V6 Dry Join Exhaust Manifold helps ensure water does not enter the cylinders in the case of a gasket failure. Water is transferred from the manifold to the riser externally. Can be used...

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      • Sierra 18-3652 Thermostat Kit
        $33.49
        $23.49

        Sierra 18-3652 Mercruiser 160 Degree Thermostat Kit Sierra high-quality replacement thermostat kit for Mercruiser Stern Drives. 160 Degree Temperature Rating Kit Contains: (1) 18-2555 Thermostat Cover Gasket (1) 18-2843 Thermostat Gasket (1)...

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      • EMP 46-46501 Mercury MerCruiser Water Pump Kit
        $70.07
        $58.39

        EMP 46-46501 Mercury MerCruiser Water Pump Kit 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 various hardware...

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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!