Mercruiser Cooling System

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Parts Selection Guide

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      • Sierra 18-2833-9 Exhaust Elbow Gasket (Priced Per Pkg Of 2)
        $10.49
        $7.99

        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 engines Fits MerCruiser MCM 120 (1993-Present), 140/3.0L, 470,...

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      • Sierra 18-1937 MerCruiser 3.7L Exhaust Manifold Elbow
        $362.99
        $275.99

        Sierra 18-1937 MerCruiser 3.7L Exhaust Manifold Elbow Replaces 98562A6 This Sierra exhaust manifold elbow is for use with MerCruiser 3.7L engines. Application Info: MerCruiser 4 Cyl 224 cu. in. 3.7L engine models 165, 170, 180, & 190 Use...

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      • Sierra 18-75125 Straight Hose 48" Replaces 32-848956
        $49.99
        $34.99

        Sierra 18-75125 Straight Hose 48" for Mercruiser, Volvo, and OMC Engines Sierra high-quality engine parts are designed to meet OEM specifications Length: 48" I.D.: 1-1/4" Fits MIE Ford V-8 (302 & 351 cid) engines. Also fits MCM/MIE GM...

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      • Sierra 18-0183-1 Exhaust Manifold Gasket
        $16.99
        $12.99

        Sierra 18-0183-1 Exhaust Manifold Gasket for Mercruiser, OMC Sierra Exhaust Manifold Gasket for use on Mercruiser and OMC Stern Drives. Fits MCM/MIE Ford V-8 engines Use With: 18-1996 Manifold 18-1998-1 Manifold 18-1962-1...

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      • Sierra 18-15101 Serpentine Belt
        $111.99
        $78.49

        Sierra 18-15101 Mercruiser Serpentine Belt Length: 76.5" Width: 13/16" Interchangeable with: Mercruiser Stern Drive 57-863876 4 57-862086A1 57-862086 57-8620861 57-865615004 57-865615Q04

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      • Sierra 18-70948 Molded Hose
        $52.99
        $36.99

        Sierra 18-70948 Mercruiser Molded Hose Sierra 18-70948 Molded Hose is for cooler to thermostat housing. Sierra high-quality replacement engine parts are designed to meet OEM quality. Fits MCM/MIE V-6 & V-8 (305, 350 & 377 cid) engines...

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      • Quicksilver 27-858524 Water Pump Gasket Image
        $3.49
        $2.99

        Quicksilver 27-858524 Water Pump Gasket Quicksilver Water pump gasket 858524 is for use on MerCruiser 1, R, MR and Alpha One sterndrives (serial No. 2495186-0D469858), Mercury and Mariner 65hp (4-cylinder) through V6 outboards with short-vane...

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      • Sierra 18-0342 Power Trim Hose Connector Plate Gasket
        $1.99
        $1.49

        Sierra 18-0342 Power Trim Hose Connector Plate Gasket Sierra 18-0342 Power Trim Hose Connector Plate Gasket is a replacement part for Mercruiser Stern Drives. Interchangeable with: Barr MC472747644 GLM 31470 Mercruiser Stern...

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      • Sierra 18-0462 Carb Mounting Gasket
        $9.99
        $7.99

        Sierra 18-0462 Carburetor Mounting Gasket Sierra replacement carburetor mounting gasket for use with Mercruiser Stern Drive. Interchangeable with: GLM 31540 Mallory 9-61003 Mercruiser Stern Drive 27-48399

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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

        Exhaust Tube, Mercury - Mercruiser 32-44348001 4 in. I.D. x 4 1/4 in. length Fits MCM 120, 140,  and GM V-6 and V-8 engines Replaces: GLM 89120 Mallory 9-72805 Sierra 18-2748

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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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      • Mercruiser V6 Dry Joint Exhaust Manifold
        $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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      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!