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guidebook

Parts Selection Guide

Find the parts you need

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Prop Selection Guide

Find the right prop for your boat

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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

      Mercruiser Cooling System

      • Mercruiser 805218T Coolant Temp Sensor
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        Quicksilver 805218T Coolant Temp Sensor

        $69.59
        $57.99

        Mercruiser 805218T MCM/MIE EFI Coolant Temperature Sensor Assy Used for temperature gauge. Fits MCM/MIE EFI models Replaces: Mallory 9-42402 Redline RL7600 Sierra 18-7600

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      • Sierra 18-15101 Serpentine Belt
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        Sierra 18-15101 Serpentine Belt

        $104.49
        $72.99

        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 18-15520 V-Belt Replaces 0912714
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        Sierra 18-15520 V-Belt Replaces 0912714

        $34.99
        $24.49

        OMC, Mercruiser V-Belt - Effective Length 52", Top Width 29/64" Replaces: Mallory 9-55001 Mercury 57-34359, 57-37619Q, 57-37619 OMC 0912714, 0509287, 0509288 Details: High strength synthetic cords resist shockload...

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      • Sierra 18-70948 Molded Hose
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        Sierra 18-70948 Molded Hose

        $50.99
        $35.49

        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 57-865615Q03 Serpentine Belt
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        Quicksilver 57-865615Q03 Serpentine Belt

        $161.99
        $134.99

        Quicksilver 57-865615Q03 Serpentine Belt Genuine OEM Mercury-Mercruiser part. Direct replacement serpentine belt for Mercruiser Stern Drives. Belt is 704 mm long and is easy to install. Fits: 350 MAG MPI Alpha/Bravo 350 MAG MPI Alpha/Bravo EC 350...

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      • Sierra 18-1970-2 Riser Elbow
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        Sierra 18-1970-2 Riser Elbow

        $291.49
        $203.99

        Sierra 18-1970-2 Riser Elbow Sierra Marine 18-1970-2 is a replacement riser elbow for V-6 and V-8 applications. Sierra aftermarket engine parts are manufactured to meet or exceed OEM requirements. Fits: V-6 & V-8 Applications 15° (3" O.D...

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      • Sierra 18-2770 Exhaust Tube
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        Sierra 18-2770 Exhaust Tube

        $92.49
        $64.99

        Sierra 18-2770 Exhaust Tube Sierra replacement exhaust tube for use on Mercruiser I/O Engines. Interchangeable with: Mallory 9-72804 Mercruiser Stern Drive 32-807458T Application: Mercruiser Stern Drive 262 MAG TBI...

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      • Sierra 18-75125 Straight Hose 48" Replaces 32-848956
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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 18-32888 Water Pump Repair Kit
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        Sierra 18-32888 Water Pump Repair Kit

        $130.99
        $91.99

        Sierra 18-32888 Water Pump Repair Kit The Sierra 18-32888 Water Pump Repair Kit fits 350 MAG MPI, 4.3L MPI, 496 MAG, 5.0L MPI, 5.7L MPI, 6.2L MPI, 8.1L MAG. Fits Mercruiser using brass seawater pump 46-862914A13 (18-3160-1). Contains: (1) 18-3016-1...

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      • Mercruiser 32-87117-1 Exhaust Manifold Hose
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        Mercruiser 32-87117-1 Exhaust Manifold Hose

        $42.99
        $37.49

        Mercruiser 32-87117-1 Exhaust Manifold Hose  Genuine OEM Mercury - Mercruiser replacement hose. 1" I.D. at one end; 13/16" I.D. at other end of hose Fits: 4.3L/LX and MCM/MIE V-8 (305 & 350 cid)...

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      • Sierra 18-0183-1 Exhaust Manifold Gasket
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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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      • Mercruiser Alpha One Gen II Water Pump Rebuild Kit 817275K05
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        Mercury - Mercruiser 817275K05 Water Pump Rebuild Kit

        $196.19
        $163.49

        Mercury - Mercruiser 817275K05 Water Pump Upper Rebuild Kit Genuine OEM Mercury-Mercruiser part. Rebuild kit contains all required components to replace the water pump impeller and the upper pump housing. Fits all Mercruiser Alpha One Gen II drives...

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      • Sierra 18-1937 Exhaust Manifold Elbow
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        Sierra 18-1937 Exhaust Manifold Elbow

        $381.99
        $290.49

        Sierra 18-1937 Exhaust Manifold Elbow For engines with aluminum exhaust manifolds.   Use With: 18-0881: Exhaust Elbow Gasket 18-8530: Exhaust Elbow Mounting Kit Replaces GLM 51180 Mallory 9-40551 Mercruiser Stern Drive 98562A6 Osco 8561

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      • Sierra 18-3116 Water Pump Housing Replaces 46-96148T1
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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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      Mercruiser OEM Engine Parts Finder

      Mercruiser Cooling System

      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.

      We are Keeping 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 boats 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 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. We have everything you need to run preventative maintenance on your vessel and to upgrade your older parts. Water pumps, impellers, thermostats, gaskets, circulation pumps, shutter & 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. Peruse our selection today and give us a call with your questions at (877) 388-2628.