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guidebook

Parts Selection Guide

Find the parts you need

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  • 1) Engine Manufacturer:
  • 2) Part Type:
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Prop Selection Guide

Find the right prop for your boat

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  • Engine Horsepower:
  • Engine Model:
  • Engine Year:
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Mercruiser Water Pumps & Impellers

Mercruiser Thermostats & Gaskets

Mercruiser Water Circulating Pumps

Mercruiser Water Shutter & Exhaust Tubes

Mercruiser Exhaust Manifolds

Mercruiser Hoses

Mercruiser Serpentine Belts

Mercruiser V-Belts

Mercruiser Thermostat Housing

      Mercruiser Cooling System

      • Sierra 18-15440 V-Belt Replaces 57-93658Q
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        Sierra 18-15440 V-Belt Replaces 57-93658Q

        $31.99
        $22.49

        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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      • Sierra 18-1950-1 Exhaust Manifold Replaces 77234A2
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        Sierra 18-1950-1 Exhaust Manifold Replaces 77234A2

        $630.99
        $441.49

        Sierra 18-1950-1 Mercruiser Manifold - Port - with Mounting Package Fits most Mercruiser GM Small Blocks with End Risers. Supplied with mounting package Port Side Applications: GM 228 S/N 4765100-6218461 GM 250 S/N 4768860-4908849 GM 255 S/N...

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      • Sierra 18-1997-1 Exhaust Manifold
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        Sierra 18-1997-1 Exhaust Manifold

        $381.49
        $266.99

        Universal Exhaust Manifold with Mounting Package by Sierra For Port & Starboard Sides. Universal Center Riser Manifold. Fits: Chriscraft 283, 302, 307, and 350 CID Engines. Crusader 283 and 327 CID Engines thru 1964; 305, 307 and 350 CID Engines...

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      • Sierra 18-5896 Temperature Sender Replaces 12415
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        Sierra 18-5896 Temperature Sender Replaces 12415

        $31.99
        $22.49

        Sierra 18-5896 Mercury Temperature Sender Sierra replacement engine parts are designed to meet OEM specifications.  Sender Code "D" Thread Size: 1/8" - 27 NPT Range: 240° Terminal Type: 10-32 stud Interchangeable...

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      • Sierra 18-70934 Molded Hose
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        Sierra 18-70934 Molded Hose

        $63.99
        $44.49

        Sierra 18-70934 Mercruiser Molded Hose Sierra high-quality engine parts are designed to meet OEM specifications. Fits MCM/MIE GM V-8 (427, 454 & 502 CID) engines. Interchangeable with: Mallory 9-44051 Mercruiser Stern...

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      • Sierra 18-70958 Molded Hose
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        Sierra 18-70958 Molded Hose

        $60.99
        $42.49

        Sierra 18-70958 Molded Hose Sierra replacement molded hose for Mercruiser Stern Drives. For transom to oil cooler Fits MCM GM V-8 (305, 350 & 454 CID) engines Interchangeable with: Mallory 9-44074 Mercruiser Stern...

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      • Sierra 18-3160 Brass Sea Water Pump
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        Sierra 18-3160-1 Brass Sea Water Pump

        $364.99
        $273.99

        Sierra 18-3160-1 Brass Sea Water Pump for Mercruiser Sierra high-quality marine engine parts are designed to meet OEM specifications. Use with 18-3016-1 Impeller Interchangeable with: Mercruiser Stern Drive 46-862914A13 8M0118062 s/s...

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      • Sierra 18-70925 Molded Hose Replaces 32-160211
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        Sierra 18-70925 Molded Hose Replaces 32-160211

        $33.99
        $23.99

        Sierra 18-70925 Molded Hose for Mercruiser Stern Drives. Replacement molded hose for Mercruiser Stern Drives. For Thermostat Cover to Port Manifold. Fits MCM/MIE V-6 & V-8 (305 & 350 cid) engines. Interchangeable...

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      • Sierra 18-15460 V-Belt Replaces 57-48120Q1
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        Sierra 18-15460 V-Belt Replaces 57-48120Q1

        $33.99
        $25.99

        Mercruiser, OMC and Volvo V-Belt - Effective Length: 46" Top Width: 29/64" Replaces: Mercury - 57-48120A-1, 57-48120Q 1 OMC - 0310953, 0909971 Volvo - 829207, 966920 Mallory 9-55002 Redline RL15460 Details: High strength synthetic cords...

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      • Sierra 18-3646 Thermostat Kit Replaces 807252Q3
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        Sierra 18-3646 Thermostat Kit Replaces 807252Q3

        $35.49
        $24.99

        Sierra 18-3646 Mercruiser 140 Degree Thermostat Kit Sierra high-quality replacement engine parts are designed for OEM specifications. For 1982 & older Ford & GM V-8 engines with standard cooling and 1996 & older hi-performance models. Fits...

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      • Sierra 18-75100 Molded Hose 48" Replaces 32-89749
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        Sierra 18-75100 Molded Hose 48" Replaces 32-89749

        $32.99
        $22.99

        Sierra 18-75100 OMC Molded Straight Hose Sierra high-quality engine parts are designed to meet OEM specifications. For thermostat housing to exhaust manifolds and elbows. Length: 48" I.D.: 1" Interchangeable with: Johnson/Evinrude...

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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.