Mercruiser Cooling System

Sierra 18-4226 MerCruiser Blue Plastic Drain Plug This Sierra 18-4226 drain plug is widely used for MerCruiser V4, V6 and V8 marine engines. Fits MerCruiser cylinder blocks and exhaust manifolds Comes complete with O-ring Interchangeable...

Sierra 18-3214 Impeller Kit for Mercury Restore proper water pump function with the Sierra 18-3214 impeller kit for MerCruiser Alpha One Gen II systems (D494569 and above). Featuring rubber vanes around a metal hub, this impeller resists wear from heat...

Sierra 18-1976-2 MerCruiser V6/V8 GM 2002 & Older Manifold Elbow Replaces 807988A03 Unlike automotive engines, all marine inboards have exhaust risers that feature a water induction elbow. Located behind the engine’s coolant reservoir, the...

Sierra 18-1953-2 MerCruiser V8 1983-2002 Exhaust Manifold The Sierra 18-1953-2 is a direct OEM replacement exhaust manifold designed for MerCruiser GM Small Block V8 engines from 1983 to 2002, including 305, 350, and 377 CID models. This complete kit...

Sierra 18-3150 MerCruiser Bravo Water Pump Kit The Sierra 18-3150 Water Pump Kit is for use on all MerCruiser Bravo and TRS Sterndrives and Inboard Marine engines. Can be used to replace the 2 piece housing sea water pump. Sierra aftermarket engine...

Sierra 18-3320 Water Pump Kit Sierra replacement water pump kit for Mercruiser engines. Sierra high quality aftermarket parts are manufactured to meet or exceed OEM requirements. For MR/Alpha l Units S/N 6854393-0D469858 Includes: Water Pump...

Sierra 18-3599-2 Water Circulating Pump Sierra high-quality engine parts are designed to meet OEM specifications. Fits Both Standard and Counter Rotating Engines. Features: Fits GM V-6 (s/n 1A063239 & below) & V-8 (305, 350 & 377 CID)...

Sierra 18-3217 Water Pump Repair Kit for MerCruiser, Mercury For #1 Units thru S/N D494568 (Similar to #46-96148A5 without base or housing) Used on MerCruiser Stern Drives and Mercury Outboards. This kit contains all the components needed to properly...

Sierra 18-3017 Water Pump Impeller for Mercury Sierra replacement water pump impeller for Mercury and MerCruiser engines. This impeller fits MCM and outboard applications. All Sierra engine parts are manufactured to meet or exceed OEM requirements...

Quicksilver 46-807151A14 Body Impeller Kit Fits plastic one piece body sea water pump Replaces: Pro Marine - 64151 Sierra - 18-3150 Redline - RL3150  

Sierra 18-0897 Mercruiser Exhaust Elbow Gasket Sierra engine parts are designed to meet OEM specifications. The 18-0897 Exhaust Elbow Gasket is a standard cooling, restrictor gasket. Fits 1981-1997 GM V-6 & V-8 engines with center rise outlet...

Sierra 18-3087 Water Pump Impeller for MerCruiser, Mercury For use on MerCruiser Bravo Sterndrives and Inboard engines with engine mounted sea water pumps (1999 & older)...

Sierra 18-3517 Water Pump Kit (Without Base) Sierra replacement water pump kit for Mercury and MerCruiser engines. Sierra high quality aftermarket parts are manufactured to meet or exceed OEM requirements. Fits: Mercury/Mariner 65 HP (4 cylinder)...

Mercury - Mercruiser 23-8M0214947 Thermostat Housing Sleeve Fits most Mercruiser V8 & V6 Engines with the one piece thermostat housing Supersedes: 23-806922

Mercury - Mercruiser 47-8M0100526 Water Pump Kit Complete water pump repair kit which is precisely designed and produced to meet Mercury Marine equipment manufacturer specification. Engineered for durability and provides higher flow rates and cooling...

Quicksilver 27-53045-1 Thermostat Housing Gasket for V-6 & V-8 Thermostat housing gasket 530451 is for use on V6 and V8 MerCruiser sterndrive and inboard engines made by General Motors. It can also be used on Outboard Marine Corporation and Volvo...

Sierra 18-3056 Water Pump Impeller Sierra high-quality engine parts are designed to meet OEM specifications. For Alpha I-Generation 2 s/n D494569 & above MerCruiser Vazer For 30/40/45/50/60 4-stroke Bigfoot, 60 (3 cyl.) Bigfoot, 75-125 (all 3...

Quicksilver 47-59362T-1 Impeller 1999 & Older  Fits Mercruiser engines with engine mounted sea water pumps (1999 & Older) Replaces: GLM 89740 Mallory 9-45375 OMC 0775517 Redline RL3087 Sie-18-3087  

Quicksilver 27-33395 MerCruiser V8 Exhaust Manifold Gasket OEM-quality exhaust manifold gasket for V8 MerCruiser sterndrive and inboard engines built by General Motors. Designed to maintain proper sealing and engine performance. Refer to your...

Sierra 18-2748 MerCruiser 4" Upper Exhaust Boot Sierra high-quality engine parts are designed to meet OEM specifications. For use on MerCruiser Stern Drive engines. Features: Upper Tube: 4" Fits MCM 120, 140 & GM V-6 & V-8 engines Use...