Mercruiser Cooling System

Quicksilver 27-863726 MerCruiser V6/V8 1998-2001 Exhaust Elbow Gasket  Full-flow, 4-slot exhaust elbow gasket designed for GM-based MerCruiser V6 and V8 sterndrive and inboard engines (1998–2001) with center rise outlet exhaust...

Sierra 18-3647 160° MerCruiser Thermostat Kit Replaces 807252Q5 Features: Fits: 1987 & newer GM engines with standard cooling Temperature Rating: 160°F Kit Includes: Sie-18-3649 Thermostat Sie-18-2844 Thermostat Cover...

Quicksilver OEM MerCruiser V6/V8 1981-1997 GM Exhaust Elbow Restrictor Gasket 27-863724 Quicksilver Standard cooling restrictor-type exhaust elbow gasket for GM-based MerCruiser V6 and V8 sterndrive and inboard engines (1981–1997) with center rise...

Mercruiser 47-8M0104229 Impeller Kit for Brass Sea Water Pump  OEM repair kit including impeller and O‑ring, specifically designed for MerCruiser V‑6 and V‑8 sterndrives. Fits 2000+ models and includes brass sea water pumps. Application: 5.7L...

Sierra 18-4349 Mercruiser V8 Exhaust Manifold Gasket Set Sierra high-quality engine parts are designed to meet OEM specifications. For GM 200, 228, 230, 260, 898 (5.0 & 5.7L). Set Contains: (2) 18-0872 Exhaust Manifold Gasket (2) 18-0897...

MerCruiser 4Cyl Exhaust Manifold Gasket Set by Sierra For GM 153 & 181 (2.5 & 3.0L) CID Engines; 120 & 140 HP - S/N 6229718 & UP (With Siamese Port Cylinder Heads) Interchangeable...

MerCruiser Pre-Alpha Water Pump Housing Kit by Sierra For #1/R Units without flush S/N 2763442 - 6854392 Pre-Alpha MerCruiser Drives. Models which have been retro fitted with an Alpha style (no preload pin on top of driveshaft) must use Kit # 18-3320...

Sierra 18-0549 Plug Off Cap 1" I.D. Sierra high quality engine parts are designed to meet OEM specifications. Features:   I.D.: 1" or 25.4mm For V8 Stern Drives and Inboards 1977 - present. Interchangeable...

Sierra 18-2849-1 MerCruiser Exhaust Elbow Gasket Standard cooling, full flow 4 slot gasket. For use on MerCruiser 1998-2001 GM V-6 & V-8 with center rise outlet exhaust manifolds. Interchangeable with: Barr  MC 47 27...

Sierra 18-3147 MerCruiser Alpha Gen II Water Pump Kit Sierra high-quality engine parts are designed to meet OEM specifications. For use with Gen II Lower S/N D469859 and Up. Kit Includes: Carrier Seal 18-2354 Impeller 18-3056 Impeller Plate...

Sierra 18-3016-1 Impeller Kit For Use On Late-Model Bravos & High Performances. Sierra replacement engine parts are manufactured to meet or exceed OEM requirements. Features: Includes gasket Includes O-Ring Use with 18-3160-1 Sea Water...

Sierra 18-3668 Thermostat Kit for Mercruiser Stern Drives For Mercruiser engines using 142 degree thermostats Fits 1983 & newer GM V-6 & V-8 engines with standard cooling Includes: (1) Thermostat Cover Gasket (18-2552) (1) Thermostat...

Mercury - Mercruiser 41674T Insert Pick Up Water Tube

Sierra 18-4224 MerCruiser V6/V8 Drain Elbow Assembly Sierra high-quality engine parts are designed to meet OEM specifications.  Features: Includes Drain 3/4" NPT Fits MCM/MIE V-6 & V-8 engines with center rise exhaust...

Mercury - Mercruiser 47-43026T-2 Water Pump Impeller  Genuine OEM Mercury - Mercruiser part. Fits: 30/40/45/50/60 hp Fourstroke Bigfoot 60 hp (3cyl) BigFoot 75 - 125 hp (all 3 & 4 cylinder models s/n A996142 and above) 75/90/115 hp...

Sierra 18-1952-1 MerCruiser V6 85-02 Exhaust Manifold  Replaces 99746A17 This Sierra exhaust manifold is for MerCruiser V6 Engines made by GM between 1985 and 2002. Features: Fits: MerCruiser V6 GM 229 & 262 CID engines built between 1985...

Sierra 18-0389 MerCruiser Heat Exchanger End Gasket Sierra high-quality engine parts are designed to meet OEM specifications. Features: Fits: 3.7L w/ 4 inch heat exchanger. Diameter: 3-15/16" Interchangeable with: GLM 31830 MerCruiser...

Sierra 18-3551 142 Degree Thermostat for Mercruiser, Crusader,PCM When needing to replace your thermostat, we recommend Sierra high-quality engine parts as they are designed to meet OEM specifications at an economical price. The Sierra thermostats are...

Mercury 8M0100527 MerCruiser  Water Pump Repair Kit  This OEM water pump repair kit is for use with a wide variety of Mercury outboards and MerCruiser sterndrives. This complete kit contains gaskets, o-rings, plates, seals, an...

Quicksilver 27-99777-2 Exhaust Elbow Gasket Exhaust elbow gasket 997772 is for use on 120 series (1983 and newer), 140/3.0L inline 6-cylinder and V8 small block (1982 and older) MerCruiser sterndrive and inboard engines made by General Motors with...