Engine Parts

ENGINE BLOCK ADAPTOR BUSHING

Overview Fits MerCruiser stern drive and inboard engine cylinder blocks with the blue colored water drain plugs. See your owner's manual, parts listing or service manual for exact application and installation instructions. Easy to install with common...

JOHNSON IMPELLER KIT 09-812B

Overview The JOHNSON IMPELLER KIT 09-812B ensures peak performance for a wide range of marine engines, providing reliable cooling to keep your boat running smoothly. Designed to service popular Indmar engine models, including Monsoon, Hammerhead, Ford...

NGK BPR6EFS (3623) Standard Spark Plug, Pack of 1

Overview: The NGK BPR6EFS (3623) Standard Spark Plug is engineered for superior performance and longevity in a wide range of applications. Built to last longer and deliver optimum performance, it features Trivant Metal Plating for enhanced anti-corrosion...

NGK BU8H (6431) Standard Spark Plug, Pack of 1

Overview: The NGK BU8H (6431) Standard Spark Plug is a high-performance surface gap spark plug designed for specific high-compression applications. Known for being nearly immune to pre-ignition, this spark plug is ideal for use with specialized...

Quicksilver 8M0100526 Water Pump Repair Kit for Mercury or Mariner Outboards and MerCruiser Stern Drives

Overview The Quicksilver 8M0100526 Water Pump Repair Kit is a 15-piece comprehensive kit designed for use on a variety of MerCruiser and Mercury outboards and stern drives. Built to meet Mercury Marine's original equipment manufacturer (OEM)...

Quicksilver 8M0104229 Water Pump Repair Kit - V-6 and V-8 Powered MerCruiser Stern Drives

Overview   Keep your boat performing at its best with the Quicksilver 8M0104229 Water Pump Repair Kit, designed specifically for V-6 and V-8 powered MerCruiser stern drives. This essential repair kit ensures optimal cooling flow and engine...

QuickSilver Impeller MerCruiser Alpha 1 Kit

Overview The QuickSilver Impeller MerCruiser Alpha 1 Kit (47-89984Q 5) is designed to provide a complete solution for replacing the water pump impeller in Mercury/Mariner 65 HP (4-Cylinder) through V-6 models and Mercury MerCruiser I/R/MR/Alpha drives...

Quicksilver W/ Cap & Rotor Kit

Overview The Quicksilver W/ Cap & Rotor Kit is a premium replacement kit designed for GM V-8 engines equipped with Thunderbolt IV and V HEI ignitions. Manufactured by Quicksilver, a trusted name in the marine industry for over 65 years, this kit...

Sea Water Pump 18-3160-1 for 2000 & newer MCM V-6 & V-8 w/ Brass Water Pump

Details: Fits: 2000 & newer MCM V-6 & V-8 (305, 350 & 496 CID) engines with the brass sea water pump Interchange: Mercruiser Stern Drive 46-862914A13 Mercruiser Stern Drive 8M0118062 Quicksilver 8M0139984

SHERWOOD MASTERCRAFT IMPELLER (ILLMOR)

Overview The Sherwood Mastercraft Impeller (Ilmor) is a premium replacement part designed for Mastercraft GDI and 2020+ Ilmor engines, ensuring optimal water circulation and engine cooling. Engineered for high durability and efficiency, this impeller is...

Sierra 18-21005 Gimbal Bearing – Greasable Fit for Bravo & Alpha One Gen II

Greasable Fits: All Bravos, Alpha One Gen II (1998 & Up) Interchange: Mallory 9-72412 Mercruiser Stern Drive 30-862540A04 Mercruiser Stern Drive 30-862540A3 Mercruiser Stern Drive 30-862540T1 Mercruiser Stern Drive 30-879194A01

Sierra 18-3056 Impeller for Mercruiser Alpha I Gen 2 & Vazer

Details: For: Alpha I-Generation 2 s/n D494569 & above Mercruiser Vazer For: 30/40/45/50/60 4-stroke Bigfoot, 60 (3cyl) Bigfoot, 75-125 (all 3 & 4 cyl models) A996142 & Up For: 75/90/115 4-Stroke, 150 EFI 4-Stroke, V-200 (3.0L) DFI, and...

Sierra Bravo Impeller Kit

Overview The Sierra Bravo Impeller Kit (18-3309) is a high-quality marine water pump kit designed for Mercruiser Stern Drive systems. This kit is specifically engineered to ensure efficient engine cooling, extending the life of your marine engine. It...

Sierra IMPELLER KIT MERCURY

Overview The Sierra 18-3016-1 Impeller Kit is designed for Mercruiser 4.5L MPI and V6/V8 engines (305, 350, & 496 CID) from 2002 and up with a brass sea water pump. This comprehensive kit includes the gasket and is compatible with Sierra 18-3160-1...

Sierra Marine 18-2174 U-Joint Cross and Bearing

Includes both straight and 90° grease fitting Heavy Duty Fits: Alpha I Units s/n B418819 & Above, also fits Alpha I SS & Bravo Interchange: GLM 28030 Mallory 9-72405 Mercruiser Stern Drive 36312 Mercruiser Stern...

Sierra Marine 18-2747 Drive Bellows for Alpha One Gen II (1991 & Newer) and Vazer

Fits: Alpha One Gen II (1991 & Newer) and Vazer Interchange: GLM 89180 Mallory 9-72704 Mercruiser Stern Drive 816431A1

Sierra Marine 18-2760 Exhaust Tube for #1, Bravo I, II, III

For: #1, Bravo I, II, III Interchange: GLM 89150 Mallory 9-72810 Mercruiser Stern Drive 78458 Mercruiser Stern Drive 78458A1

Sierra Marine 18-3577-2 Circulating Water Pump for Big Block GM V-8 (454 & 502 CID) engines

Details: Bi-Directional Fits: Big Block GM V-8 (454 & 502 CID) engines Interchange: Crusader 17670 Crusader 30109 Crusader 67859 Crusader 811573 GM 6269358 Mercruiser Stern Drive 17670 Mercruiser Stern Drive 46-8M0113735 Mercruiser...

Sierra Marine 18-5281 Tune Up Kit

GM V-8 Delco EST Fits 1996-2005 Indmar Monsoon, MCX, RPT & Hammerhead Engines Interchange: CDI E66-0004 GLM 71810 Mallory 9-29308 Mercruiser Stern Drive 808483K1 Mercruiser Stern Drive 808483Q1 Mercruiser Stern Drive 808483T2 OMC...

Sierra Marine 18-7283 Fuel Pump for GM V-8 (305 & 350 CID) Engines

Details: Flange I.D.: M60600 Includes mounting gasket Fits: GM V-8 (305 & 350 CID) Engines Interchange: EMP 35-35283 Mallory 9-35423 Mercruiser Stern Drive 861678A1 Mercruiser Stern Drive 8M0058164 Mercruiser Stern...

Sierra Marine Circulating Bi-Directional Water Pump 18-3599-2

For: GM V-6 & Small Block V-8 engines Bi-Directional pump Interchange: Crusader 20318 Crusader 7142520 Mercruiser Stern Drive 17437 Mercruiser Stern Drive 35341 Mercruiser Stern Drive 37951 Mercruiser Stern...

Sierra Marine Trim Sender/Limit Kit 18-7633 for MC-I, R, MR, Alpha, Alpha Gen II, Bravo drives

Fits: MC-I, R, MR, Alpha, Alpha Gen II, Bravo drives Interchange: Mercruiser Stern Drive 17693A2 Mercruiser Stern Drive 63115A12 Mercruiser Stern Drive 805320A03 Mercruiser Stern Drive 805320A1 Mercruiser Stern Drive 88678A4 Mercruiser...

Sierra Marine Tune Up Kit 18-5247 for Mercruiser

For: Late Model V-8 (Alpha/Bravo 350 Mag. 5.0L, 5.7L & 6.2L MPI engines w/ECM 555 S/N 0M300000 & Up) For: Delco HVS V-8 Distributors Interchange: CDI E66-0006 Mallory 9-29318 Mercruiser Stern Drive 898253T29 Mercruiser Stern...

Sierra Marine Tune Up Kit 18-5273 for GM V-8 Engines with Thunderbolt IV & V HEI Ignitions

Fits: GM V-8 Engines with Thunderbolt IV & V HEI Ignitions Display Package Interchange: CDI E66-0012 GLM 71780 Mallory 9-29350 Mercruiser Stern Drive 805759Q3 Mercruiser Stern Drive 805759T3

Sierra Marine U-Joint Assembly 18-2339 for Cobra 1994-Up, GLM, OMC, Volvo Penta

Details: Fits all Cobra 1994-Up except King Cobra Interchange: GLM 28318 OMC Stern Drive 3852384 OMC Stern Drive 3860842 Volvo Penta 3852384 Volvo Penta 3860842

Sierra Marine U-Joint Bellows 18-2756 for Bravo & Blackhawk models

Includes: Clamp For: Bravo & Blackhawk models Interchange: GLM 89140 Mallory 9-72702 Mercruiser Stern Drive 86840A05 Mercruiser Stern Drive 86840A3 Mercruiser Stern Drive 8M0062406

Sierra Marine U-Joint Bellows 18-2765 for DP-S, SX, All Clutch Dog Cobra Models 1986-1993

For: DP-S, SX For: All Clutch Dog Cobra Models 1986-1993 Interchange: GLM 89200 Mallory 9-72707 OMC Stern Drive 22197130 OMC Stern Drive 3841481 OMC Stern Drive 3854127 OMC Stern Drive 983973 OMC Stern Drive 987467 Volvo...

Sierra Marine Universal Starter 18-5603-1 for Mercruiser, Arco, Indmar, Mallory, Mallory, and Pleasurecraft

Details: Noseless: CCW Top Mount Rear Entry Starter for Standard Rotation GM & Ford Engines Can be used in place of 18-5908 Starter Improved Housing designed to seal off the internal components from the extreme elements...

Sierra Mercruiser Impeller Kit 18-3214 for Alpha I - Generation II S/N D494569 & above

Overview The Sierra Mercruiser Impeller Kit is a premium replacement water pump kit designed specifically for Mercruiser Stern Drives. This kit provides the essential components for reliable engine cooling, ensuring optimal performance and protection for...

Sierra PCM Impeller CR 5.7-6.0 L

Overview The Sierra PCM Impeller CR 5.7-6.0L is designed for 5.7L, 6.0L, and 8.1L engine models with serpentine belt-driven water pumps. This high-quality impeller is a direct replacement for Crusader RP061022 and is backed by Sierra's industry-leading...