Sierra Marine Engine Parts & Drive Parts   Sierra Marine is a trusted name in aftermarket replacement boat engine and drive parts. Sierra’s products are designed and engineered to exceed the high horsepower demands of today’s engines in the harshest marine environments. All Sierra products meet or exceed the original equipment part it replaces.   If you need help finding a part, we need, Make, Model, Year, Horsepower, and Serial number of your engine.   Warning: We can no longer ship engine parts International or to California Due to Prop 65.

Synthetic marine formulation reduces operating friction for increased performance and protection of gears, bearings and other Gearcase components. Recommended for use in high performance and high load operating conditions in both outboard and I/O lower unit gear cases, 75HP and above, where a GL-5 class lubricant is required. 80W90

For filling lower units on outboards and stern drives. Tapered/Unthreaded hose end. Designed for use with 18-9600-5, 18-9620-5 and 18-9650-5.

Recommended for all general marine applications requiring a GL-5 class lubricant. 80W90. Ideal for replacing all old hypoid 90 applications needs. Formulated for use in freshwater or saltwater conditions and all standard marine applications under 75HP. Reduces friction and protects gears, bearings and other Gearcase components. Lower Unit Kit contains: two(2) 10 oz. tubes of Lower Unit Gear Lube and one(1) Flush & fill tool for small gearcases.

High quality synthetic gear lube, 75W90, class GL-5. Manufactured to Volvo specifications. Replaces Volvo # 1141679. 55 GALLON DRUMS SHIPPED VIA TRUCK LINE ONLY FROM FACTORY, FREIGHT NOT ALLOWED. ADDITIONAL CHARGE APPLIES FOR LIFT GATE.

Meets the following manufactures specifications: Volvo VDS-3; Cummins CES20078, CES20077, CES20076; Detroit Diesel DDC93D214; CAT ECF-2, ECF-1; Global DHD-1. Increased detergency fights soot and carbon deposits. Certified to API CL-4+ Rating. Meets highest standards for diesel oil. Sold in case quantities only. WHILE QUANTITIES LAST.

Sierra TC-W3 is a high performance lubricant that has been designed to meet and exceed all (Domestic & Import) engine manufacturers warranties. Exceeds JASO, ISO, API and NMMA for advanced generation 2 cycle lubricants. Priced each, sold in case quantities only.

High performance lubricant designed to meet and exceed all Domestic and Import engine manufacturers' warranties. Exceeds JASO, ISO, API and NMMA for advanced generation 2 cycle lubricants. Protects engine against heat, friction and rust. Formulated specifically for BRP E-Tec and most other high performance 2-stroke marine engines. Priced each, sold in case quantities only.

High performance lubricant designed to meet and exceed all Domestic and Import engine manufacturers' warranties. Exceeds JASO, ISO, API and NMMA for advanced generation 2 cycle lubricants. Protects engine against heat, friction and rust. Formulated specifically for BRP E-Tec and most other high performance 2-stroke marine engines. DROP SHIPPED DIRECT FROM FACTORY VIA LTL TRUCK LINE ONLY. FREIGHT NOT ALLOWED. PRICED PER PALLET OR DRUM. ADDITIONAL CHARGE APPLIES FOR LIFT GATE.

Synthetic marine formulation reduces operating friction for increased performance and protection of gears, bearings and other Gearcase components. Recommended for use in high performance and high load operating conditions in both outboard and I/O lower unit gear cases, 75HP and above, where a GL-5 class lubricant is required. 80W90. DROP SHIPPED DIRECT FROM FACTORY VIA LTL TRUCK LINE ONLY. FREIGHT NOT ALLOWED. PRICED PER COMPLETE PALLET OR DRUM. ADDITIONAL CHARGE APPLIES FOR LIFT GATE.

Premium quality motor oil formulated to meet or exceed warranty requirements for 2-cycle outboard engines. Protects engine against heat, friction and rust. Formulated specifically for Mercury Optimax, Yamaha HPDI, BRP Ficht, DI and other high performance injection type engines. Exceeds JASO, ISO, API and NMMA for advanced generation 2 cycle lubricants. Priced each, sold in case quantities only.

Synthetic marine formulation reduces operating friction for increased performance and protection of gears, bearings and other Gearcase components. Recommended for use in high performance and high load operating conditions in both outboard and I/O lower unit gear cases, 75HP and above, where a GL-5 class lubricant is required. 80W90. DROP SHIPPED DIRECT FROM FACTORY VIA LTL TRUCK LINE ONLY. FREIGHT NOT ALLOWED. PRICED PER COMPLETE PALLET OR DRUM. ADDITIONAL CHARGE APPLIES FOR LIFT GATE.

Sierra replacement engine couplers for Mercruiser engines.

Sierra replacement engine couplers for OMC Sterndrive, Cobra and Volvo engines.

Sierra replacement engine couplers for OMC Sterndrive, Cobra and Volvo engines.