Improves engine performance by removing gum, varnish, and carbon deposits from internal engine components. Thoroughly cleans intake ports, valves, combustion chambers, pistons, and frees sticky rings. Designed for regular maintenance of 2-cycle and 4- cycle marine engine. Not for use as a fogging oil. Priced each.

Improves engine performance and efficiency. Dissolves gum and varnish from entire fuel system - carbureted or injected. Removes internal carbon deposits from intake ports, valves, combustion chambers, pistons, and frees sticky rings. Displaces moisture and stabilizes fuel during storage periods. Designed for use in 2-cycle and 4-cycle marine engines. WHILE QUANTITIES LAST.

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.

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.

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

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. Priced each, sold in case quantities only.

A special blend of synthetic base oil and balanced additive system that exceeds the FC-W requirements for marine engine oil. Recommended for gasoline and diesel inboard and sterndrive engines. Provides superior engine protection during startups, operation and storage. Reduces friction and wear for extended engine life with longer lubrication effectiveness than mineral oils. Reduces oil consumption and improves fuel economy. Sold in case quantities only, priced each.

A special blend of synthetic base oil and balanced additive system that exceeds the FC-W requirements for marine engine oil. Recommended for gasoline and diesel inboard and sterndrive engines. Provides superior engine protection during startups, operation and storage. Reduces friction and wear for extended engine life with longer lubrication effectiveness than mineral oils. Reduces oil consumption and improves fuel economy. Sold in case quantities only, priced each.

Restores lost power and performance by cleaning clogged fuel injectors using proprietary polyether amine (PEA) detergent technology. Removes deposits that begin to form with every tank of gasoline. Saves gas by keeping fuel injectors clean. Made with highest quality premium PEA and FLA technologies to specifically address and treat the newer direct injection fuel systems in addition to traditional intake-port delivery systems. Provides total system clean-up and keep-clean, fuel lubricity additive, and fuel stabilizer. Increases power and performance, reduces emissions, improves fuel economy prevents rough idle, hesitation and stalling. Helps with cold start-up problems, prevents premature spark plug fouling, reduces deposit-related engine knocking and pinging, helps prevent injector misfire codes. For use with 18-8600 E-GO! Fuel Injector Cleaning Kit. See Shop & Service Equipment section for details.

Stabilizes E10 gasoline for up to 12 months, prevents fuel system corrosion from water attracted by E10 fuels. Cleans fuel system and improves performance. Contains non-alcohol water remover that helps to reduce the chance of phase separation. Easy to use precision measuring package. Safe for use in all gasoline powered engines including generators and outdoor power equipment and in 2-cycle and 4-cycle engines. Prevents gum and varnish formation for optimum performance and quick starts.

Formulated for high operating pressure. Anti-foam additives assures uniform flow with reduced air contamination in hydraulic systems. Designed for heavy duty use at high operating pressures in applications subject to varied temperature ranges. Provides proper lubrication and corrosion protection for internal hydraulic components.

Formulated for Volvo Penta Hydraulic Steering and Power Trim Systems. Provides protection against rust and corrosion. Resists oxidation for longer life. Used for Power Steering Pumps and Trim Cylinders on Volvo Penta Marine Engines. Replaces Volvo Penta 3851039.

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.

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.