Engines & Maintenance

Sierra Emergency Cut-Off Switch & Lanyard - MP28870 Closed position with lanyard off Kills ignition when lanyard is pulled For use with conventional or magneto ignitions Seals out moisture Makes re-connection easier Panel thickness up to...

Sierra Emergency Cut-Off Switch MP40970-1 Coiled Lanyard Kills ignition when lanyard is pulled For use with conventional or magneto ignitions Unique design keeps plunger down when lanyard connected Seals out moisture Makes re-connection easier Panel...

Sierra Engine Alignment Tool Used to verify engine alignment on all MC-I, R-MR, Alpha One and Alpha One/Gen IIUsed to verify engine alignment on Cobra models Interchanges GLM: 90050 Mercruiser...

Sierra Engine Coupler - Mercruiser For: All GM engines except MR/Alpha/Bravo with "Triangular", 3-bolt coupler Interchangeable with the following: GLM11500 Mercruiser Stern Drive32492A232492A332492A538965A138965A276850A2

Sierra Engine Coupler - Mercruiser - S-18-2173. Replaces: 59826A1, 59826A3For: Ford engines Part Number SRA-S-18-2173

Sierra Engine Coupler - Mercruiser - S-18-2413. Replaces: 69354A1, 69354A2For: 470, 485 (224 cu. in. )S/N 4208730-6218036 (1976-1982) Part Number SRA-S-18-2413

Sierra Engine Mount Bolt Kit For Mercruiser For: R/MR/Alpha I/ Gen II/ Bravo Pack Contents: Washer NSS Spacer NSS Lock washer NSS Washer 18-0681 Motor Mount Bolt 18-3729 Lock Nut 18-3728   Interchangeable with the...

Sierra Emergency Engine Stop Switch Kills ignition when lanyard is pulledFor use with conventional or magneto ignitionsSeals out moistureMakes re-connection easierPanel thickness up to 1/4''Push button kill featureCircuit closed with lanyard...

Sierra Ethanol Fuel Treatment and Stabilizer - 1 Gallon / 3.78L 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 a non-alcohol water...

Sierra Ethanol Fuel Treatment and Stabilizer - 8 oz art#: S-18-9775 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 a non-alcohol water...

Sierra Ethanol Fuel Treatment and Stabilizer - 946ml 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 a non-alcohol water remover that helps...

Sierra Exhaust Bellows All clutch dog Cobra models (1986-1993) Interchangeable with the following:GLM89190OMC Stern Drive911814912950914036