Engines & Maintenance

Quality rotary switches with optional light module to display different light colours to designate differing positions of the switch. Rated to 20 amps at 12 volts. Durable can design for long life...

Sierra SAE 30 Full Synthetic Oil - 4.7L 4-cycle oil blended with premium grade synthetic and mineral based stockSuperior designed additives formulated for the stress endured by sterndrive and inboard...

Sierra SAE 30 Full Synthetic Oil - 946ml Part#: S-18-9410-2 Special blend of synthetic base oil and a balanced additive system that exceeds FC-W requirements Recommended for gasoline and diesel...

Sierra Sea Water Pump - Mercruiser - S-18-3600. Replaces: 46-72774A32, 46-72774A11, 46-73823A7, 46-63450A2, 46-59112A2Fits: V8 Engines w/ith V-Belt and 2 piece pumpUse repair kit S-18-3155 Part...

Sierra Sea Water Pump, Brass - Mercruiser 8M0139984 Fits: 2000 & newer MCM V-6 & V-8 (305, 350 & 496 CID) engines with the brass sea water pumpKit Contains: Impeller 18-3016-1 Interchangeable with...

Sierra Seal & Gimbal Bearing Kit - Mercruiser - S-18-2100K. Replaces: 30-60794A2, 30-60794A4, 30-879194A02Greasable. Contains (1) each of S-18-2094 & S-18-2100Fits: 1, R, MR and Alpha (1974-97) Part...

Sierra Seal & Gimbal Bearing Kit For Mercruiser Durable construction Non-corrosive Hard-wearing parts and components Replaces 30-862540A3, 30-862540T1, 30-862540A04, 30-879194A01 Contains (1) each...

Sierra Seal Kit - Johnson/EvinrudeReplaces: 5000309For: E-Tec 40, 50, 60 HP Part Number SRA-S-18-8383

Sierra Seal Kit - Johnson/EvinrudeReplaces: E-Tec 5006373For: E-Tec 75/90/115/150/175/200/225/250 HP Part Number SRA-S-18-8384

Sierra Sensor, Knock - Honda - S-18-7559. Replaces: 30530-P8F-A01Fits: BF200A 2002-2006, BF200AK0, BF225 2002-2006, BF225AK0 Part Number SRA-S-18-7559

Sierra Serpentine Belt - Mercury/Mariner Replaces 57-828507 1Replaces: 57-828507 1Fits: 200 DFI (1997& Up), 225 DFI (1998 & Up) Part Number SRA-S-18-15129

Sierra Serpentine Belt - Mercury/Mariner Replaces 57-828507Q4Replaces: 57-828507Q4For: 135 DFI (1998-Up), 150 DFI (1998-Up), 175 DFI (2001-Up) Part Number SRA-S-18-18100