Lower Unit & Gearcase

Sierra Drain Plug 18-2454, Replaces 3854539, for OMC Cobra SX Sterndrive

Sierra 18-2399 Retaining Spring - Replaces 324369 for V-4 & V-6 Outboard Gearcase

Sierra Magnetic Drain Screw 18-2378, Replaces 309243, for Cobra Drives & V-6 40-50HP (1989-97)

Sierra Drain Screw 18-2371, M8-1.25 Thread, Replaces 688-45341-00-00, Pack of 50

Sierra 18-2221 Gear Set for Johnson/Evinrude Outboards 112-125 HP

Sierra 18-2100K Seal and Bearing Kit for Mercruiser Gimbal Bearing, White

Sierra 18-2094 Oil Seal, Replaces 30-60794A2, Fits Mercruiser 1, R, MR and Alpha Stern Drives 1974-97

Sierra 18-2011 Oil Seal for MerCruiser 60/80/90 Gear Housing (1965-1972), Replaces Mercury Marine 26-90562

Sierra 18-2003 Oil Seal for MerCruiser Alpha One Upper Gear Housing, Replaces Mercury Marine 26-68493 26-823894

Sierra Bearing Repair Kit 18-1404 for Mercruiser Lower Gear Housing

Sierra Bearing Carrier Shim.003 Inch Green 18-0227 for OMC Gearcase

Sierra Shift Housing Gasket 18-0110-9, Replaces OMC 324670, Pack of 2, Evinrude/Johnson

Sierra Gear Housing Seal Kit 18-0021, Replaces Yamaha 688-W0001-22-00, Fits C75/E75/P75/C80/C85/90/B90/C90 Outboards

Sierra 18-2772-1 Transom Seal Kit for OMC SX Cobra Drives with Cone Clutch and Volvo SX Drives

Sierra 18-2682 Lower Unit Seal Kit for Evinrude Outboard Gear Housings, White

Sierra 18-3206 Water Pump Housing - Replaces OMC 907774 - I/O Stern Drives 1972-86, Except Cobra

Sierra Lower Unit Seal Kit 18-2672, Replaces OMC 439967/984458/985613, for V6/V8 Cobra Stern Drive (1986-1991)

Sierra Gear Housing Seal Kit 18-2598, Replaces Volvo Penta 3855275

Sierra 18-1236 Drain Screw, OEM 309243, for OMC Cobra V-6 40-50 HP Drives (1989-97)

Sierra Drain/Fill Plug Washer 18-4248-9, Replaces 311598, Plastic, Pack of 5

Sierra E-TEC Drain Screw 18-4255, Replaces 309243, Fits 40-50 HP Cobra Drives (1989-97)

Sierra Cover Assembly 18-4750, Replaces OMC 337778, Fits OMC Cobra & V6 Sterndrives 100-225 HP (1993)

Sierra 18-99525 Lower Unit Adapter Kit, Cross-Reference 551-33-1, 551-34PV, 551-34HA, 551-34HB