O-Rings & Gasket Sets

Sierra 18-0879 Adapter Plate Gasket, Replaces Mercury 27-30501-1

Sierra 18-0645 Adapter Plate Gasket for Mercury/Mariner Outboard Motors, White

Sierra Drain Plug Gasket 09168-10022 Replacement for Suzuki Outboards, Package of 5

Sierra 18-0644 Reed Plate Gasket for Mercury Outboards, Replaces 27-146972

Sierra O-Ring for Pressure Control Valve, Part Number 18-0659

Sierra 18-0550 Plug Off Cap, Replaces OMC 909830, 1-1/4 Inch

Sierra 18-0539 Rubber Seal Gasket - Replaces Mercury 37721

Sierra 18-0488 Intake Gasket, Replaces Mercury Marine 27-807473A1

Sierra 18-0411 Oil Pan Gasket Set, Replaces 27-90458A1 & 27-90458, for Mercruiser GM 350 CID (5.7L) Starboard Dipstick Engines

Sierra 18-0403 Intake Gasket Kit, Replaces Mercury Marine 27-52571, Fits MCM 370/400/325/454/502 Mag & MIE 82L 1978-1997

Sierra Mounting Plate to Driveshaft Housing Gasket 18-0334 for Mercury Outboards

Sierra 18-0320 Reed Block Gasket - Cross Reference Mercury 27-13937

Sierra Cover Gasket 18-0232 for Yamaha Outboard Engines, Replaces 27-81031M

Sierra Washer 18-0192, Replaces Yamaha 92901-10600-00, 92902-10600-00, 92903-10600-00

Sierra Rubber Ring 18-0184, Replaces 804190, Clamp Ring Seal for Volvo Penta SP-A/DP-A/DP-B Drives and AQ Series Engines

Sierra Bypass Gasket 18-0141-9, 2-Pack, Force Outboard Powerhead Gasket

Sierra Air Box Gasket 18-0140 for Evinrude Outboard Engines

Sierra 18-0549 Plug Off Cap, 1 Inch I.D., Replaces OMC 909829, V-8 Stern Drives and Inboards 1977 to Present

Sierra 18-7111 O-Ring for OMC Sterndrive and Cobra Sterndrive Crankcase Head, 0.197 Inch ID

Sierra 18-1238 Intake Gasket Set, Replaces OMC/Volvo Penta 912979, Mercury Marine 27-824326

Sierra 18-0989 Air Silencer Gasket, Replaces GLM 34430, Evinrude/Johnson 321794, Mallory 9-60418

Sierra 18-0933 Air Silencer Gasket, Replaces 314115, for Johnson/Evinrude Outboard Motors

Sierra 18-0487 Intake Manifold Gasket for Mercury 4.3L and MCM 262 Mag Engines, Replaces 27-8243261