Engines & Maintenance

Sierra Exhaust Boot - Mercruiser  Lower Tube: 4" or 101.6mmFits: MCM GM V-6 & V-8 engines Interchangeable with the following:GLM89130Mercruiser Stern Drive32-1435832-1435800132-14358T

Sierra Exhaust Boot - Mercruiser  Upper Tube: 4" or 101.6mmFits: MCM 120, 140 & GM V-6 & V-8 enginesUse with: Riser with Exhaust Tube 18-1975-1 Interchangeable with the following:GLM89120Mercruiser...

Sierra Exhaust Elbow (Dry Joint) - Mercruiser - S-18-1845. Replaces: 864591T02Fits: 2004 & Up V6 & V8(305, 350, 377) SN 0W310000 & Up, 2002 & Up V8(350 & 377) SN 0M317000 & UpUse with:Manifolds:...

Sierra Exhaust Elbow Gasket For Mercruiser  Fits: MCM 120 (1993 & newer), 140/3.0L, 470, 165 in-line 6 cyl., GM V-8 small block (1982 & older)Fits: Ford V-8 engines

Sierra Exhaust Elbow Kit Mounting Package Use With:18-1939: Riser18-1907: Riser18-1999: Manifold Elbow Kit Contains:18-4258: Pipe Plug18-2854-1-9: Gasket, Exhaust Elbow Interchangeable with the...

Sierra Exhaust Elbow Mounting Kit Item No: S-18-8530 Mercruiser 4 cyl. 224 cu. in. 3.7L (models 165, 170, 180 & 190) Contains18-0881-1 - Gasket Interchange Mallory9-40581

Sierra Exhaust Flapper Protector Valve Includes: Stainless Steel ClampSize: 5" & 6" or 127mm & 152.4mmCompounded rubber flapper valves prevent water from entering the exhaust systemMade with weather...

Sierra Exhaust Hose 

Sierra Exhaust Hose 

Sierra Exhaust Hose 

Sierra Exhaust Inner Cover Gasket 18-99135 Part#: S-18-99135 Fits: Yamaha 40 (1992-06), 50 (1992-09), P40 (1998), P50 (1992-96), C40 (1997-03), C50 (1998-01) Interchange: Yamaha Outboard -...

Sierra Exhaust Manifold (Dry Joint) - Mercruiser - S-18-1843. Replaces: 865735A02, 865049T01, 864308T01Fits: 305, 350, 377, 5. 0L, 5. 7L, 6. 2L(2002 and Newer)Use with:Manifold Gasket: S-18-2949Elbow...