Raises the height of the engines exhaust system to prevent water from enetering the engine through the exhaust system. Maximum height of 9" (228 mm). 

Two different types of exhaust elbows have been used: cast iron and stainless steel. To tell which one you have, look at the elbows mounting bolts. Cast iron elbows use four long bolts. Stainless steel elbows use four short 1 inch (25 mm) long bolts. 

3 inch (76 mm).

Fit the following models: 

• MerCruiser Marine V-6 Carbureted Engines 
• Throttle Body Injection Engines with 2-piece exhaust manifolds (serial number 0M614999 & below)
• MerCruiser Marine, MerCruiser Inboard and Tow Sports V8 (305, 350, 377, 454 and 502) engines with cast iron elbows (serial number 0M299999 & below)
• MerCruiser Marine V-8 305 & 350 Carbureted engines (serial number 8M300000-0M599999)
• MerCruiser Inboard & Tow Sport Carbureted Engines (serial number 0M300000-0M316999)