4" Silent Seal Easy Service Exhaust Flapper Assembly 

4" Silent Seal Easy Service Exhaust Flapper Assembly (Each)

At last an answer to eliminating the annoying clanking and banging caused by old design stainless anti-burn exhaust flaps. It seems the many complaints of knocking engine noises and fears caused by the sounds of anti-burn flaps have created the demand to develop and cure this problem once and for all. The all new "Silent Seal" exhaust flap with its special high temp burn resistant rubber compounded exhaust flap and stainless steel cage design provide the perfect answer. This new flap design provides a superior seal and quiet operation. These flaps can easily be retrofitted to earlier style tips with just minor brazing or welding of the flap cage to your exhaust tip. Flap is 3.850" OD with 1" center to center bolt mounting holes.