Exhaust Flapper With Clamp 4 in. | Sierra 18-4457 Buffing & Compound Pads Are you looking for a

Are you looking for a reliable way to maintain your boat's performance

Replaces Mercury 14034A3

SIERRA Pivot Pin Bearing 18-2138

Retaining Ring | ZF Marine 0630502039

Exhaust Flapper With Clamp 4 in. | Sierra 18-4457 Buffing & Compound Pads Are you looking for aExhaust Flapper With Clamp 4 in. Sierra 18 4457 Sierra 4 in. Exhaust Flapper With Clamp 18 4457 Exhaust protector valve mounts on the outside of 4 in. exhaust tip to prevent backflow of water into the exhaust. For 4 in. diameter exhaust thru hulls Prevents backflow of water into exhaust system Stainless steel clamp included Designed to mount on the outside of exhaust tips Replaces Mercury 12644A1, 12644Q01 Replaces OMC Johnson Evinrude 509495 Replaces