Sierra 18-4458 Universal 5" Exhaust Protector Valve
Sierra high-quality engine parts are designed to meet OEM specifications. Fits both 5" & 6" Exhaust and includes stainless steel clamp.
Replaces:
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
Other Details
Sierra 18-4457 Mercruiser Exhaust Protector Valve - Replaces 12644A1 The Sierra 18-4457 Exhaust protector valve is a compounded rubber flapper valve that prevents water from entering the exhaust...
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Sierra 18-4456 Universal 3" Exhaust Flapper Includes 3" stainless steel clamp. Features: Compounded rubber flapper valves stops water from entering the exhaust system Constructed with weather...
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Sierra 18-2745 Exhaust Boot Sierra high-quality engine parts are designed to meet OEM specifications. For OMC Stern Drives. Fits 5.7L & 7.5L Engines (1986 & Later) Interchangeable...
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Sierra 18-2762 Mercruiser Exhaust Elbow Tube Sierra high-quality engine parts are designed to meet OEM specifications. Fits MCM 470/485, 898, 228, 250, 260, 280, 330 & Ford...
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