Exhaust Flappers & Shutters
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Mercruiser Exhaust Water Shutter | Sierra 18-2727SIERRA-18-2727Qty In Stock: 10Brand: SierraExhaust Water Shutter Learn MoreMSRP: $35.79 $22.91 -
Mercruiser Exhaust Water Shutter | Sierra 18-2733SIERRA-18-2733Qty In Stock: 14Brand: SierraMercruiser exhaust water shutter. Sold individually - two required per engine.
Learn MoreMSRP: $31.09 $20.17 -
Exhaust Flapper With Clamp - 3 in. | Sierra 18-4456SIERRA-18-4456Qty In Stock: 40Brand: SierraExhaust protector valve mounts on the outside of 3 in. exhaust tip to prevent backflow of water into the exhaust. Learn MoreMSRP: $36.49 $23.71 -
Exhaust Flapper With Clamp - 4 in. | Sierra 18-4457SIERRA-18-4457Qty In Stock: 24Brand: SierraExhaust protector valve mounts on the outside of 4 in. exhaust tip to prevent backflow of water into the exhaust. Learn MoreMSRP: $35.99 $24.42 -
Exhaust Flapper With Clamp - 5 & 6 in. | Sierra 18-4458SIERRA-18-4458Qty In Stock: 22Brand: SierraExhaust protector valve mounts on the outside of 5 in. & 6 in. exhaust tip to prevent backflow of water into the exhaust. Learn MoreMSRP: $77.19 $46.45
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