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self-tailing jaws
Hella precision optics for excellent visibility
even in rough conditions
Our Line Boss tension bands come in handy for keeping the line on your spools and also for applying tension during the spooling process
Made in the USA
Sierra Premium 18-4457 Exhaust Flapper – 4 Inch hinges self-tailing jawsThis 4" Sierra Premium 18 4457 exhaust flapper is designed to protect your marine engine from backflow damage. It features a durable stainless steel hose clamp and a weather resistant rubber flapper valve for long lasting performance. This model replaces MerCruiser 12644A and is also listed as alternate part numbers SIE 4457, 18 4457, and 47 4457.
US$ 125.00
US$ 32.00
US$ 45.00
