Dynomax 35619 - Dynomax Collector/Muffler Flappers
Dynomax #289-356193-1/2'' Diameter Exhaust Flapper |
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These flappers are designed to prevent any debris or moisture from entering your upswept headers (like those on many Super Comp & Comp Dragsters) and getting into your expensive race engine through an open valve when the engine is not running.
