Large Valve Seat for 28.5mm Intake Valve

$10.95

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Large Valve Seat for 28.5mm Intake Valve

This valve seat is a custom part made by ARC to be used with our 28.5mm Intake Valve. The inside diameter of this seat is .145" larger than the stock seat. Simply put, a bigger hole flows more than a smaller hole. Note that air cooled OHV engine heads get HOT and a tighter intereference fit will be necessary than what would be acceptable on a water cooled OHV or flathead engine. Valve Seat Dimensions: 1.020" ID x 1.209" OD x .250" HT