Need all specs on this air filter
By Anon.
Answer QuestionThis filter is designed to fit HSR42 HSR45 and HSR48 carburetors installed on Harley Davidson applications. It has a 2 1/2" ID mount flange to clamp the the intake bell of the Mikuni Carb. It has a 6 1/8" diameter at the backing plate with two 5/16"-18 x 1/2" mount studs to hold to the backing plate. It tapers our to a 7" diameter out front with a thickness of 2 5/8". There is a center mount hole for a single hole derby cover using a 5/16-18 threaded bung.