*** IN STOCK SHIPS TODAY *** GM blower front cover gasket fits all 4-71 thru early 16-71 superchargers. Gasket is .062" thick with .375" dowel pin holes. Fits GMC, Littlefield, Mooneyham, Hampton, BDS, Dyers, Weaind, Blower Shop, Kuhl but will not fit SSI, Kobelco, Fowler, DMPE or SCS.