For 1948-'84 Panhead, Shovelhead & 3-5/8 bore KN Series. This is a direct replacement for Harley-Davidson part numbers 16814-77 and 6469HW. Note: All reference to H-D part numbers is for identification purposes only. We in no way are implying that any of S&S Cycle's products are original equipment parts or that they are equivalent to the corresponding H-D part number shown. S&S Part #: 93-3024