O-ring style manifold for 1966 - ' 77 Harley-Davidson big twin and 1957 - ' 78 ironhead Sportster models with stock 5.330" cylinders and S&S ES, LS, Super A, B, E, Tillotson, Bendix, or Keihin carburetors. Harley-Davidson part number 27021-71A. 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 #: 16-1200
Fitment: Vintage Sportster 1957-1985

Cross-Reference: The following OEM numbers are provided for reference only and may not be completely accurate.
Harley OEM Cross Reference Numbers:
27021-71A