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.
