This manifold can be used to replace stock compliance fitting manifolds on 1984-89 and stock rigid mount manifolds from 1990-99. They may also be used to replace manifolds on S&S engines for 1984-99 Harley-Davidson® big twins. The 1-7/8 in. manifold flange bolt pattern will accept S&S® ES, LS, Super A, B, and E carbs as well as stock butterfly style Tillotson®, Bendix®, and Keihin® carburetors. The #410 manifold is for engines with stock - 5.550 in. length cylinders.
S&S 1-7/8 in. ports for 80 in., 89 in., and 96 in. engines