S&S CYCLE Throttle Body - 58mm 170-0337

Requires throttle body specific Stealth air cleaners (available separately) for 58mm and 66mm bodies, Sealed, stainless steel throttle shaft with dual roller bearings for smooth operation and no air leaks, One-piece throttle body/manifold design for easy installation and stock appearance, Compatible with stock sensors, fuel rail and throttle cables, Throttle bodies include hardened steel flanges and seals, Black powder coat finish matches stock, More air flow for improved performance, Made in the U.S.A., Some S&S heads have additional material on the manifold surface to allow the use of a stock length manifold (405) on a 124" engine. If you are not sure which manifold should be ordered, check fitment with the stock manifold first.