S&S CYCLE - INTAKE MANIFOLD CLAMP - O-RING - 55 MM - 78 MMIntake Manifold Clamp O Ring 55 mm 78 mm Highlights Clamp is 3 4" wide and constructed of . 020" thick stainless steel and use a curved 10 24 threaded "T" bolt with plated steel aircraft style hex locknut Made in the USA + Fitment 1955 1957 Harley Davidson Hydra Glide EL (Street) 1955 1957 Harley Davidson Hydra Glide FL (Street) 1958 1964 Harley Davidson Duo Glide FL (Street) 1958 1964 Harley Davidson FLH Duo Glide (Street) 1965 1969, 1978 Harley