More information about O.S. Engines Exhaust Manifold Inside FS-70/91 OSM72109500
O.S. exhaust manifold is constructed of steel. This product includes one 90º chromed exhaust manifold. One hex nut.
Use with EX-502 Silencer
Thread size, both ends: M11x.75 (pitch)
Hex nut size: 14mm
Main pipe outside diameter: 10mm (.39")
Main pipe inside diameter: 8mm (.31")