This universal Throttle body is a direct fit for any B series engine with upper mounted MAP sensor and Honda throttle position sensor. Comes with body itself, and gasket. Great upgrade for any high output B series engine. Bolt pattern matches B/D/H/S2000 engines. With slight modification of water hoses it can be a very universal piece. This throttle body is 68mm at the blade and ends at 70mm at the opening.