Blox Racing Tuner Series Cast Aluminum 70mm Throttle Body - Honda B/D/H/F Series - BXIM-00213Blox Racing Tuner Series throttle bodies are alternatives to its line of billet throttle bodies. These units are cast in aluminum and are direct fit for the Honda B D H and F series engines. The Tuner Series throttle body looks and feels like an OEM unit but definitely out performs it. The larger bore sizes help to optimize incoming airflow and increases horsepower and torque. Blox Racing Tuner Series throttle bodies each include a matching gasket.