Throttle Body for Honda B16/ B17/ B18/ B20/ D15/ D16/ F20/ F22/ F23/ H22 and H23 engines in its exclusive, fine shot-blasted surface finish. The Throttle Bodies for B-series engines feature a large 70mm bore, which results in significant horsepower gains throughout the power band on heavily modified, naturally aspirated applications and even more on forced induction ones.