K&L Supply Carb Pump Diaphragm Valve Set 18-2807

Each set contains 1 diaphragm with rod attached, 1 rubber boot for rod, spring and O-ring as required. Sold as a set, 3 or 4 piece as noted. Replacement OEM #16021-MC9, 16021-393-004, 16021-393-014. 3-piece set. Diaphragm with 55.60mm long rod, spring and rubber boot for rodThis item fits the following models: 1983 Honda CB450SC Nighthawk1985-1986 Honda CB450SC Nighthawk1976-1978 Honda CB750A Automatic1977-1978 Honda CB750F Super Sport1977-1978 Honda CB750K1983 Honda CM450E