GT380 J K L M A B C (1972 to 1978). GT750 J K L M A B (1972 to 1977). New CCI Oil Feed Pipe Banjo Check Valve for the Suzuki applications listed below. GT550 J K L M A B (1972 to 1977). Fits to the end of the 2 Stroke Oil Feed Pipe at the Crankcase and Cylinder connections.