For Kubota Engine:D650, D850, D950. For Kubota:15381-51010,1538151010, 15381-51011, 15381-51011, 15241-51080,1524151080. For Kubota B Series Compact Tractor 1×Fuel Injection Pump. A cam drives the plunger in a reciprocating motion, working in conjunction with a check valve to perform fuel suction and pressurization.