Johnson Pump 65F3B Oil Change Kit w Flexible Impeller Pump The Johnson Pump 65F3B Oil Change Kit is an all-in-one complete oil change package that makes oil changes hassle-free. This oil change kit is for marine or industrial applications and features reliable, well-designed F3B-19 flexible impeller pump technology. The F3B-19 impeller pump has a 5.5 GPM capacity and features a Nitrile impeller that is both serviceable and replaceable. A reversing switch is conveniently built into the pump, allo