The FR604H is a 115-Volt 15 GPM fuel transfer pump that comes as a pump only model with a 3/4 in. elbow (3/4 in. outlet). It can be used to pump gasoline, diesel, kerosene, ethanol blends up to 15%, methanol blends up to 15%, and bio-diesel up to B20. The previous FR604G model has been updated to the FR604H model. With a removable junction box, the product is now easier to install. The performance specifications of the product did not change.