Designed to connect your RDS auxiliary or RDS transfer diesel fuel tank to your truck's fuel fill hose. Automatically controls the fuel level going into your OEM tank. Kit includes hoses, clamps and fittings for easy installation. Intended for diesel fuel only. Works on diesel powered passenger trucks up through 350 or 3500 vehicle (not on diesel commercial/semi-trucks). Made in USA. For safety reasons, the filler neck on RDS fuel tanks prevents them from being overfilled. Actual usable tank capacity is about 95% of the total advertised gallons due to fuel expansion in warmer climates. | RDS Diesel Install Kit for Auxiliary and Transfer Fuel Tanks, Fits Chevy and GMC Trucks up thru 2010 with 2 fuel fill hoses in Black Made in USA