Dee Zee Diesel Gravity Feed Install Kit for Auxiliary Tanks for Select Chevy (2001-2010), GMC (1999-2010) Model DZ97961Dee Zee Diesel Gravity Feed Install Kit for Auxiliary Tanks for Select Chevy (2001 2010), GMC (1999 2010) Model DZ97961 Dee Zee Connector Kit Gives you the ability to refuel your diesel fuel tank via gravity feed system. Connect to your Dee Zee Auxiliary Tank (sold separately) to your vehicles fuel line to always keep your tank full. All hoses and mounting hardware included. Some cutting may be required of the OEM fuel hose. Listed for diesel fuel