ADAPTER KIT FOR TITAN™ EXTRA-CAPACITY POLYPROPYLENE DIESEL FUEL TANKS This LB7 Adapter Kit is required to install the Titan™ Extra-Capacity Polypropylene Diesel Fuel Tank (sold separately) in all 01-03 Chevy/GMC trucks with LB7 diesel engine or a 2004 Chevy/GMC truck with LB7 diesel engine and "1" as the eighth number of the VIN. It adapts the LB7 sending unit and vent tee to a Titan™ fuel tank.