Fits Cab Chassis; HEMI VVT Engine.; Supply; 52 Gallon Rear Fuel Tank For Vehicles Built After 12-23-2012; Regular Cab Chassis; HD 4WDor Cab Chassis; Supply; 52 Gallon Rear Fuel Tank For Vehicles Built up to and Including 12-23-2012; Regular Cab Chassis; HD 4WDor Cab Chassis; HEMI VVT Engine.; Supply; 52 Gallon Rear Fuel Tank For Vehicles Built After 12-23-2012; Regular Cab Chassis; ALFA ELECTRIFIEDor Cab Chassis; Supply; 52 Gallon Rear Fuel Tank For Vehicles Built up to and Including 12-23-2012; Regular Cab Chassis; ALFA ELECTRIFIED