NEW Top Quality 1500w Detroit Diesel OEM type Block Heater. (Compatible with: DD13, DD15, DD16 engines) Made By the OEM Manufacturer for Detroit Diesel Made for us right here in the good 'ol USA, NOT China! Not a flimsy stamped metal part ... solid brass, with a new rubber sealing "O" ring included. Includes a new heavy gauge 6' power cord for 120V AC and detailed installation instructions.