NEW Top Quality 750w Compatible with: Detroit Diesel OEM type Block Heater. Compatible with: Detroit Diesel Block Heater DD5 & DD8 (2016 & newer) 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. Also replaces old block heater with LR1843 marking. Block and pad heaters have the longest life and consume considerably less electricity when used in conjunction with a controller such as the Power Badger