This kit includes the Genuine Cummins 3975628 block heater element along with the BackWoods Diesel 6-foot heater cord-everything needed for dependable cold-weather starting and reduced engine wear. The block heater threads directly into the engine block on the passenger side, behind the oil filter, while the BackWoods Diesel cord provides the necessary electrical connection for winter operation. (1) Genuine Cummins 3975628 Engine Block Heater Element. Threads directly into the engine block. OEM-grade reliability and performance. (1) BackWoods Diesel 6ft Block Heater Cord. Designed to plug into the Cummins 3975628 heater element. Heavy-duty insulation for harsh winter climates. 6-foot length for convenient routing. Molded connectors for secure long-term use. Ensures easier winter starts & reduces cold-start wear. Improves oil circulation and engine longevity. Ideal for trucks missing the original heater cord. OEM Cummins heater + BackWoods Diesel high-quality cord. Simple, direct-fit installation. More economical than dealer-sourced kits. 1998.5-2002 Dodge Ram 2500 / 3500 5.9L Cummins. 2007.5-2026 Ram 2500 / 3500 6.7L Cummins. (Including HO, SO, Tradesman, Big Horn, Laramie, Limited & all trim levels). To the lower 48 US states. Thanks for looking, be sure to check out our other items!