Genuine OEM 3975628 Cummins Engine Block Heater 1998–2026 Dodge Ram 5.9L 6.7L

Upgrade or replace your factory block heater with this Cummins 3975628 Engine Block Heater, designed for 1998.5–2026 Dodge Ram trucks equipped with the 5.9L or 6.7L Cummins Turbo Diesel.

This heater threads directly into the engine block and provides reliable engine pre-heating for easier cold starts, reduced wear, improved oil flow, and smoother operation during freezing temperatures. It is a direct replacement Cummins OE heater element, not a universal aftermarket substitute.

Located on the passenger side of the engine—approximately two inches behind the oil filter—this heater is easy to inspect and replace when servicing the engine.

Important Fitment Note: Some early 1994–1998 model years used differing heater element styles. Before ordering, double-check which heater your truck currently uses. If your vehicle requires Cummins part 3916127, this heater will not fit.

Features & Benefits:
- Genuine Cummins replacement block heater element
- Correct fit for 1998.5–2026 5.9L & 6.7L Cummins engines
- Threads directly into the engine block
- Ensures easier cold starts & reduced engine wear
- Improves winter startup reliability & oil flow
- High-quality heating element for long service life
- Simple, direct-fit installation

Specifications:
Cummins Part Number: 3975628
Application: Engine block threaded heater element
Location: Passenger side of block, ~2" behind oil filter

Fitment:
1998.5–2002 Dodge Ram 2500 / 3500 5.9L Cummins
2003–2007 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)