Some 6.7 Cummins owners have considered simply removing the grid heater and not replacing it with anything. While you can remove parts or delete a diesel truck , it's generally a bad idea.

On some Cummins 6.7L engines, the bolts holding the grid heater in place can, over time, loosen, break, or melt due to the repeated cycles of heating and cooling, along with engine vibrations.

The grid heaters are needed for startup in cold weather. ... but most people that have done a Cummins swap simply control the relays with a momentary pushbutton switch somewhere on the dash.

Chrysler (FCA US, LLC) is recalling certain 2021-2023 Ram 2500, 3500, 3500 Cab Chassis, and 4500, 5500 Cab Chassis vehicles equipped with a Cummins 6.7L Turbo Diesel engine. An electrical short ...

So, knowing about the grid heater’s potentially negative effect on performance and reliability, you might think that’s why Ram and Cummins ditched it for 2025. But that’s not it.

On some Cummins 6.7L engines, the bolts holding the grid heater in place can, over time, loosen, break, or melt due to the repeated cycles of heating and cooling, along with engine vibrations.