DescriptionCummins Grid Heater DeleteThe heater grid is not a particularly restrictive device, although it can be removed in favor of increased airflow, less air turbulence, and therefore the potential for more power with a heater delete.Fits:1989-93Some 1996-98 12v ( must have 2 peice grid heater/intake plenum )1998.5 – 07 24v’s Comes with : one (1) heater grid delete only