Type: Relay Solenoid Air Inake Heater Grid. 1pcs Relay Solenoid Air Inake Heater Grid as pictured. How could you know that you need to replace your Dodge 5.9L Cummins Diesel Air Intake Heater Relay?. The cummins diesel 5.9L 12 valve and 24 valve diesel engines do not use glow plugs during the cold startup process.
