Dorman - OE Solutions Engine Air Intake Heater Relay P/N:904-300
Keep power flowing to your engine's intake air heater with this Dorman relay, part number 904-308, a direct-fit replacement for the 1994-2002 Dodge Ram 2500 and 1994-2002 Dodge Ram 3500. The intake heater relay switches current to the heater that warms incoming air. Dorman designed it for durability and reliable performance, so it is a practical choice when the factory relay is no longer doing its job. See the "Vehicles it fits" section for engine-level details.
Signs this part may need replacing: Possible signs include hard starting in cold weather or an intake heater that no longer comes on. These symptoms can have other causes, so diagnose the heater circuit before replacing parts. If a failed relay is the cause, this unit replaces it.
Interchange: RY-441
RY441 · R4811 · 56026842 · 68188401aa · 1R1835
This part cross-references / interchanges with the following part numbers:
What does the Dorman 904-308 intake heater relay do?
It switches power to the engine's intake air heater, which warms incoming air. The relay lets a low-current control signal operate the heater's higher-current circuit.
Will this relay fit my 1994-2002 Dodge Ram 2500 or Dodge Ram 3500?
It is listed as a direct-fit replacement for the 1994-2002 Dodge Ram 2500 and 1994-2002 Dodge Ram 3500. Engine-level details are in the "Vehicles it fits" section.
What are the signs an intake heater relay may need replacing?
Signs may include hard starting in cold weather or an intake heater that doesn't come on. Other parts can cause these symptoms, so diagnose the circuit before replacing the relay.
Which part numbers does the 904-308 interchange with?
It cross-references to RY-441 (RY441), R4811, 56026842, 68188401aa and 1R1835.
How do I install this intake heater relay?
It is designed to match the original relay's fit and function. Disconnect the battery first, then follow the vehicle service information for the relay's location and connections.
No reviews yet — be the first to review this product.
Write a Review
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.