Dorman 904-308 Engine Air Intake Heater Relay

Engine Air Intake Heater Relay for Dodge Ram

This Dorman engine air intake heater relay is built to match the fit and function of the original relay on specified vehicles. It is a direct replacement for diesel intake heater control needs and is engineered for durable, reliable performance in demanding conditions.

• Direct replacement engine air intake heater relay for specified applications
• Weather resistant construction for underhood exposure
• 8-terminal design with screw terminal/threaded post connections
• 95 amp amperage rating for intake heater circuit demands
• Bolt-on mounting type for secure installation
• Fits 1994-2002 Dodge Ram 2500 and 1994-2002 Dodge Ram 3500

Detailed Product Overview

Designed for diesel intake heater control, this relay helps restore proper electrical switching for the engine air intake heater system. The Dorman 904-308 is made to match the original relay’s fit and function, making it a practical replacement when the factory unit fails or becomes unreliable. It is a strong match for Dodge Ram 2500 and Dodge Ram 3500 trucks across the 1994-2002 model years.

This part cross-references Standard Ignition RY-441 for the same application. The Dorman 904-308 also aligns with interchange references 56026842 and R4811.

What It Helps Address

• Hard starting in cold weather caused by a failed intake heater relay
• Intermittent or no power delivery to the engine air intake heater circuit
• Relay-related electrical switching issues in diesel intake heater systems
• Replacement needs for worn, heat-stressed, or weather-exposed original relays
• Restoration of proper heater relay operation on Dodge Ram 2500 and Ram 3500 trucks

Installation Notes and Tips

Verify connector style, terminal count, and mounting location before installation. This relay uses an 8-terminal, screw terminal/threaded post design with bolt-on mounting, so matching the original configuration is important for proper fitment. Confirm vehicle application by year and model before replacing the existing relay.

Quality Assurance

Dorman engineers this relay to match original fit and function and to deliver dependable performance. Its weather-resistant design supports long-term use in underhood environments.