SKP SK604002 HVAC Blend Door Actuator - Auxiliary, Left Main or Main

HVAC Blend Door Actuator for Ram and Viper

Restore proper HVAC air distribution with this SKP HVAC blend door actuator, part number SK604002. It is a direct-fit replacement for select Dodge Ram, Dodge Viper, Chrysler Aspen, Dodge Durango, Chrysler Cirrus, Chrysler Sebring, and Dodge Stratus applications with recirculation, blend, mode, or defrost functions depending on vehicle configuration.

• Direct replacement HVAC blend door actuator for temperature and airflow control
• Fits Main, Left Main, and Auxiliary positions across listed applications
• Cross-references Dorman OE Solutions 604-002 for the same application
• Also interchanges with 655-1698, 4885206AA, 4885206AB, and 5019631AA
• Part number SK604002 for easy catalog matching

SK604002 is used to move the HVAC doors that direct cabin air through the correct path in the heating and air conditioning system. On Dodge Ram 1500, Ram 2500, and Ram 3500 trucks, as well as Dodge Viper and Dodge Durango models, a worn actuator can cause incorrect vent selection, inconsistent temperature control, or recirculation problems. This replacement supports the factory-style HVAC function for the listed vehicles.

Common Issues This Part Can Solve

• Air stuck on one vent setting, such as defrost or floor
• Temperature changes that do not respond correctly to the controls
• Recirculation door movement problems
• Clicking or repeated actuator movement behind the dash
• HVAC airflow that does not match the selected mode

Installation Notes and Tips

Verify the vehicle year, make, model, position, and HVAC configuration before ordering. Fitment varies by Main, Left Main, and Auxiliary locations, and some Ram applications require specific notes such as heater-only, dual-zone temperature control, or heavy-duty model coverage. Confirm the original part number and connector style against the removed unit before installation.

Quality Assurance

SKP replacement parts are cataloged for direct application matching, and SK604002 is listed with multiple OE and aftermarket interchange numbers for identification accuracy.