Dorman 904-620 HVAC Pressure Switch

Reliable HVAC Pressure Switch for Chrysler, Dodge, Jeep, and Ram Vehicles

The Dorman 904-620 HVAC Pressure Switch is designed to maintain optimal air conditioning system performance in select Chrysler, Dodge, Jeep, and Ram models. Engineered for precise pressure monitoring, this switch ensures your vehicle's A/C system operates within safe parameters.

• Operates at 12 volts for standard automotive electrical systems
• Compatible with R134a refrigerant type
• Pressure limits: closes at 260 psi and opens at 475 psi
• Maximum pressure rating of 1250 psi for durability
• Brown round female connector with two male pin terminals
• Metal housing for enhanced strength and heat resistance
• Bolt-on mount type with 10 mm thread diameter for secure installation
• Specific fit for Chrysler, Dodge, Jeep, and Ram models including 300, 1500, Grand Cherokee, Wrangler, and more

Technical Details and Compatibility

The Dorman 904-620 HVAC Pressure Switch is specifically designed for vehicles using R134a refrigerant, ensuring compatibility with many Chrysler, Dodge, Jeep, and Ram models such as the Dodge Charger, Jeep Wrangler JK, Ram 1500 Classic, and Chrysler Pacifica. This switch operates at 12 volts and features a pressure limit that closes at 260 psi and opens at 475 psi, protecting the A/C system from pressure extremes. The metal housing provides durability under high-temperature conditions, while the brown round female connector with two male pin terminals ensures a secure electrical connection. The bolt-on mount with a 10 mm thread diameter allows for straightforward replacement without the need for additional mounting hardware.

Common Applications and Problem Resolution

• Prevents A/C compressor damage by monitoring refrigerant pressure
• Stops system operation when pressure is too low or too high
• Helps maintain consistent cabin cooling performance
• Addresses issues related to intermittent A/C compressor cycling
• Replaces faulty pressure switches causing A/C system failure

Installation Notes and Tips

Installation of the Dorman 904-620 HVAC Pressure Switch requires a bolt-on mounting using the existing 10 mm threaded port. Ensure the vehicle’s A/C system is depressurized before removal to avoid refrigerant release. The switch’s brown round female connector should be connected securely to the vehicle’s wiring harness. No mounting bracket is included, so use the original hardware. Verify compatibility with your specific Chrysler, Dodge, Jeep, or Ram model before installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The 904-620 HVAC Pressure Switch undergoes rigorous quality control to ensure proper function under demanding conditions. This part comes with a limited warranty covering defects in material and workmanship, offering peace of mind for your vehicle’s HVAC system maintenance.