How to Replace the Expansion Valve in a Dodge Magnum's Air Conditioning System?

To replace the expansion valve in your vehicle's air conditioning system, you will need to follow these steps. First, have the air conditioning system discharged by an automotive air conditioning technician. Then, disconnect the cable from the negative battery terminal. Remove the bracket securing the refrigerant lines to the left shock tower. Disconnect the refrigerant lines at the firewall by removing the nut that secures the line fitting to the expansion valve. Cap or plug the line openings to prevent dirt or moisture from entering the system. Remove the two mounting screws that secure the expansion valve. Detach the expansion valve from the evaporator fitting and discard the old O-rings. During reassembly, make sure to use new R-134a compatible O-rings. Finally, have the system evacuated, recharged, and leak-tested by the shop that discharged it.

Genuine Dodge Magnum A/C Expansion Valve

Air Conditioning Expansion Valve

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Dodge Magnum Valve-Expansion
Part Number: 5139687AA
$113.93 MSRP: $169.00
You Save: $55.07 (33%)
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Product Specifications
- Other Name: Valve Expansion; Expansion Valve
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
Fits the following Vehicles:
- 2005-2008 Dodge Magnum | R/T AWD, R/T RWD, SE RWD, SRT8 RWD, SXT AWD, SXT RWD | 6 Cyl 2.7L, 6 Cyl 3.5L, 8 Cyl 5.7L, 8 Cyl 6.1L

Dodge Magnum A/C Expansion Valve

The A/C Expansion Valve in Dodge Magnum is a very important component since it regulates the flow of the refrigerant so that the air conditioning system will work correctly. Through controlling the flow of the said refrigerant, the A/C Expansion Valve is responsible in maintaining the efficiency and capability of the entire A/C system. In this specification, there are countless A/C Expansion Valves that has been implemented in different Dodge Magnum models within the years, depending on the operational requirements of the vehicle. Typically these works by modifying the amount of refrigerant that travels through the system based on some parameter that might be different for each model. The main difference about these types is the approach used in managing refrigerant flow hence the overall efficiency of the A/C system on Dodge Magnum.

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Dodge Magnum A/C Expansion Valve Parts Questions & Experts Answers

Valve-Expansion
5139687AA
Q: How to Replace the Expansion Valve in a Dodge Magnum's Air Conditioning System?
A: To replace the expansion valve in your vehicle's air conditioning system, you will need to follow these steps. First, have the air conditioning system discharged by an automotive air conditioning technician. Then, disconnect the cable from the negative battery terminal. Remove the bracket securing the refrigerant lines to the left shock tower. Disconnect the refrigerant lines at the firewall by removing the nut that secures the line fitting to the expansion valve. Cap or plug the line openings to prevent dirt or moisture from entering the system. Remove the two mounting screws that secure the expansion valve. Detach the expansion valve from the evaporator fitting and discard the old O-rings. During reassembly, make sure to use new R-134a compatible O-rings. Finally, have the system evacuated, recharged, and leak-tested by the shop that discharged it.