AC Expansion Valve and Expansion Valve Replacement Parts for Cars and Trucks

An expansion valve meters refrigerant into your evaporator at exactly the rate your AC system needs, and getting that rate wrong causes weak cooling just as often as a low refrigerant charge does. CBT Auto Parts stocks expansion valve and AC expansion valve units for cars and trucks.

Every expansion valve replacement here is OEM grade or built to OEM specification, so flow rate and fitting size match the original. Confirm fitment by year, make, and model, then add a condenser or evaporator from the wider Cooling, HVAC and Climate Control Parts range. Orders ship fast worldwide, with support on hand if you're unsure which valve fits.

Expansion Valves

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FAQs

1. What are the signs of a failing expansion valve?

Cooling that's inconsistent between idle and highway speed, frost forming on the valve itself, or a hissing sound near the valve are the clearest signs

2. What's the difference between an expansion valve and an orifice tube?

An orifice tube meters refrigerant at one fixed rate with no moving parts, while an expansion valve adjusts that rate as conditions change.

3. Why is a faulty expansion valve often misdiagnosed?

Its symptoms, weak or inconsistent cooling, overlap heavily with a simple low refrigerant charge, so the system often gets recharged repeatedly without fixing the real issue.

4. Is a truck expansion valve different from a car one?

Often, yes, trucks with larger AC systems or rear auxiliary AC typically need higher flow capacity than a passenger car valve provides.

5. Does the AC system need to be recharged after replacing the expansion valve?

Yes, the system has to be evacuated to install the valve and then recharged to the correct refrigerant amount and oil type afterward.