Image is for illustration purposes only. Actual part may vary.

3411566

EXPANSION VALVE

This is an air conditioning block-type expansion valve, also called a TXV. It regulates the flow of R134a refrigerant into the evaporator in heavy-duty truck HVAC systems. When the valve fails—often stuck open or closed—the A/C will not cool properly. It is commonly replaced during compressor failure or when the system is opened for major repairs. This valve fits many Kenworth and Peterbilt trucks from model years 2013–2015.