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TX Valve

TRP pride themselves on delivering quality products at competitive pricing and the TRP Thermal Expansion (TX) Valves are no exception. TRP TX Valves are responsible for regulating air conditioning refrigerant into your trucks evaporator core to keep cabin temperatures cool.

Given the fine tolerances for effective function of the TX Valve, it is always advised that when repair of your air conditioning system is required that the receiver dryer (that removes moisture from the system) AND TX valve are changed.  You can rely on TRP for quality replacement parts.


  • Great Value Alternative to OEM Part
  • Manufactured to OEM Specifications
  • 12-Month Warranty





Features & Benefits:

  • Manufactured to OE specifications to operate in harmony with your Air Conditioning system
  • Great value alternative to OE product saving money each time a repair is required on your AC System
  • Compliments existing TRP AC products including air conditioning compressors and receiver dryers making repairs more affordable
  • 12-month warranty standard on all TRP products gives you peace of mind on the road


PART  NO. DESCRIPTION GENUINE EQUIVALENT APPLICATION*
TRP440TX TX Valve KWAIR 329-440 Kenworth Pre 2010
TRP997TX TX Valve KW  25188997 Kenworth 2010 – current (exc 2.1M cab Models)

* Specific Application should be discussed with your TRP store

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