HomeHVAC > A/C Flow RestrictorsUniversal Air EX5900C A/C Expansion Valve - Rear
Part #: EX5900C

Universal Air EX5900C A/C Expansion Valve - Rear

Thermal Expansion Valve, Rear
42 vehicles fit this part
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Thermal Expansion Valve, Rear
Fitment: Chevrolet, GMC, Isuzu, Buick, and Nissan, Trailblazer, Envoy, Ascender, Rainier, Trailblazer EXT, Envoy XL, Envoy XUV, and Frontier
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Reliable A/C Expansion Valve for Select Buick, Chevrolet, GMC, Isuzu, and Nissan Models

The Universal Air Thermal Expansion Valve EX5900C is designed to regulate refrigerant flow in your vehicle's air conditioning system. Engineered for precise performance, this A/C expansion valve is compatible with various Buick, Chevrolet, GMC, Isuzu, and Nissan models, ensuring efficient cooling and system reliability.

  • Compatible with Buick Ascender, Chevrolet Trailblazer, GMC Envoy, Isuzu Ascender, and Nissan Frontier models
  • Part number EX5900C for accurate identification and fitment
  • Controls refrigerant flow to optimize A/C system performance
  • Designed for HVAC A/C flow restrictor applications
  • Manufactured by Universal Air, a trusted brand in automotive HVAC components

About the Thermal Expansion Valve Product Line

The Thermal Expansion Valve line by Universal Air focuses on precise control of refrigerant flow within automotive air conditioning systems. This product line is engineered to maintain optimal pressure and temperature balance, which is critical for efficient A/C operation. The EX5900C valve is part of this line, providing reliable performance for specific vehicle models requiring exact flow restriction.

Product Details and Compatibility

The EX5900C A/C expansion valve is specifically designed to fit a range of vehicles including the Buick Ascender, Chevrolet Trailblazer and Trailblazer EXT, GMC Envoy series (Envoy, Envoy XL, Envoy XUV), Isuzu Ascender, and Nissan Frontier. This ensures that the valve meets the exact specifications required for these models’ HVAC systems. By regulating the refrigerant flow, it helps maintain consistent cabin temperatures and prevents system overload.

Common Applications and Issues Addressed

  • Restores proper refrigerant flow in A/C systems
  • Prevents overheating and freezing of the evaporator
  • Eliminates inconsistent cooling performance
  • Reduces compressor strain and potential failure
  • Helps maintain system pressure balance for efficient operation

Installation Notes and Tips

Installation of the EX5900C should be performed by a qualified technician familiar with HVAC systems. Ensure the system is properly evacuated and recharged with the correct refrigerant type after valve replacement. Verify compatibility with the vehicle’s make and model before installation to avoid fitment issues. Proper torque specifications should be followed to prevent leaks.

Quality Assurance and Warranty

Universal Air manufactures the EX5900C expansion valve to meet industry standards for durability and performance. While specific warranty details are not provided, Universal Air products typically come with a limited warranty against defects in materials and workmanship. For warranty information, consult the product documentation or contact the manufacturer directly.

This part fits 42 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
2009ChevroletTrailblazerRearThermal Expansion Valve
2009GMCEnvoySLT4.2LL6RearCompatible with rear A/C.; Thermal Expansion Valve
2009GMCEnvoySLE4.2LL6RearCompatible with rear A/C.; Thermal Expansion Valve
2008ChevroletTrailblazerRearThermal Expansion Valve
2008GMCEnvoySLE4.2LL6RearCompatible with rear A/C.; Thermal Expansion Valve
2008GMCEnvoySLT4.2LL6RearCompatible with rear A/C.; Thermal Expansion Valve
2008IsuzuAscenderRearThermal Expansion Valve
2007BuickRainierRearThermal Expansion Valve
2007ChevroletTrailblazerRearThermal Expansion Valve
2007GMCEnvoyRearCompatible with rear A/C.; Thermal Expansion Valve
2007IsuzuAscenderRearThermal Expansion Valve
2006BuickRainierRearThermal Expansion Valve
2006ChevroletTrailblazerRearThermal Expansion Valve
2006ChevroletTrailblazer EXTRearThermal Expansion Valve
2006GMCEnvoyRearCompatible with rear A/C.; Thermal Expansion Valve
2006GMCEnvoy XLRearCompatible with rear A/C.; Thermal Expansion Valve
2006IsuzuAscenderRearThermal Expansion Valve
2005BuickRainierRearThermal Expansion Valve
2005ChevroletTrailblazerRearThermal Expansion Valve
2005ChevroletTrailblazer EXTRearThermal Expansion Valve
2005GMCEnvoyRearCompatible with rear A/C.; Thermal Expansion Valve
2005GMCEnvoy XLRearCompatible with rear A/C.; Thermal Expansion Valve
2005GMCEnvoy XUVRearCompatible with rear A/C.; Thermal Expansion Valve
2005IsuzuAscenderRearThermal Expansion Valve
2004BuickRainierRearThermal Expansion Valve
2004ChevroletTrailblazerRearThermal Expansion Valve
2004ChevroletTrailblazer EXTRearThermal Expansion Valve
2004GMCEnvoyRearCompatible with rear A/C.; Thermal Expansion Valve
2004GMCEnvoy XLRearCompatible with rear A/C.; Thermal Expansion Valve
2004GMCEnvoy XUVRearCompatible with rear A/C.; Thermal Expansion Valve
2004IsuzuAscenderRearThermal Expansion Valve
2003ChevroletTrailblazerRearThermal Expansion Valve
2003ChevroletTrailblazer EXTRearThermal Expansion Valve
2003GMCEnvoyRearCompatible with rear A/C.; Thermal Expansion Valve
2003GMCEnvoy XLRearCompatible with rear A/C.; Thermal Expansion Valve
2003IsuzuAscenderRearThermal Expansion Valve
2002ChevroletTrailblazerN/AThermal Expansion Valve
2002ChevroletTrailblazer EXTN/AThermal Expansion Valve
2002GMCEnvoyRearThermal Expansion Valve
2002GMCEnvoy XLRearThermal Expansion Valve
2001NissanFrontierN/AInternally Equalized; To 07/01/2001; Thermal Expansion Valve
1998NissanFrontierN/AInternally Equalized; Thermal Expansion Valve

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.