HomeHVAC > A/C Flow RestrictorsUniversal Air EX5891C A/C Expansion Valve - Rear
Part #: EX5891C

Universal Air EX5891C A/C Expansion Valve - Rear

Block Expansion Valve, Rear
9 vehicles fit this part
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Block Expansion Valve, Rear
Fitment: Pontiac, Chevrolet, and Oldsmobile, Montana, Venture, and Silhouette
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Reliable A/C Expansion Valve for Oldsmobile Montana and Pontiac Silhouette

The Universal Air Block Expansion Valve EX5891C is designed to regulate refrigerant flow in your vehicle's air conditioning system. Specifically engineered for Oldsmobile Montana and Pontiac Silhouette models, this A/C expansion valve ensures consistent cooling performance and system efficiency.

Key Features of the Universal Air EX5891C

  • Compatible with Oldsmobile Montana and Pontiac Silhouette vehicles
  • Part number EX5891C for precise identification
  • Controls refrigerant flow to optimize A/C system operation
  • Part of the Universal Air Block Expansion Valve product line
  • Designed for HVAC A/C flow restrictor applications

About the Block Expansion Valve Product Line

The Block Expansion Valve line from Universal Air focuses on providing reliable A/C flow restrictors that maintain proper refrigerant metering in automotive HVAC systems. This product line is engineered to meet the specific requirements of various vehicle makes and models, including the Oldsmobile Montana and Pontiac Silhouette, ensuring compatibility and performance within the air conditioning system.

Detailed Product Description

The EX5891C A/C expansion valve plays a critical role in the air conditioning system by regulating the amount of refrigerant entering the evaporator. This regulation helps maintain optimal pressure and temperature, contributing to effective cabin cooling. Designed for use in Oldsmobile Montana and Pontiac Silhouette models, this valve fits directly into the HVAC system as a flow restrictor, ensuring the system operates within manufacturer specifications.

Common Issues Addressed by the EX5891C Expansion Valve

  • Inconsistent or insufficient cabin cooling
  • Fluctuating A/C system pressure
  • Refrigerant flow irregularities causing compressor strain
  • Ice formation on evaporator coils due to improper refrigerant metering
  • Reduced overall A/C system efficiency

Installation Notes and Tips

  • Ensure compatibility with Oldsmobile Montana or Pontiac Silhouette before installation
  • Follow vehicle manufacturer guidelines for A/C system service
  • Replace the expansion valve when signs of wear or malfunction are present
  • Use proper tools to avoid damage to the valve or HVAC components
  • Check for refrigerant leaks and system pressure after installation

Quality Assurance and Warranty

The Universal Air EX5891C expansion valve is manufactured to meet industry standards for HVAC components. While specific warranty details are not provided, Universal Air products typically undergo quality control processes to ensure durability and reliable performance in automotive air conditioning systems.

This part fits 9 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
2005PontiacMontanaBase3.4LV6RearBlock Expansion Valve
2004OldsmobileSilhouetteRearBlock Expansion Valve
2004PontiacMontanaRearBlock Expansion Valve
2003OldsmobileSilhouetteRearBlock Expansion Valve
2003PontiacMontanaRearBlock Expansion Valve
2002OldsmobileSilhouetteRearBlock Expansion Valve
2002PontiacMontanaRearBlock Expansion Valve
2001OldsmobileSilhouetteRearBlock Expansion Valve
2001PontiacMontanaRearBlock 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.