Universal Air
Block Expansion Valve

Universal Air EX10578C A/C Expansion Valve

Brand Universal Air EX10578C
Product line Block Expansion Valve
Fits Cadillac, Chevrolet, and Buick · 16 vehicles

Block expansion valve. Regulates refrigerant flow in the A/C system.

Universal Air HVAC flow restrictor for air conditioning systems.

$29.00Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Order total $29.00
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Block Expansion Valve for A/C Flow Control

The Universal Air Block Expansion Valve, part number EX10578C, is an A/C expansion valve for select Cadillac, Chevrolet, and Buick applications. It is used in the HVAC refrigerant circuit to regulate flow through the evaporator system and support proper cooling performance.

Key Features

  • Universal Air Block Expansion Valve for automotive A/C systems
  • Part number EX10578C for easy identification
  • Fits 2019-2021 Cadillac XT4, N/A
  • Fits 2016-2021 Chevrolet Malibu, N/A
  • Fits 2017-2019 Buick LaCrosse, N/A
  • Direct-fit application for listed vehicles with block expansion valve configuration

Product Details

This Universal Air A/C expansion valve is built for vehicles that use a block-style refrigerant metering component at the evaporator. In the HVAC system, the expansion valve controls refrigerant delivery so the evaporator can absorb heat efficiently. If you are searching for a Cadillac XT4 expansion valve, Chevrolet Malibu A/C expansion valve, or Buick LaCrosse block expansion valve, EX10578C matches the listed applications.

Universal Air EX10578C is a fitment-specific replacement for 2019-2021 Cadillac XT4, 2016-2021 Chevrolet Malibu, and 2017-2019 Buick LaCrosse. This part number EX10578C is the reference to use when verifying the correct block expansion valve for these vehicles.

Common Issues This Part Can Address

  • Weak or inconsistent cabin cooling
  • Improper refrigerant metering at the evaporator
  • A/C performance loss caused by a worn expansion valve
  • Temperature fluctuations from restricted refrigerant flow
  • HVAC system service needs on listed Cadillac, Chevrolet, and Buick models

Installation Notes

Confirm the vehicle’s A/C system uses a block expansion valve before ordering. Match the part number EX10578C to the original component and verify the year, make, and model against the fitment list. After installation, evacuate and recharge the system according to factory service procedures.

Quality Assurance

Universal Air supplies HVAC service parts for automotive air conditioning repairs. EX10578C is cataloged for the listed applications to support accurate replacement selection.

This part fits 16 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2021CadillacXT4————N/ABlock Expansion Valve
2021ChevroletMalibu————N/ABlock Expansion Valve
2020CadillacXT4————N/ABlock Expansion Valve
2020ChevroletMalibu————N/ABlock Expansion Valve
2019BuickLaCrosse————N/ABlock Expansion Valve
2019CadillacXT4————N/ABlock Expansion Valve
2019ChevroletMalibu————N/ABlock Expansion Valve
2018BuickLaCrosse————N/ABlock Expansion Valve
2018ChevroletMalibu————N/ABlock Expansion Valve
2017BuickLaCrosse————N/ABlock Expansion Valve
2017ChevroletMalibuLS1.5LL4GASN/ABlock Expansion Valve
2017ChevroletMalibuPremier2.0LL4GASN/ABlock Expansion Valve
2017ChevroletMalibuLT1.5LL4GASN/ABlock Expansion Valve
2017ChevroletMalibuL1.5LL4GASN/ABlock Expansion Valve
2017ChevroletMalibuHybrid1.8LL4ELECTRIC/GASN/ABlock Expansion Valve
2016ChevroletMalibu————N/ABlock Expansion Valve