Universal Air EX50811C A/C Expansion Valve - Rear

Brand	Universal Air EX50811C
Position	Rear
Product line	Block Expansion Valve
Fits	Buick, Chevrolet, GMC, and Saturn · 19 vehicles

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

Universal Air HVAC flow restrictor for precise refrigerant control.

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Block Expansion Valve for Rear A/C Service

Universal Air EX50811C is a block expansion valve for rear HVAC systems with rear auxiliary A/C. It is listed for select Buick, Chevrolet, GMC, and Saturn applications that use a rear-mounted block expansion valve in the air conditioning circuit.

Key Features

Part number: EX50811C
Brand line: Block Expansion Valve
Rear A/C flow restrictor for HVAC service
Fits rear auxiliary A/C applications with a block-style expansion valve
Direct fitment coverage for select GM crossover and SUV platforms

Vehicle Fitment

Fits 2008-2012 Buick Enclave, rear, with Rear Auxiliary A/C; Block Expansion Valve
Fits 2009-2012 Chevrolet Traverse, rear, with Rear Auxiliary A/C; Block Expansion Valve
Fits 2007-2012 GMC Acadia, rear, with Rear Auxiliary A/C; Block Expansion Valve
Fits 2007-2010 Saturn Outlook, rear, Block Expansion Valve

Detailed Description

Universal Air EX50811C is a rear A/C expansion valve used in HVAC systems that regulate refrigerant flow to the evaporator. In rear auxiliary A/C setups, the valve meters refrigerant entering the rear cooling circuit so the system can maintain proper temperature control and stable operation. This part number is listed for Buick Enclave, Chevrolet Traverse, GMC Acadia, and Saturn Outlook rear applications with the specified block-style valve configuration.

This part cross-references no additional part numbers in the provided data.

Common Repair Symptoms

Rear A/C vents blowing warm air
Uneven cooling between front and rear HVAC zones
Restricted refrigerant flow at the rear evaporator
Erratic rear cabin temperature control
System performance issues tied to a failed block expansion valve

Installation Notes

Verify the rear HVAC configuration and valve style before ordering. Match the vehicle year, make, model, and rear application exactly to the listed fitment for EX50811C. Proper evacuation, recovery, and recharge procedures are required after A/C component replacement, and the system should be inspected for contamination or related wear before installation.

Quality Assurance

Universal Air identifies EX50811C as part of its Block Expansion Valve line for rear A/C service applications. Confirm the OE-style configuration against the existing component and vehicle build details before installation.

This part fits 19 vehicles

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

Year	Make	Model	Position	Notes
2012	Buick	Enclave	Rear	with Rear Auxiliary A/C; Block Expansion Valve
2012	Chevrolet	Traverse	Rear	with Rear Auxiliary A/C; Block Expansion Valve
2012	GMC	Acadia	Rear	with Rear Auxiliary A/C; Block Expansion Valve
2011	Buick	Enclave	Rear	with Rear Auxiliary A/C; Block Expansion Valve
2011	Chevrolet	Traverse	Rear	with Rear Auxiliary A/C; Block Expansion Valve
2011	GMC	Acadia	Rear	with Rear Auxiliary A/C; Block Expansion Valve
2010	Buick	Enclave	Rear	with Rear Auxiliary A/C; Block Expansion Valve
2010	Chevrolet	Traverse	Rear	with Rear Auxiliary A/C; Block Expansion Valve
2010	GMC	Acadia	Rear	with Rear Auxiliary A/C; Block Expansion Valve
2010	Saturn	Outlook	Rear	Block Expansion Valve
2009	Buick	Enclave	Rear	with Rear Auxiliary A/C; Block Expansion Valve
2009	Chevrolet	Traverse	Rear	with Rear Auxiliary A/C; Block Expansion Valve
2009	GMC	Acadia	Rear	with Rear Auxiliary A/C; Block Expansion Valve
2009	Saturn	Outlook	Rear	Block Expansion Valve
2008	Buick	Enclave	Rear	with Rear Auxiliary A/C; Block Expansion Valve
2008	GMC	Acadia	Rear	with Rear Auxiliary A/C; Block Expansion Valve
2008	Saturn	Outlook	Rear	Block Expansion Valve
2007	GMC	Acadia	Rear	with Rear Auxiliary A/C; Block Expansion Valve
2007	Saturn	Outlook	Rear	Block Expansion Valve
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