Vemo V15-77-0023 A/C Expansion Valve

VEMO A/C Expansion Valve for Audi HVAC Repair

The Vemo V15-77-0023 is an A/C expansion valve for Audi HVAC systems, built to regulate refrigerant flow through the evaporator circuit. With compact dimensions of 84 mm length, 44 mm width, and 42 mm height, it is sized for direct replacement service in select Audi Q5, A4, A4 Quattro, S4, S5, A5, and A5 Quattro applications.

Key Features

• Part number: V15-77-0023
• VEMO aftermarket A/C expansion valve
• Height: 42 mm
• Length: 84 mm
• Width: 44 mm
• Weight: 0.151 kg
• Packaged dimensions: 9 cm depth, 9.2 cm height, 4.9 cm width
• Cross-reference: Global Parts Distributors LLC 3411571
• OE reference match for Audi part numbers 8K0 820 679 A and 8K0 820 679 B

Product Details

This VEMO HVAC flow restrictor is an A/C expansion valve used to meter refrigerant entering the evaporator, helping the system maintain proper cooling performance and pressure balance. The V15-77-0023 is listed for select 2008-2016 Audi models, including Audi Q5, Audi A4, Audi A4 Quattro, Audi S4, Audi S5, Audi A5, and Audi A5 Quattro. VEMO’s VEMO line focuses on replacement parts for European vehicle systems, and this valve is cataloged with O-ring service references in the fitment data for several applications.

What It Is Used For

• Restoring refrigerant metering when the original expansion valve is restricted or worn
• Addressing uneven cabin cooling in Audi A/C systems
• Correcting pressure control issues in the evaporator circuit
• Replacing a leaking or contaminated HVAC expansion valve
• Supporting service work on Audi Q5 and related Audi sedan and coupe platforms

Installation Notes and Tips

Verify OE number match before installation, especially on Audi Q5 applications that reference 8K0820679B. Confirm the vehicle year and model against the fitment list, since coverage varies by platform and production date. Inspect the surrounding A/C components, seals, and refrigerant circuit condition during service to help prevent repeat failures.

Quality Assurance

VEMO supplies aftermarket replacement components for European vehicle systems, and this part is cataloged to match specific OE references for the listed Audi applications. Part number V15-77-0023 should be verified against the vehicle’s original expansion valve number before ordering or installation.