Vemo V30-77-0023 A/C Expansion Valve

VEMO A/C Expansion Valve for Mercedes-Benz HVAC Service

The Vemo V30-77-0023 is an A/C expansion valve for Mercedes-Benz HVAC systems, built to regulate refrigerant flow through the evaporator circuit. With a compact 84 mm length, 54 mm width, and 27 mm height, it is a direct-fit service part for select Mercedes-Benz B200, C-Class, S-Class, and SLK models.

VEMO product line parts are focused on OE-style replacement fitment for European vehicles, making this expansion valve a practical choice when servicing an A/C system that needs accurate refrigerant metering and sealed connections.

• Part number: V30-77-0023
• A/C expansion valve for Mercedes-Benz HVAC systems
• Includes gaskets/seals for the installation interface
• Compact housing dimensions: 84 mm long, 54 mm wide, 27 mm high
• Fits select Mercedes-Benz B200, C240, C320, C32 AMG, S430, S55 AMG, S600, SLK230, SLK32 AMG, SLK320, C230, and S500 applications
• Cross-reference: Mercedes-Benz A 169 830 03 84, A 220 830 03 84

Detailed Fitment and Function

This VEMO V30-77-0023 expansion valve controls refrigerant delivery into the evaporator, helping the A/C system maintain proper pressure balance and cooling performance. It fits 2006-2011 Mercedes-Benz B200, 2001-2005 Mercedes-Benz C240, 2001-2005 Mercedes-Benz C320, 2002-2004 Mercedes-Benz C32 AMG, 2000-2004 Mercedes-Benz S430, 2001-2004 Mercedes-Benz S55 AMG, 2003-2004 Mercedes-Benz S600, 2003-2004 Mercedes-Benz SLK230, 2002-2004 Mercedes-Benz SLK32 AMG, 2001-2004 Mercedes-Benz SLK320, 2002 Mercedes-Benz C230, 2001-2002 Mercedes-Benz SLK230, and 2000 Mercedes-Benz S500. The part number V30-77-0023 is also useful when verifying the correct Mercedes-Benz HVAC flow restrictor replacement before service begins.

What This Part Helps Address

• Weak or inconsistent cabin cooling
• Refrigerant flow control issues at the evaporator
• A/C performance loss after expansion valve wear or contamination
• Seal-related leaks at the valve connection points
• Service replacement needs on Mercedes-Benz HVAC systems

Installation Notes and Tips

Confirm the original valve shape, port layout, and OE number before installation. Replace the gaskets/seals during service, evacuate and recharge the system correctly, and inspect the A/C circuit for contamination or moisture before returning the vehicle to operation. This part is listed for N/A position applications and should be matched to the vehicle’s exact HVAC configuration.

Quality Assurance

VEMO is used for European vehicle replacement parts with OE-style application matching. Verify fitment against the vehicle’s original part number and HVAC configuration before installation. Part number V30-77-0023 is referenced for select Mercedes-Benz B200, C240, C320, S430, SLK320, and related applications.