Mercedes Sprinter A/C Expansion Valve – Genuine | VS30 | #0008354300 (2019–2025)

A failed A/C expansion valve on a VS30 Sprinter collapses the refrigerant flow the evaporator needs to produce cold air — resulting in a system that blows warm, freezes up at the evaporator, or cycles erratically while the compressor works overtime against an improperly metered refrigerant supply. This is the Genuine A/C expansion valve for VS30 Sprinters, a direct replacement that restores precise refrigerant metering and consistent cabin cooling performance.

What This Part Does

The A/C expansion valve is a precision metering device that sits at the inlet of the evaporator and controls the flow of high-pressure liquid refrigerant into the low-pressure evaporator core. As refrigerant passes through the valve's orifice, it undergoes a rapid pressure drop that causes it to flash into a cold, low-pressure vapor — absorbing heat from the air passing over the evaporator fins and producing the cold air that enters the cabin. The valve modulates its opening continuously based on evaporator outlet temperature and pressure, keeping refrigerant flow matched to the current heat load. When the valve sticks open, the evaporator floods with refrigerant, causing ice buildup and reduced airflow. When it sticks closed or becomes restricted, refrigerant flow drops, evaporator temperatures rise, and the cabin stops cooling.

Common Symptoms of a Failing A/C Expansion Valve

• A/C that blows warm air despite a fully charged system and an operating compressor
• Evaporator icing — reduced airflow from vents accompanied by ice on the evaporator core or inlet lines
• Compressor cycling on and off abnormally fast or running continuously without adequate cooling
• A/C performance that fluctuates — works well initially then deteriorates as the valve warms up
• Frost or ice visible on the low-side A/C lines near the firewall

When to Replace

Replace when the expansion valve is confirmed as the fault source after verifying refrigerant charge, compressor output, and condenser airflow. Also replace whenever the evaporator is being serviced or removed — the expansion valve is directly accessible during evaporator work and should be renewed at the same time to avoid a repeat A/C teardown. Always replace the receiver/drier when opening the A/C system for expansion valve service.

VS30 Specific — VIN Verification Required

This is the front expansion valve for the primary HVAC system on VS30 Sprinters. It is not compatible with NCV3 Sprinters (2007–2018). A/C system configuration and expansion valve location vary by trim and HVAC setup — always verify by VIN before ordering. Contact us and we'll confirm fitment before you buy.

Fitment

• 2019–2025 Mercedes-Benz Sprinter 1500 – Front A/C (VS30)
• 2019–2025 Mercedes-Benz Sprinter 2500 – Front A/C (VS30)
• 2019–2025 Mercedes-Benz Sprinter 3500 – Front A/C (VS30)
• 2019–2025 Mercedes-Benz Sprinter 3500XD – Front A/C (VS30)

✔ Front (primary HVAC) only — rear A/C systems use a different expansion valve ✔ Always replace receiver/drier when opening the A/C system

Part Numbers

• Mercedes OEM: 0008354300 / A0008354300 / 000-835-43-00
• Manufacturer: Genuine — 0751.4300
• SKU: 0008354300