Nissens 9991057 A/C Expansion Valve - Front

Nissens A/C Expansion Valve for Sprinter

The Nissens 9991057 A/C expansion valve is a block-style thermal expansion valve built for precise refrigerant control in the front HVAC system. It is compatible with Mercedes-Benz Sprinter applications from 2019-2025, including Sprinter 1500, Sprinter 2500, Sprinter 3500, and Sprinter 3500XD front positions.

• Block-style A/C expansion valve for front HVAC service
• Aluminum construction
• Designed for R134A and R1234YF refrigerant systems
• O-rings included for installation sealing
• Mounting hardware included where applicable
• OE-matching pressure performance, tightness, opening, set-point setting, and internal finish

Detailed Product Information

Nissens part number 9991057 is engineered as a thermal expansion valve for Mercedes-Benz Sprinter front air conditioning systems. It regulates refrigerant flow into the evaporator, helping maintain stable cooling performance under changing load and temperature conditions. The aluminum block design and OE-level validation standards support accurate refrigerant metering for service replacement on 2019-2025 Mercedes-Benz Sprinter 2500, Sprinter 3500, Sprinter 3500XD, Sprinter, and Sprinter 1500 models.

This part cross-references 0008354300 for the same application.

What This Part Helps Address

• Weak or inconsistent cabin cooling
• Incorrect refrigerant flow into the evaporator
• Expansion valve leakage at the sealing surfaces
• Pressure control issues in the front A/C circuit
• Service replacement for a worn Mercedes-Benz Sprinter expansion valve

Installation Notes and Tips

Verify refrigerant type before installation; this valve is listed for R134A and R1234YF systems. Replace the valve only after confirming the front HVAC location and matching the vehicle application by year and model. Clean mating surfaces carefully, use the included O-rings, and follow the correct evacuation and recharge procedure after service. Part number 9991057 should be matched to the original valve style and system configuration before installation.

Quality Assurance

Nissens manufactures this expansion valve to strict OE-matching standards and validates pressure performance, tightness, opening behavior, set-point setting, and internal finish during production. Part number 9991057 is built to support consistent service quality for Mercedes-Benz Sprinter HVAC repairs.