Nissens 999251 A/C Expansion Valve

Nissens A/C Expansion Valve 999251

The Nissens 999251 A/C expansion valve is built for precise refrigerant control in the HVAC system. It is a direct-fit style replacement for select Volvo C40 Recharge, XC40, and XC40 Recharge applications using R134A or R1234YF refrigerant.

Key Features

• Aluminum construction for HVAC service durability
• Calibrated cross-type charge design for controlled refrigerant flow
• Works with R134A and R1234YF refrigerant systems
• Includes O-rings and mounting bolts where applicable
• OE-matching pressure performance, tightness, opening, set-point setting, and inner finish

Product Details

This thermal expansion valve regulates refrigerant entering the evaporator, helping the air conditioning system maintain proper cooling performance and stable outlet temperatures. Nissens validates each valve through testing focused on pressure performance, sealing, opening characteristics, set-point accuracy, and internal finish to meet OE matching standards. This part number 999251 is a practical replacement choice for Volvo XC40 A/C repair work and Volvo C40 Recharge HVAC service.

This part cross-references Monroe Shocks & Struts (e.g., AV6N19849AA, AV6N19849AB) for the same application.

Vehicle Fitment

• Fits 2022-2024 Volvo C40 Recharge, N/A. Inlet 1: 37mm, Inlet 2: 25 mm, Outlet 1: 11.8 mm, Outlet 2: 18 mm
• Fits 2019-2024 Volvo XC40, N/A. Inlet 1: 37mm, Inlet 2: 25 mm, Outlet 1: 11.8 mm, Outlet 2: 18 mm
• Fits 2021-2024 Volvo XC40 Recharge, N/A. Inlet 1: 37mm, Inlet 2: 25 mm, Outlet 1: 11.8 mm, Outlet 2: 18 mm

Installation Notes

Verify refrigerant type, port dimensions, and system cleanliness before installation. Replace the O-rings during service, torque the mounting bolts to specification, and evacuate and recharge the system according to the vehicle service procedure. Confirm the valve orientation and line connections match the original layout before closing the HVAC system.

Quality Assurance

Nissens manufactures this expansion valve to strict OE matching standards and tests it for pressure control, sealing integrity, opening behavior, set-point accuracy, and internal finish. The result is a service part engineered for consistent HVAC performance in the listed Volvo applications.