Nissens 999386 A/C Expansion Valve

Nissens 999386 A/C Expansion Valve

The Nissens 999386 A/C expansion valve regulates refrigerant flow in the air conditioning system to help maintain proper evaporator performance. Built from aluminum and specified for R134A systems, it is a direct-fit HVAC flow restrictor for select Jaguar applications, including Jaguar F-Type, XK, XKR, and XKR-S models.

• Aluminum construction for HVAC service applications
• Designed for R134A refrigerant systems
• Block-style A/C expansion valve design
• O-rings included; O-ring quantity listed as 4
• Liquid and suction fitting thread dimensions listed for application matching
• Compatible with select Jaguar F-Type, XK, XKR, and XKR-S fitments

Fitment Details

• Fits 2022-2024 Jaguar F-Type, N/A. Notes: Inlet 1: 29mm, Inlet 2: 25.6 mm, Outlet 1: 15.5 mm, Outlet 2: 18.3 mm
• Fits 2014-2021 Jaguar F-Type, N/A
• Fits 2009-2015 Jaguar XK, N/A
• Fits 2009-2015 Jaguar XKR, N/A
• Fits 2012-2015 Jaguar XKR-S, N/A

Detailed Description

This Nissens 999386 expansion valve is used to meter refrigerant into the evaporator so the A/C system can maintain stable cooling performance. It is specified as a block-type valve for R134A systems and uses aluminum construction for service in the HVAC circuit. The listed fitting thread diameters and included O-rings help support accurate replacement on Jaguar F-Type, Jaguar XK, Jaguar XKR, and Jaguar XKR-S vehicles. This part cross-references OE numbers 6W8319D695AA and C2P8263 for the same application.

Common A/C Issues It Can Address

• Inconsistent cabin cooling output
• Restricted refrigerant metering at the evaporator
• Incorrect A/C system pressure behavior
• Warm air from vents during compressor operation
• Service replacement for a worn or leaking expansion valve

Installation Notes and Tips

Verify refrigerant type, fitting dimensions, and vehicle year before installation. Replace the valve only after the system has been properly evacuated and inspected for contamination, leaks, and damaged seals. Confirm the Jaguar F-Type, XK, XKR, or XKR-S application against the listed notes, especially on 2022-2024 Jaguar F-Type models with the specified inlet and outlet measurements.

Quality Assurance

Nissens develops and manufactures thermal management components to controlled quality standards, and this part reflects that product focus for aftermarket HVAC service.