Nissens 999228 A/C Expansion Valve - Front

Nissens A/C Expansion Valve for BMW HVAC Service

Nissens part 999228 is a block-style A/C expansion valve built with an aluminum body and R134A refrigerant compatibility. It is a direct-fit HVAC flow restrictor for select BMW 7 Series applications, including BMW 745i, 745Li, 750i, 750Li, 760i, and 760Li models.

Key Features

• Block-style A/C expansion valve for HVAC refrigerant control
• Aluminum construction for corrosion resistance and thermal stability
• Designed for R134A refrigerant systems
• O-rings included for sealing at installation
• Fits select BMW 745i, 745Li, 750i, 750Li, 760i, and 760Li applications
• Part number 999228 for accurate ordering and service lookup

Detailed Description

Nissens 999228 is an A/C expansion valve used to regulate refrigerant flow through the air conditioning system, helping maintain proper evaporator performance and cabin cooling balance. The aluminum block design supports reliable fitment in the HVAC circuit, while the listed inlet and outlet thread dimensions help match the correct service application. This part cross-references UAC EX10238C for the same application.

Compatible With BMW 745i, BMW 745Li, BMW 750i, BMW 750Li, BMW 760i, and BMW 760Li models across the 2002-2009 range, this Nissens expansion valve is a practical replacement for BMW 7 Series HVAC repair work. Use part number 999228 when verifying the correct component for your vehicle.

What It Helps Address

• Weak or inconsistent cabin cooling
• Incorrect refrigerant metering at the evaporator
• A/C performance loss caused by a worn valve
• Refrigerant sealing issues at the valve connection points
• HVAC service needs on BMW 7 Series R134A systems

Installation Notes and Tips

• Confirm refrigerant type before installation; this valve is listed for R134A systems.
• Inspect the mating surfaces and replace damaged seals during service.
• Verify thread dimensions and block-style configuration against the original part.
• Evacuate and recharge the A/C system according to factory service procedures after installation.
• Check for leaks and confirm proper vent temperature once the system is back in operation.

Quality Assurance

Nissens develops and manufactures thermal management components to consistent quality standards, with ongoing product development for aftermarket applications. Part 999228 is built to support dependable HVAC service on the listed BMW models.