Nissens 999224 A/C Expansion Valve - Front

Reliable A/C Expansion Valve for BMW and Land Rover Models

The Nissens A/C Expansion Valve 999224 is engineered to regulate refrigerant flow precisely in select BMW and Land Rover vehicles. Designed with durable aluminum and compatible with R134a refrigerant, this block-type valve ensures efficient air conditioning system performance.

Key Features of Nissens A/C Expansion Valve 999224

• Constructed from lightweight, corrosion-resistant aluminum
• Compatible with R134a refrigerant systems
• Block-type design for consistent refrigerant flow control
• Includes four O-rings for secure sealing and leak prevention
• Liquid inlet fitting thread diameter: 0.4300 inches
• Liquid outlet fitting thread diameter: 0.5500 inches
• Suction inlet fitting thread diameter: 0.6300 inches
• Suction outlet fitting thread diameter: 0.7900 inches
• Mounting hardware not included

Detailed Description

The Nissens 999224 A/C Expansion Valve is specifically designed for use in BMW models such as the 525i, 528i, 530i, 540i, M5, and Land Rover vehicles including the Range Rover, X5, and Z8. Its aluminum construction offers durability and resistance to corrosion, which is critical for maintaining system integrity over time. The valve’s block-type design allows for precise control of refrigerant flow, optimizing the air conditioning system’s efficiency and performance. The inclusion of four O-rings ensures a tight seal at all connection points, reducing the risk of refrigerant leaks. Thread diameters for liquid and suction fittings are engineered to match OEM specifications, facilitating a proper fit and reliable operation.

Applications and Common Issues Addressed

• Regulates refrigerant flow in R134a A/C systems
• Prevents inconsistent cooling performance in BMW 5 Series and M5 models
• Addresses refrigerant leakage due to worn or damaged expansion valves
• Improves air conditioning efficiency in Land Rover Range Rover and X5 vehicles
• Helps resolve fluctuating cabin temperatures caused by faulty expansion valves

Installation Notes and Tips

• Ensure compatibility with vehicle make and model before installation
• Use proper tools to avoid damaging fittings and O-rings during installation
• Replace all O-rings included with the valve to maintain a secure seal
• System evacuation and recharge by a certified technician is recommended after installation
• Mounting hardware is not included; reuse existing hardware or source separately

Quality Assurance and Warranty

Nissens manufactures the 999224 A/C Expansion Valve to meet strict quality standards for automotive HVAC components. The aluminum material and precise engineering contribute to long service life and reliable performance. While specific warranty details are not provided, Nissens products typically adhere to industry standards for durability and function. For warranty information, consult the product documentation or authorized distributors.