Nissens 999374 A/C Expansion Valve

Reliable A/C Expansion Valve for Acura and Honda Vehicles

The Nissens A/C Expansion Valve 999374 is engineered to regulate refrigerant flow efficiently in select Acura and Honda models. Designed specifically for vehicles using R134a refrigerant, this aluminum block-type valve ensures consistent air conditioning performance.

Key Features of Nissens A/C Expansion Valve 999374

• Constructed from durable aluminum for corrosion resistance and longevity
• Compatible with R134a refrigerant systems
• Block-type design for precise refrigerant flow control
• Includes four O-rings to ensure a secure, leak-free seal
• Liquid inlet fitting thread diameter: 0.4300 inches
• Liquid outlet fitting thread diameter: 0.6300 inches
• Suction inlet and outlet fitting thread diameter: 0.7100 inches

Detailed Product Description

This Nissens A/C Expansion Valve (part number 999374) is designed to meet the specific HVAC requirements of Acura and Honda vehicles, including the Civic, CR-V, and RDX models. The valve’s aluminum construction offers durability and resistance to corrosion, which is critical for maintaining system integrity over time. Its block-type design allows for accurate regulation of refrigerant flow, optimizing the air conditioning system’s efficiency. The included O-rings provide a reliable seal to prevent refrigerant leaks, contributing to consistent cooling performance.

Common Applications and Issues Addressed

• Regulates refrigerant flow in R134a A/C systems
• Prevents inconsistent cabin cooling due to faulty expansion valves
• Addresses refrigerant leaks caused by worn or damaged seals
• Helps restore proper pressure balance within the HVAC system
• Improves overall air conditioning system reliability in Acura Civic, CR-V, and RDX

Installation Notes and Tips

When installing the Nissens A/C Expansion Valve 999374, ensure all O-rings are properly seated to prevent leaks. This valve is designed for direct replacement in compatible Acura and Honda models; however, verify thread diameters match your vehicle’s specifications before installation. Note that mounting hardware is not included, so retain original fasteners or source appropriate replacements as needed.

Quality Assurance and Warranty

Nissens manufactures this expansion valve to meet OEM standards for fit and function. The use of high-quality aluminum and included O-rings supports long-term durability. While specific warranty details are not provided here, Nissens products typically come with manufacturer-backed quality guarantees to ensure reliable performance in Acura and Honda HVAC systems.