Nissens 999981 A/C Expansion Valve

Overview

Nissens A/C expansion valve 999981 is a block-style HVAC flow restrictor built for R134 refrigerant systems. It is a direct-fit service part for the Honda CR-V application listed below and is built to OE-matching standards for pressure performance, tightness, opening behavior, set-point setting, and internal finish.

Key Features

• Aluminum block-style expansion valve for R134 A/C systems
• Built to OE-matching standards for controlled refrigerant flow
• Validated for pressure performance, tightness, and opening characteristics
• Includes O-rings and mounting bolts whenever applicable
• Fits 2017-2019 Honda CR-V, N/A

Detailed Description

This Nissens expansion valve 999981 regulates refrigerant flow through the air conditioning system so the evaporator can operate at the correct pressure and temperature balance. The aluminum block design supports consistent metering in R134-equipped systems, while Nissens testing focuses on sealing integrity, opening point accuracy, and internal finish control. For Honda CR-V service work, this part number 999981 provides a replacement option aligned with OE-style specifications.

Nissens develops thermal expansion valves to strict manufacturing standards and supplies O-rings and mounting bolts whenever applicable. This makes the part suitable for technicians replacing a worn or restricted valve in a Honda CR-V A/C repair where correct refrigerant control is required.

What It Helps Fix

• Inconsistent cabin cooling from improper refrigerant metering
• Restricted A/C flow caused by a worn expansion valve
• Pressure imbalance in the HVAC refrigerant circuit
• Temperature control issues related to valve opening performance
• Sealing problems at the valve connection points

Installation Notes

Verify refrigerant type before installation; this valve is specified for R134 systems. Replace O-rings during service and follow the vehicle service procedure for evacuation, leak checking, and recharge. Confirm the block-style valve orientation and mounting points match the original layout before final assembly.

Quality Assurance

Nissens tests these expansion valves for pressure performance, tightness, opening behavior, set-point accuracy, and internal finish control to OE-matching standards. This part cross-references Global Parts Distributors LLC (e.g., 3411956) for the same application.