Nissens 999797 A/C Expansion Valve - Front

Overview

This Nissens A/C expansion valve, part number 999797, is a block-style aluminum valve for R134 refrigerant systems. It is built to OE-matching standards and is validated for pressure performance, tightness, opening behavior, set-point accuracy, and internal finish.

Compatible With Honda Pilot, Acura MDX, Honda Odyssey, and Cadillac CTS and SRX applications listed below, this valve supports proper refrigerant metering in the HVAC system. Part number 999797 is a direct-fit service component for vehicles that use a block-type expansion valve design.

Key Features

• Block-style A/C expansion valve for R134 refrigerant systems
• Aluminum construction for HVAC service applications
• OE-matching standards for pressure control and sealing performance
• O-rings included where applicable for the listed application
• Mounting bolts included where applicable for the listed application

Detailed Description

Nissens 999797 is engineered as a thermal expansion valve for automotive air conditioning systems that require precise refrigerant flow control. The block design and aluminum construction support stable operation in service environments, while Nissens testing focuses on pressure performance, tightness, opening characteristics, set-point setting, and internal finish. This part number 999797 is used in fitments including 2003-2008 Honda Pilot, Front; 2001-2006 Acura MDX, Front; 1999-2004 Honda Odyssey, Front; 2003-2007 Cadillac CTS, N/A; and 2004-2006 Cadillac SRX, Front.

This part cross-references UAC EX10081C for the same application.

Common Replacement Reasons

• Weak or inconsistent cabin cooling
• Incorrect refrigerant metering through the HVAC circuit
• Compressor cycling caused by flow control issues
• Temperature fluctuations from a worn expansion valve
• Leak-related service needs at the valve connection points

Installation Notes

Verify refrigerant type, valve style, and system configuration before installation. Replace seals as required for the application and follow proper evacuation and recharge procedures after service. Confirm the listed fitment for your exact vehicle and HVAC layout before ordering.

Quality Assurance

Nissens manufactures this expansion valve to precise OE matching standards and validates pressure performance, tightness, opening behavior, set-point setting, and internal finish during production.