Nissens 999396 A/C Expansion Valve

Nissens 999396 A/C Expansion Valve

The Nissens 999396 A/C expansion valve is a direct-fit HVAC flow restrictor for the air conditioning system on select Saab 9-3 models. Built from aluminum and configured for R134A refrigerant, it helps regulate refrigerant flow across the evaporator for stable cooling performance.

Compatible with 1999-2003 Saab 9-3 applications, this Nissens expansion valve is identified by part number 999396 and is built to match the service requirements of the original system layout.

Key Features

• Aluminum construction for HVAC service durability
• Designed for R134A refrigerant systems
• Block-style A/C expansion valve design
• Includes O-rings for sealing at the connection points
• Direct replacement for select Saab 9-3 A/C service applications
• Cross-references Monroe Shocks & Struts (e.g., 4230785, 4758686) for the same application

Product Details

Nissens develops thermal management components with a focus on aftermarket fit and function, and the 999396 expansion valve follows that approach for Saab 9-3 climate control service. The valve meters refrigerant entering the evaporator, which is critical for maintaining proper cabin cooling, system balance, and compressor protection. If your Saab 9-3 has inconsistent vent temperatures, poor refrigerant metering, or service-related A/C performance issues, this component addresses the flow control point in the system.

Fits 1999-2003 Saab 9-3, N/A.

Common Issues This Part May Resolve

• Uneven or weak cabin cooling
• Incorrect refrigerant flow through the evaporator circuit
• A/C performance loss after system service
• Temperature fluctuation at the vents
• Restriction-related HVAC cooling complaints

Installation Notes

Verify refrigerant type before installation; this valve is specified for R134A systems. Inspect the mating surfaces and replace worn seals as needed, using the included O-rings to help maintain a proper seal. Confirm the liquid and suction fitting thread diameters match the vehicle’s HVAC connections before assembly.

Quality Assurance

Nissens manufactures thermal and engine efficiency components to consistent quality standards, and this part is produced under the brand’s Genuine Nissens Quality approach. Part number 999396 is built for the specified Saab 9-3 fitment and HVAC application.