Nissens 999260 A/C Expansion Valve

Nissens A/C Expansion Valve 999260

The Nissens 999260 A/C expansion valve regulates refrigerant flow in the air conditioning system to help maintain proper evaporator performance. Built from aluminum and configured as a block-style valve for R134A systems, it is a direct-fit service part for select Hyundai applications.

Fits 2001-2004 Hyundai Elantra and 2003-2004 Hyundai Tiburon. This part cross-references UAC (e.g., EX10142C, EX529466C) for the same application.

Key Features

• Brand: Nissens
• Part number: 999260
• Part type: A/C expansion valve
• Material: aluminum
• Refrigerant type: R134A
• Block-style design
• O-rings included; O-ring quantity listed as 4
• Liquid and suction fitting thread dimensions listed for system matching

Product Details

The Nissens 999260 expansion valve is part of the HVAC flow restrictor category and is used to meter refrigerant entering the evaporator. Accurate refrigerant control supports stable cabin cooling performance and helps the system maintain the correct pressure balance. For shoppers searching for a Hyundai Elantra A/C expansion valve or Hyundai Tiburon HVAC replacement, this Nissens valve provides a focused service solution for R134A-equipped systems.

Nissens develops thermal and engine-efficiency components for the aftermarket with attention to manufacturing quality and product consistency. The 999260 follows that approach with an aluminum block construction and included O-rings for sealing at the connection points.

What It Helps Address

• Weak or inconsistent cabin cooling
• Incorrect refrigerant metering at the evaporator
• Pressure imbalance in the A/C circuit
• Restricted refrigerant flow caused by a worn valve
• Service replacement for leaking or degraded expansion valve seals

Installation Notes

Verify refrigerant type, fitting dimensions, and system layout before installation. Replace sealing surfaces as needed, and evacuate and recharge the system according to the vehicle service procedure after the repair. Confirm fitment for 2001-2004 Hyundai Elantra and 2003-2004 Hyundai Tiburon before ordering.

Quality Assurance

Nissens positions this part within its Genuine Nissens Quality standard, reflecting the brand’s focus on consistent aftermarket thermal-management components and ongoing product development.