Nissens 9991010 A/C Thermal Expansion Valve TXV OE Replacement

The Nissens 9991010 is a direct-fit OE replacement Thermal Expansion Valve (TXV) for automotive air conditioning systems. As one of the major control components of the A/C loop, this precision metering device regulates the amount of refrigerant released into the evaporator, maintaining the correct superheat condition for optimal system performance and cold air output.

Key Features:

• OE-matched performance — designed and validated to precisely match original equipment specifications for a reliable, first-time-right installation
• Includes O-rings and mounting bolts — everything needed for a complete installation is included where applicable
• Thorough welding process — appropriate materials and welding techniques eliminate refrigerant gas leaking from the power (sensing) element
• Outlet pressure and operating pressure tested — each valve is validated for pressure performance, tightness, opening characteristics, and set-point accuracy
• Pre-set adjustment screw — factory-calibrated spring pressure ensures correct superheat control; adjustment is sealed at the factory (VOID sticker applied)
• High-grade internal components — aluminum body with four connections supports all internal elements including the diaphragm, shaft, and ball assembly
• Protects the A/C compressor — maintains proper refrigerant flow to ensure adequate lubrication and prevent slugging, overheating, and premature compressor failure

Nissens recommends replacing the TXV any time an A/C compressor is replaced or whenever the system has experienced severe contamination or compressor seizure. Skipping TXV replacement during compressor service significantly increases the risk of repeat repairs. The Nissens 9991010 expansion valve is developed and tested to Nissens' premium quality standards, making it a dependable aftermarket solution for restoring full A/C system efficiency.