Nissens 999222 A/C Expansion Valve

Nissens A/C Expansion Valve for BMW and Mini

Nissens 999222 is a block-style A/C expansion valve built for BMW and Mini HVAC systems that use R134A refrigerant. It regulates refrigerant flow through the evaporator to help maintain stable cabin cooling performance in the BMW X3, X5, X6, 323i, 328i, 330i, M3, and Mini Cooper applications listed below.

Key Features

• Block-style A/C expansion valve for automotive HVAC service
• Aluminum construction for corrosion resistance and thermal stability
• Configured for R134A refrigerant systems
• Includes mounting hardware and O-rings
• Liquid inlet and outlet thread diameter: 0.5500
• Suction inlet thread diameter: 0.6300
• Suction outlet thread diameter: 0.7100
• Direct replacement option for select BMW and Mini models

Product Details

This Nissens A/C expansion valve, part number 999222, is engineered as a flow restrictor for the air conditioning system. By metering refrigerant into the evaporator, it supports proper pressure control and consistent cooling output. Nissens develops thermal management components with a focus on quality manufacturing, and this valve follows that approach with an aluminum body, included O-rings, and mounting hardware for service replacement.

Compatible With BMW and Mini applications including 1999-2006 BMW 323i, 328i, 325i, 325xi, 330i, 330xi, 323Ci, 328Ci, 325Ci, 330Ci, M3; 2004-2010 BMW X3; 2007-2013 BMW X5; 2008-2014 BMW X6; 2007-2015 Mini Cooper; 2011-2016 Mini Cooper Countryman; and 2013-2016 Mini Cooper Paceman. This part cross-references UAC EX10151C for the same application.

Common HVAC Issues This Part Can Address

• Weak or uneven cabin cooling
• Incorrect refrigerant metering at the evaporator
• Compressor cycling caused by flow restriction problems
• HVAC performance loss after expansion valve wear or contamination
• Service replacement needs on BMW and Mini R134A systems

Installation Notes

Verify refrigerant type, port dimensions, and vehicle application before installation. Replace the O-rings during service, inspect the surrounding lines for contamination or damage, and evacuate and recharge the system to the correct specification after repair. For BMW 323i and 328i sedan applications, confirm the build date notes shown in the fitment data before ordering.

Quality Assurance

Nissens positions this component within its thermal management lineup and manufactures it to the brand’s quality standards for aftermarket HVAC service. Part number 999222 is built for the listed BMW and Mini applications and uses materials and fittings suited to R134A systems.