Denso 475-2079 A/C Expansion Valve

Denso New Expansion Valve for BMW and Mini

Denso 475-2079 is a block-style A/C expansion valve that regulates refrigerant flow through the evaporator and helps maintain proper separation between the low and high sides of the air conditioning system. For BMW X3, 325i, 330i, M3, and Mini Cooper applications, correct calibration is important to keep evaporator performance stable and avoid freeze-up or poor heat exchange.

Key Features

• Block valve design for automotive A/C refrigerant control
• Helps regulate liquid refrigerant flow through the evaporator
• Supports proper low-side and high-side system separation
• OE-style replacement from Denso’s New Expansion Valve line
• Part number 475-2079 for direct catalog lookup

Product Details

Denso’s New Expansion Valve line focuses on the metering component that has a direct effect on evaporator performance. When the valve calibration is off, the evaporator can lose heat-transfer efficiency or ice over, which can lead to additional A/C system damage. This Denso 475-2079 expansion valve is built for BMW and Mini vehicles that require a block valve configuration, including 2007-2016 Mini Cooper, 2011-2016 Mini Cooper Countryman, 2013-2016 Mini Cooper Paceman, and select BMW 3 Series, X3, and M3 applications. This part cross-references Four Seasons 39276 for the same application.

What It Helps Address

• Weak or inconsistent cabin cooling
• Evaporator freeze-up from incorrect refrigerant metering
• Poor A/C heat exchange performance
• System imbalance between suction and discharge sides
• Replacement needs on BMW and Mini A/C service jobs

Installation Notes and Tips

Verify the vehicle’s A/C system configuration before installation and confirm the block valve style matches the original part. Replace the expansion valve during A/C service when contamination, restriction, or calibration issues are present. Proper evacuation, leak checking, and refrigerant recharge are required after installation. Confirm fitment by year, make, and model before ordering; this part number 475-2079 is listed for multiple BMW and Mini applications.

Quality Assurance

Denso draws on decades of A/C system engineering for automakers, and its expansion devices are built to meet the calibration demands of modern vehicle HVAC systems. For BMW and Mini owners, that means a replacement valve engineered for the application-specific refrigerant control the system requires.