Four Seasons 39629 A/C Expansion Valve - Front

Four Seasons 39629 Expansion Valve

The Four Seasons 39629 expansion valve is a block-type A/C flow restrictor built for R134A systems and front-position applications. It uses an aluminum body with O-ring inlet and outlet connections for the liquid and suction sides, making it a direct-fit service part for select BMW HVAC systems.

For BMW 745i, 745Li, 750i, 750Li, 760i, and 760Li front A/C service, this Four Seasons Expansion Valve line part is specified to meet or exceed OEM requirements. The 39629 expansion valve is engineered for a 1.500 tonnage application with a -2.5 super heat setting and no solenoid.

Key Features

• Four Seasons Expansion Valve line part number 39629
• Block-type A/C expansion valve for R134A refrigerant systems
• Aluminum construction for HVAC service applications
• Female O-ring liquid and suction connections
• 2 mounting holes for front-position installation
• Meets or exceeds OEM specifications
• Designed without solenoid
• Super heat setting: -2.5
• Tonnage: 1.500

Fitment Details

• Fits 2006-2009 BMW 750i, front.
• Fits 2006-2009 BMW 750Li, front.
• Fits 2003-2009 BMW 760Li, front.
• Fits 2004-2006 BMW 760i, front.
• Fits 2002-2005 BMW 745i, front.
• Fits 2002-2005 BMW 745Li, front.

What It Helps Address

• Inconsistent cabin cooling from a restricted refrigerant metering valve
• Incorrect evaporator feed control in the front HVAC circuit
• Pressure and temperature imbalance across the A/C system
• Reduced cooling performance in BMW 745i, 745Li, 750i, 750Li, 760i, and 760Li front systems
• Service replacement for a worn or malfunctioning expansion valve

Installation Notes

Verify refrigerant type, port style, thread sizes, and mounting location before installation. This valve uses female O-ring fittings with No. 6 and No. 8 liquid connections and No. 10 and No. 12 suction connections, so matching the original HVAC layout is important for proper sealing and fit. This part cross-references UAC EX10238C for the same application.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements. The 39629 part number is also referenced under BMW OE numbers and aftermarket interchange numbers for the same front A/C application.