Four Seasons 39241 A/C Expansion Valve

Four Seasons 39241 Expansion Valve Overview

Four Seasons 39241 is a block-type A/C expansion valve for R134A systems. It is built from aluminum and meets or exceeds OEM requirements for direct replacement service on select Buick and Cadillac applications.

This Four Seasons Expansion Valve line is focused on accurate refrigerant metering and OE-style fitment. Part number 39241 is used on 2006-2011 Buick Lucerne and 2006-2011 Cadillac DTS HVAC systems that use a block-style valve configuration.

Key Features

• Brand: Four Seasons Expansion Valve
• Part number: 39241
• Block type A/C expansion valve
• Aluminum construction and aluminum finish
• R134A refrigerant type
• Female suction and liquid fittings with non-threaded connections
• Mounting hole quantity: 2
• Style: w/o solenoid
• Meets or exceeds OEM specifications
• Direct interchange reference: UAC EX10236C

Detailed Description

Four Seasons 39241 is an A/C expansion valve designed to regulate refrigerant flow into the evaporator on compatible HVAC systems. The block-type design uses female inlet and outlet connections with sealing washer and insert O-ring interfaces, along with the specified fitting sizes for the suction and liquid circuits. This makes it a practical OE-style replacement for service work on 2006-2011 Buick Lucerne and 2006-2011 Cadillac DTS models.

The valve is specified for R134A refrigerant systems and is listed as a 1.500 tonnage unit with a -1.500 super heat setting. Four Seasons 39241 also cross-references UAC EX10236C for the same application. If you are replacing a failed expansion valve on a Buick Lucerne or Cadillac DTS, this part number provides a direct-match service option for the listed vehicles.

What It Helps Address

• Warm air from the vents caused by improper refrigerant metering
• Erratic evaporator performance in R134A A/C systems
• Restricted or uneven refrigerant flow through the HVAC circuit
• Loss of cooling performance on a Buick Lucerne or Cadillac DTS
• Service replacement for a leaking or sticking expansion valve

Installation Notes and Tips

Verify the vehicle’s A/C system uses the block-type valve layout and the listed fitting style before installation. Inspect the sealing surfaces, O-rings, and mating lines for wear or contamination, and replace any damaged seals during service. Proper evacuation and recharge procedures are important after expansion valve replacement to restore correct system operation.

Fits 2006-2011 Buick Lucerne, N/A. Fits 2006-2011 Cadillac DTS, N/A. Fits 2006-2008 Cadillac DTS, N/A.

Quality Assurance

Four Seasons 39241 is built to meet or exceed OEM specifications for the listed applications. The part number is supported by multiple interchange references, including Four Seasons 39241 and UAC EX10236C, which helps confirm application matching for service and catalog lookup.