Four Seasons 39154 A/C Expansion Valve

Four Seasons 39154 Expansion Valve Overview

Four Seasons 39154 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 Chevrolet, GMC, and Isuzu applications.

Use this Four Seasons Expansion Valve line component when servicing the air conditioning flow control on vehicles such as the Chevrolet Colorado, GMC Canyon, and related Isuzu models. The 39154 expansion valve is specified for 1.5 ton systems with a 3.0 super heat setting and a w/o solenoid design.

Key Features

• Part number: 39154
• Four Seasons Expansion Valve product line
• Block-type A/C expansion valve
• Aluminum construction and aluminum finish
• R134A refrigerant type
• Meets or exceeds OEM specifications
• Style: w/o solenoid
• Mounting hole quantity: 2
• Liquid inlet and outlet use sealing washer connections
• Suction inlet and outlet use sealing washer connections
• Super heat: 3.000
• Tonnage: 1.500

Detailed Description

The Four Seasons 39154 expansion valve regulates refrigerant flow into the evaporator to help maintain proper A/C performance in R134A systems. Its block-type design, aluminum body, and sealing-washer fittings support service on 2004-2012 Chevrolet Colorado and GMC Canyon models, plus 2003-2006 Chevrolet SSR and select 2006-2008 Isuzu applications. This part number 39154 is a direct-fit style replacement for vehicles that use the listed inlet and outlet sizes and OEM-style mounting layout.

This part cross-references UAC EX9707C for the same application.

What It Helps Fix

• Weak or inconsistent cabin cooling
• Incorrect refrigerant metering at the evaporator
• A/C performance loss caused by a worn expansion valve
• Temperature swings during compressor cycling
• Service issues on Chevrolet Colorado and GMC Canyon A/C systems

Installation Notes and Tips

• Verify refrigerant type before installation; this valve is for R134A systems.
• Confirm the block-type layout, 2 mounting holes, and sealing-washer connections match the original part.
• Inspect the mating surfaces and replace worn seals during A/C service.
• Recover refrigerant and evacuate the system before opening the circuit.
• Check system charge and operation after installation to confirm proper super heat and cooling performance.

Quality Assurance

Four Seasons lists this expansion valve as meeting or exceeding OEM requirements, making it a service-ready replacement for the specified applications.