Four Seasons 38652 A/C Expansion Valve - Front or Rear

Four Seasons 38652 Expansion Valve

Four Seasons 38652 is a brass TXV A/C expansion valve for R134A systems. It regulates refrigerant flow into the evaporator and helps maintain the correct superheat setting for stable cabin cooling in supported Cadillac, Chevrolet, GMC, Buick, and Oldsmobile applications.

Key Features

• Brass construction for HVAC service applications
• TXV design for controlled refrigerant metering
• Configured for R134A refrigerant systems
• 10.5 super heat specification
• Four Seasons Expansion Valve line for direct replacement service

Product Details

The Four Seasons Expansion Valve line is built for A/C flow control in vehicle HVAC systems where precise refrigerant metering is required. Part number 38652 is specified as a brass TXV for R134A use, with a 10.5 super heat setting. In service, this valve helps manage evaporator feed rate so the system can maintain consistent cooling performance. This part cross-references Monroe Shocks & Struts (e.g., 182107) for the same application.

Vehicle coverage includes long-tail fitment searches such as 1963-1972 Cadillac DeVille rear expansion valve, 1969-1972 Chevrolet Blazer front expansion valve, and 1965-1974 Cadillac Fleetwood rear expansion valve. It also applies to Cadillac Eldorado rear, Cadillac Commercial Chassis rear, Buick Skylark, Buick Riviera, Oldsmobile Starfire, Chevrolet C10 Suburban, Chevrolet C20 Suburban, Chevrolet K10 Suburban, Chevrolet K20 Suburban, and GMC Jimmy front applications listed below. The Four Seasons 38652 part number is also searched as 38652 for HVAC repair and replacement.

What It Helps Address

• Incorrect refrigerant metering at the evaporator
• Weak or uneven A/C outlet temperatures
• Expansion valve restriction or sticking
• Superheat control issues in R134A systems
• HVAC service needs on rear or front A/C layouts

Fitment

• Fits 1975 Cadillac Commercial Chassis, rear, w/ Rear evaporator Right angle style valve; Expansion Valve
• Fits 1974-1975 Cadillac DeVille, rear, w/ Valve; Expansion Valve
• Fits 1963-1972 Cadillac DeVille, rear, w/ Valve; Expansion Valve
• Fits 1975 Cadillac Fleetwood, rear, w/ Rear evaporator Right angle style valve; Expansion Valve
• Fits 1965-1974 Cadillac Fleetwood, rear, w/ Valve; Expansion Valve
• Fits 1968-1972 Buick Skylark, N/A, Expansion Valve
• Fits 1969-1972 Chevrolet Blazer, front, Expansion Valve
• Fits 1969-1972 Chevrolet C10 Suburban, front, Expansion Valve
• Fits 1969-1972 Chevrolet C20 Suburban, front, Expansion Valve
• Fits 1969-1972 Chevrolet K10 Suburban, front, Expansion Valve
• Fits 1969-1972 Chevrolet K20 Suburban, front, Expansion Valve
• Fits 1970-1972 GMC Jimmy, front, Expansion Valve
• Fits 1963-1969 Cadillac Eldorado, rear, w/ Valve; Expansion Valve
• Fits 1964-1966 Oldsmobile Starfire, N/A, Expansion Valve
• Fits 1963-1965 Buick Riviera, N/A, w/ Valve; Expansion Valve
• Fits 1963-1964 Cadillac Commercial Chassis, rear, w/ Valve; Expansion Valve
• Fits 1963 Oldsmobile Starfire, N/A, Externally Equalized; Expansion Valve
• Fits 1962 Oldsmobile Starfire, N/A, w/ Factory Air; Externally Equalized; Expansion Valve

Installation Notes

Verify the refrigerant type, valve style, and superheat specification before installation. Match the original A/C layout and mounting orientation, especially on rear evaporator and right-angle valve applications. Clean the system thoroughly and confirm proper evacuation and recharge procedures after replacement.

Quality Assurance

Four Seasons 38652 is a cataloged HVAC replacement part from the Four Seasons Expansion Valve line, with application data tied to specific Cadillac, Chevrolet, GMC, Buick, and Oldsmobile fitments. Confirm the vehicle listing and A/C configuration against the original component before service.