Four Seasons 38814 A/C Expansion Valve

Four Seasons 38814 Expansion Valve Overview

The Four Seasons 38814 expansion valve is a block-type A/C flow restrictor built for R134A systems and engineered to meet or exceed OEM requirements. It is a direct-fit HVAC service part for Mercedes-Benz applications, including CLK320, E320, C280, and related models.

Four Seasons Expansion Valve line parts are built for precise refrigerant control in automotive air conditioning systems. This aluminum valve uses female FIO insert O-ring connections and a w/o solenoid design for service on select Mercedes-Benz HVAC setups.

Key Features

• Part number: 38814
• Brand: Four Seasons Expansion Valve
• Block-type A/C expansion valve
• Aluminum construction and aluminum finish
• R134A refrigerant type
• Female suction and liquid inlet/outlet fittings with insert O-ring style
• Super heat rating: 7.000
• 2.000 tonnage application
• Meets or exceeds OEM specifications
• Style: w/o solenoid

Product Details

The Four Seasons 38814 expansion valve regulates refrigerant flow into the evaporator to support proper A/C system operation. Its block-type design, aluminum body, and OEM-style FIO insert O-ring ports are suited for Mercedes-Benz HVAC systems that use R134A refrigerant. This part cross-references Bosch 17305 and UAC EX10068C for the same application.

Compatible fitment includes 1994-2000 Mercedes-Benz C280, 1996-2002 Mercedes-Benz E320, 1998-2002 Mercedes-Benz CLK320, and other listed Mercedes-Benz models. If you are servicing a Mercedes-Benz CLK430, E430, or C43 AMG A/C system, Four Seasons 38814 provides the correct expansion valve format for those applications.

What It Helps Address

• Inconsistent cabin cooling caused by restricted refrigerant metering
• A/C performance loss from a worn or sticking expansion valve
• Improper evaporator feed in R134A systems
• Temperature fluctuation during compressor cycling
• Service replacement for Mercedes-Benz HVAC flow control components

Installation Notes and Tips

Verify the suction and liquid port sizes, fitting style, and refrigerant type before installation. This valve uses female FIO insert O-ring connections and is listed without a solenoid, so confirm the original system configuration on the vehicle before replacement. For best results, inspect the O-ring sealing surfaces and replace any damaged seals during A/C service.

Body fitment examples include Fits 1998-2002 Mercedes-Benz CLK320, N/A; Fits 1996-2002 Mercedes-Benz E320, N/A; Fits 1994-2000 Mercedes-Benz C280, N/A; and Fits 1998-2000 Mercedes-Benz C43 AMG, N/A.

Quality Assurance

Four Seasons 38814 is listed as meeting or exceeding OEM requirements for the specified applications. It is built as an OE-style replacement expansion valve for select Mercedes-Benz A/C systems.