Expansion Valve Mercedes W205 W213 W238 A/C Air Conditioning Unit A0998300600

The Mercedes W205 W213 W238 Air Conditioning Expansion Valve is an original part from the Expansion Valves group, designed for the air conditioning system in Mercedes C-Class, E-Class, and E Coupe/Cabrio vehicles. The precise design of the valve ensures stable refrigerant expansion, which translates to uniform cabin cooling and proper operation of the entire system. This is a solution for users expecting factory fitment and predictable performance parameters.

Specifications and technical data

• SKU: A0998300600
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0998300600
• Substitutable numbers: A0998300600, A 099 830 06 00, KD
• Category: A/C Expansion Valves

Purpose and Function in the Air Conditioning System

The Mercedes W205 W213 W238 Air Conditioning Expansion Valve is responsible for controlled reduction of refrigerant pressure before the evaporator. A properly selected valve:

• stabilizes the air supply temperature under various engine load conditions,
• reduces the risk of evaporator freezing during prolonged air conditioning operation,
• supports even distribution of cold air throughout the cabin,
• maintains the system's proper efficiency at high external temperatures.

By maintaining the factory flow characteristics, the valve works with other air conditioning system components without requiring additional modifications.

Benefits of Using an Original Expansion Valve

Using a part from the Expansion Valves group dedicated to specific generations of Mercedes W205, W213, and W238 helps to reduce common problems arising from the use of aftermarket replacements with uncertain characteristics. Key advantages include:

• factory fitment for the air conditioning system of the specific model,
• predictable behavior during pressure and temperature changes,
• reduced risk of flow noise and air supply temperature fluctuations,
• easier system diagnostics due to maintaining OEM parameters.

A valve configured this way facilitates maintaining thermal comfort inside the vehicle and supports long-term, stable operation of the air conditioning compressor.

Product Characteristics and Fitment

The offered part comes from the Mercedes line and is intended for installation in the air conditioning systems of models W205, W213, and W238. The valve's design is engineered for:

• precise metering of refrigerant to the evaporator,
• maintaining appropriate pressure drop across a wide range of loads,
• compatibility with factory sensors and air conditioning controls.

This makes installation straightforward for an experienced mechanic, and after replacement, the air conditioning can be restored to proper operation without interfering with other components.

Condition and Service Application

The part is offered as a used item, allowing for economical repair of the air conditioning system while maintaining original specifications. This type of solution is often chosen for:

• repairs after air conditioning system leaks and failures,
• services performed concurrently with compressor or evaporator replacement,
• restoring the functionality of fleet and private vehicles at controlled costs.

Selecting the valve according to the vehicle manufacturer's designations facilitates identifying compatibility with a specific body and engine version.

Related Categories and Technical Knowledge

If you are planning a comprehensive repair or upgrade of the air conditioning area in your Mercedes and need other parts from the same group, such as additional valves, control elements, or regulating components, check the available parts in the Mercedes Expansion Valves category.

To better understand the relationships between individual components in modern engine and auxiliary systems, it is worth reading the blog article EGR: What It Is and Why Consider Used EGR Valves, which discusses practical aspects of selecting and operating auxiliary system components in modern generation vehicles.