Mercedes-Benz CLC-Class CL203 Insulation Rear Right O/S Wheelhouse A2036821241

The Mercedes CL203 Rear Right Wheel Arch Insulation is an original body part designed to protect the rear right wheel arch in Mercedes vehicles. It provides an effective barrier against moisture, mud, and debris, stabilizing the operating conditions of suspension components and the body structure in this area of the car. Thanks to its factory fit, the insulation helps maintain proper acoustics and driving comfort without requiring body modifications.

Specifications and technical data

• SKU: A2036821241
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2036821241
• Substitutable numbers: A2036821241, A 203 682 12 41, EM
• Location on the vehicle: Rear, Right
• Category: Other Exterior Parts & Accessories

Purpose and Function of the Part

The rear right wheel arch insulation in CL203 series models is responsible for shielding the inner part of the wheel arch from the wheel side, which is particularly exposed to water, road salt, and small stones. A correctly installed part reduces the risk of accelerated sheet metal corrosion, minimizes dirt accumulation in body cavities, and helps maintain stable operating conditions for suspension components.

Its placement on the vehicle in the rear right wheel arch area means the insulation is important for both body protection and interior acoustic comfort – it reduces noise generated by the wheel and the sound of debris hitting the surface.

Construction and Fit for Mercedes CL203

The part is designed as an original component for the CL203 body, ensuring a precise fit to the wheel arch shape and factory mounting points. This makes installation predictable, without the need for modifications or edge adjustments. The insulation's construction is optimized for typical passenger car road conditions – it accounts for temperature changes, humidity, and mechanical loads resulting from wheel movement.

The appropriately shaped inner and outer surfaces allow for proper drainage of water and contaminants, which limits the formation of stagnant mud and moisture in critical body areas. This is a practical solution for users who want to maintain the vehicle's structure in good technical condition for a longer time.

Performance Characteristics and Installation

As a part of the wheel arches and body shields group, the rear right side insulation is intended for installation at factory mounting points in the rear axle area. Proper seating of the insulation:

• limits the ingress of water and dirt into the wheel arch interior,
• reduces the exposure of sheet metal and structural connections to corrosion,
• contributes to reducing road noise and underbody sounds,
• facilitates maintaining cleanliness around the wheel arch and suspension components.

A used part allows for an economical replacement of damaged or missing insulation while maintaining original geometry and body compatibility. This is a practical solution for accident repairs, replacements due to corrosion, or restoring the vehicle to full functionality after extended use.

Part Selection by OEM and Compatibility

The manufacturer's designation and associated replacement numbers enable precise identification of the wheel arch insulation in parts catalogs and service systems. In practice, this means that by selecting a part based on its OEM number or reference numbers, you can verify its compatibility with a specific CL203 body version and rear axle configuration. This is particularly important for remote orders where certainty of fit is crucial without physical part comparison.

For users and workshops specializing in the Mercedes brand, this is a convenient way to reduce the risk of purchasing an incompatible part and to speed up the vehicle repair or restoration process.

Repair Extension and Related Mercedes Parts

If you are planning a comprehensive repair or upgrade of the rear body area of your Mercedes and need other parts from the same group, such as wheel arch liners, inner underbody shields, or additional soundproofing elements, check the available parts in the Other Mercedes category.

Technical Support and Knowledge of Sporty Designs

When analyzing the structural differences between standard and sport versions of cars – including solutions in the chassis, brakes, or shields – a comparative material on RS models can be helpful. To better understand how manufacturers design body and chassis components in high-performance cars, it is worth reading the article Audi RS vs. Other Models – What's Under the Hood and Chassis?, which illustrates the design approach in the performance car segment.