Mercedes-Benz ML-Class W163 Rear Right O/S Wheel Arch Trim Cover

The Mercedes-Benz W163 Rear Right Fender Liner is an original body part designed to protect the rear right wheel arch in Mercedes vehicles. It provides effective shielding of suspension and body components from dirt, moisture, and minor mechanical damage, contributing to longer and more reliable vehicle operation.

Specifications and technical data

• SKU: A1638840422
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1638840422
• Substitutable numbers: A1638840422, A 163 884 04 22
• Location on the vehicle: Rear, Right
• Category: Rear Light Assemblies

Purpose and Function of the Fender Liner

The rear right fender liner in W163 series models is responsible for separating the wheel well from the body's structural elements. It protects the wheel arch area from water, mud, road salt, and small stones thrown up by the tires. This reduces the risk of accelerated corrosion and mechanical damage in the rear body area.

This component is particularly important for vehicles used in demanding conditions – on unpaved roads, off-road, or when frequently driving in rain and winter. A properly selected and installed fender liner helps maintain stable operating conditions for the suspension and improves the overall durability of the rear axle structure.

Vehicle Fitment and Placement

The fender liner presented is intended for installation in the rear right part of the vehicle, as indicated by the designation Rear, Right. This placement ensures precise fitting to the body geometry of the W163 series, facilitating installation and maintaining the original fender line.

Proper fitment to the specific Mercedes-Benz model minimizes the risk of misalignment, unwanted vibrations, or tire rubbing. In practice, this translates to secure mounting, no additional driving noise, and maintained proper aerodynamics in the rear of the vehicle.

Characteristics of the Used Part

The fender liner is a used part, meaning it is a pre-owned component that retains its intended functionality. This type of component is a good choice for collision repairs, replacing corroded or damaged liners, and restoring a vehicle to a technically sound condition without the need to invest in a new part.

Using an original used part allows for maintaining the proper protective parameters of the wheel arch while preserving a favorable cost-to-effect ratio for the repair. This solution is particularly practical for older W163 series models where both correct function and reasonable service costs are important.

Benefits of Installing the Fender Liner

• Improved protection of the rear body from corrosion and dirt.
• Reduced ingress of water and mud into the wheel arch interior.
• Stable operating conditions for suspension components in the rear zone of the vehicle.
• Restoration of the original fender shape and coverage after body repairs.
• An economical solution while maintaining the original Mercedes-Benz construction.

Related Parts and Vehicle Configuration Development

If you are planning a comprehensive repair or upgrade of the rear lighting area in your Mercedes and need other parts from the same group, such as taillights, light modules, or additional mounting elements, check the available parts in the Mercedes Rear Lights and Brake Lights category.

If you are also considering refreshing your car's interior, you can find inspiration for selecting used interior equipment – such as seats or steering wheels – in the article Car Interior Tuning with Global Parts, which discusses practical modernization possibilities using used parts.