Mercedes-Benz E-Class W210 Electrical Fuse Relay Box Storage Trim A2105400350

The Mercedes-Benz E-Class W210 Fuse and Relay Box – Storage Compartment Housing is an original electrical system component designed for installation in the rear left section of the body. It ensures organized, safe circuit routing and stable mounting of relays and fuses, contributing to the reliable operation of electrical systems in your E-Class W210. This solution is dedicated to users who expect factory fitment and proper integration with the vehicle's wiring harness.

Specifications and technical data

• SKU: rhd-A2105400350
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2105400350
• Substitutable numbers: A2105400350, A 210 540 03 50, KZ
• Location on the vehicle: Rear, Left
• Category: Fuses & Fuse Boxes

Purpose and Function in the Electrical System

The described fuse and relay box serves as a central power distribution point in the rear of the car. Its placement in the rear – left side of the vehicle allows for shorter wire runs, reduced voltage drops, and easier service access to circuit protection.

This component is responsible for:

• organizing and protecting electrical circuits in the rear of the body,
• securely mounting fuses and relays in dedicated sockets,
• minimizing the risk of mechanical and thermal damage to wires,
• maintaining a clear system structure, facilitating diagnostics.

Construction and Fitment for Mercedes-Benz E-Class W210

The box has been specifically designed for the Mercedes-Benz E-Class W210 model, ensuring factory mounting geometry and compatibility with the original electrical harness. The design features appropriately spaced fuse and relay sockets, enabling logical circuit routing and reducing the risk of errors during servicing.

Precise fitment to the vehicle's body and electrical system means:

• easy installation in the designated location at the rear left,
• no need for modifications to the wiring harness or brackets,
• preservation of the original wire routing and mounting points.

Condition, Origin, and Benefits of Using a Used Part

The offered component is from the group of original Mercedes components and is classified as a used part. This type of solution allows for consistency with the vehicle's factory specifications while reducing costs compared to new components. A used fuse and relay box is a good choice when the existing element has suffered mechanical damage, overheating, or contact corrosion.

Using an original, used fuse box allows you to:

• maintain compliance with the factory standard of the electrical system,
• minimize the risk of problems with aftermarket part fitment,
• restore proper organization and protection of circuits in the rear of the vehicle.

Why Choose This Fuse and Relay Box

For the W210 model, a properly functioning fuse and relay box directly impacts the reliability of many systems – from lighting to selected comfort systems. Replacing a worn or damaged component with an original part from the same production series helps reduce issues with power interruptions, contact overheating, or unstable operation of electrical consumers.

This solution is particularly recommended for:

• repairs after damage to the electrical system in the rear of the body,
• diagnosing faults related to lack of power to selected circuits,
• comprehensive electrical system restoration in older E-Class W210 models.

If you are planning a comprehensive repair or upgrade of the electrical system area in your Mercedes and need other elements from the same group, such as fuse box housings, mounting brackets, or additional distribution modules, check the available parts in the Mercedes Fuses and Fuse Boxes category.

For drivers interested in a broader perspective on the evolution of technical solutions within the brand, it is worth reading an article describing the design changes and approach to designing electrical systems and components across subsequent generations – details can be found in the material about the evolution of the Mercedes S-Class and the selection of Mercedes parts over the years.