Mercedes CL203 W203 Fuse Box Cover Engine Bay Relay A2035451303

Visual condition of the part 

The product shows signs of use visible in the photos. 

Mercedes CL203 W203 Fuse Box Cover Engine Bay Relay is an original component from the Fuses and fuse boxes group, designed to protect the fuse module in the vehicle's engine bay. Its robust construction and precise fit for the specific body generation ensure stable mounting and proper protection of this critical area of the electrical system.

Specifications and technical data

• SKU: A2035451303
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2035451303
• Substitutable numbers: A2035451303, A 203 545 13 03
• Color: Black
• Category: Disabled Vehicle Parts

Purpose and technical function

The fuse box cover for CL203 and W203 series models is responsible for physically protecting the fuse connector from dust, moisture, and accidental mechanical damage. Thanks to its factory-molded shape and properly designed mounting points, the component works with the original fuse housing, maintaining a stable position for the electrical wiring.

As a part dedicated to the Mercedes brand, the cover maintains the correct geometry relative to adjacent components, which reduces the risk of stress and unwanted play in the electrical system area.

Construction, color, and integration with the system

The cover is made in black, which facilitates visual matching to the factory finish of the engine bay and other electrical equipment components. The neutral color scheme helps maintain a consistent look in the service area while not hindering the identification of wires and connectors during diagnostic work.

The cover design includes:

• a profile matched to the shape of the fuse box,
• space for routing wiring and connectors,
• solutions that facilitate removal during service.

As a result, the component not only protects but also supports the ergonomics of electrical system maintenance during inspections and repairs.

Performance characteristics and condition

The offered cover comes from the pool of used components, which allows for an economical replacement of a damaged or missing cover while maintaining the manufacturer's original specifications. This type of solution is particularly beneficial for vehicles used on a daily basis, where both technical compliance and reasonable repair costs are important.

The element from the Fuses and fuse boxes category is intended for installation in place of the factory cover, without the need for modifying the box structure or interfering with the electrical wiring, which helps preserve the original installation configuration.

Selection by numbers and practical application

The fuse box cover has been designed as a part associated with a specific OEM number, which facilitates precise identification and selection for a given body variant. The product also has interchangeable numbers, allowing it to be used as a replacement within the same construction group while maintaining mounting compatibility.

In practice, replacing a damaged or incomplete cover allows you to:

• limit the exposure of the fuse box to contaminants,
• reduce the risk of electrical contact issues,
• visually organize the electrical system area.

System expansion and additional resources

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 additional housings, brackets, or mounting modules, check the available parts in the Mercedes Fuses and fuse boxes category.

When deciding to use components from the secondary market, it is also worth checking out expert tips on selecting used subassemblies – practical information, identification procedures by numbers, and cost-effectiveness analysis can be found in the article Why it is worth buying used gearboxes and engines – facts instead of myths.