Cable Connector Mercedes W204 W210 W212 W639 Plug Wiring Loom Cap A2105450403

The Mercedes W204 W210 W212 W639 Wiring Harness Plug is an original electrical installation component designed for use in selected Mercedes models. This specialized wire connector allows for a secure, stable, and serviceable connection of harness sections, facilitating repairs and modifications to the factory wiring. Thanks to its design compliant with manufacturer standards, you maintain installation consistency and minimize the risk of vehicle electrical problems.

Specifications and technical data

• SKU: A2105450403
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2105450403
• Substitutable numbers: A2105450403, A 210 545 04 03, KD
• Category: Wiring Harnesses, Cables & Connectors

Application and Function in the Electrical System

The presented wire connector belongs to the Cables, Harnesses, and Connectors group, responsible for the safe routing and connection of electrical circuits in a car. The plug serves as a disconnect point in the harness – it allows for the disassembly or replacement of an installation fragment without cutting wires, which is particularly important for professional repairs and diagnostics.

Thanks to the factory geometry of the socket and guides, the connector ensures a repeatable, stable connection, limiting the risk of contact looseness, overheating of contacts, or circuit interruption during vehicle operation.

Compatibility with Mercedes Models

The plug has been designed to work with the electrical system in selected Mercedes models of the W204, W210, W212, and W639 classes. This means that the housing shape, pin layout, and locking mechanism are adapted to the factory harnesses used in these vehicle generations, which facilitates installation and allows for the preservation of the original wiring architecture.

It is always advisable to verify the correct connector for a specific body version and equipment based on vehicle data and the part number in the technical specification to ensure full compatibility with the existing harness.

Construction Characteristics and Installation

The connector housing is made of plastic suitable for operation in the engine bay or inside the body, where variable temperatures and vibrations occur. The latches and guides used facilitate the correct insertion of the plug into its corresponding socket, and the appropriately shaped housing helps maintain the correct harness routing.

The component is intended for service installation – after correctly crimping or inserting the wires into the appropriate contacts, it is possible to recreate the factory circuit path without using makeshift connections. This solution is particularly beneficial for repairs after collisions, electrical system interventions, or harness section replacements.

Condition, Origin, and Benefits of Use

The offered connector comes from the Mercedes parts group and is a used component, allowing for economical repair while maintaining original geometry and manufacturing standards. Choosing a factory component from this group reduces the risk of fitting problems and also facilitates future electrical system diagnostics using the manufacturer's service documentation.

Using an original harness connector helps to:

• maintain the consistency of the electrical installation with the vehicle's technical documentation,
• reduce the number of non-factory soldered or screwed connections,
• facilitate future service work thanks to the ability to quickly disconnect the harness at a selected point.

Installation Expansion – Related Components

If you are planning a comprehensive repair or modernization of the electrical installation area in your Mercedes and need other components from the same group, such as additional connectors, harness sections, or adapters, check the available parts in the Mercedes Cables, Harnesses, and Connectors category.

For drivers interested in a broader approach to servicing electrical and charging systems, advisory materials may also be useful – practical tips on diagnostics and part selection can be found in the article When is it Worth Replacing an Alternator with a Used One: A Practical Guide for Drivers.