Mercedes W177 W205 W247 Relay Fuse Unit Module 4 Pins Grey SET X2 A0009822923

Mercedes W177 W205 W247 Relay Fuse Unit Module 4 Pins Grey SET X2 are original components from the Relays category, designed for use in the electrical systems of Mercedes vehicles. This set of two grey four-pin relays ensures consistent, predictable operation of systems where stable circuit switching under load is required. It is a practical service solution for users looking for parts structurally matched to specific models.

Specifications and technical data

• SKU: A0009822923-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0009822923
• Substitutable numbers: A0009822923, A 000 982 29 23
• Color: Grey
• Category: Relays

Technical specifications and application

The presented set includes two four-pin relays in grey, designed to operate in the electrical systems of Mercedes W177, W205, and W247 series vehicles. The four-contact design allows for typical applications in control circuits where reliable switching of power to consumers, such as auxiliary modules, comfort systems, or selected optional equipment components, is required.

The grey housing facilitates visual identification of the component in the fuse box or relay panel, which speeds up diagnostics and service replacement. Using an original relay from the same product group allows for maintaining compliance with the vehicle's factory electrical architecture.

Benefits of using original relays

Using relays dedicated to specific Mercedes models translates into a number of practical benefits:

• maintaining operating parameters in accordance with the vehicle manufacturer's specifications,
• consistency with the existing wiring harness and mounting sockets,
• reducing the risk of malfunctions in controlled systems,
• easier diagnostics during future inspections.

Two elements in one set is a convenient solution when servicing multiple circuits simultaneously or for planned preventive replacement when you want to maintain a uniform type of relay in a given module. This makes it possible to organize the installation and facilitate future service work.

Product condition and mounting aspects

The offered relays are in used condition, which makes them an attractive cost-effective alternative while maintaining the functionality required for daily operation. Such components, when working correctly, can be successfully used as replacements in existing systems, especially in vehicles where a reasonable balance between repair cost and maintaining system efficiency is important.

The standard four-pin connector configuration facilitates simple installation – the relay is seated directly in the socket provided by the vehicle manufacturer. The lack of need for wiring modifications or additional adapters speeds up the service process and reduces the risk of installation errors. The grey color of the housing additionally supports clear function marking in the relay box.

Application in service practice

Such relays are often used for:

• diagnosing and eliminating faults related to intermittent power loss in selected circuits,
• replacing consumable elements in relay boxes after years of vehicle use,
• upgrading or retrofitting the car with additional functions requiring stable electrical control.

By using original components from the same product group, you can maintain the consistency of electrical parameters and avoid problems resulting from the use of random replacements with uncertain characteristics.

System expansion and additional information

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 relays, control modules, or safety components, check the available parts in the Mercedes Relays category.

When selecting used electronic and electromechanical components, it is worth following proven principles of selection and technical condition verification – you will find practical tips in the article Second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?, which discusses key aspects of choosing such components in the context of durability and operational safety.