Mercedes W176 W204 C207 W212 C218 W246 Relay 4-Pin Black Hella 12V A0025428319

Mercedes W176 W204 C207 W212 C218 W246 Relay 4-Pin Black Hella 12V is an original component from the Relays group, designed for use in the electrical systems of Mercedes vehicles. Its compact black housing and four-pin connector ensure a secure fit in the socket and stable operating parameters under typical service conditions.

Specifications and technical data

• SKU: A0025428319
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0025428319
• Substitutable numbers: A0025428319, A 002 542 83 19, 4RA007813-08, 4RA 007 813-08
• Color: Black
• Category: Relays

Application and compatibility

The presented relay is designed for Mercedes models from the W176, W204, C207, W212, C218, and W246 series, which utilize Hella electrical components with a four-pin connector and 12V power supply. Thanks to a design that complies with the vehicle manufacturer's factory standards, this component works with original wiring harnesses and mounting sockets without the need for modifications.

This type of solution is used, among others, in control circuits for consumers requiring stable switching at 12V, where parameter repeatability and resistance to typical operational loads are essential.

Construction and technical features

The relay features a black housing with a compact design, which facilitates installation in fuse boxes and distribution modules in the engine compartment or inside the vehicle. The four-pin terminals are arranged in a standard layout used in 12V systems, allowing for direct insertion into the socket without additional adapters.

The internal contact and coil system is designed for automotive electrical systems, taking into account typical voltage fluctuations and temperature conditions. Using a Hella brand component helps maintain consistency with the vehicle's factory electrical architecture.

Benefits of using an original relay

Using a relay that complies with factory solutions helps reduce the risk of compatibility issues and improper operation of electrical circuits. In practice, this translates into:

• stable circuit switching at 12V power supply,
• proper cooperation with existing wiring and control modules,
• maintaining consistency with Mercedes factory standards.

Thanks to its compact design and fit for dedicated sockets, installation is efficient, and the component itself can be treated as a functional replacement for the factory-installed relay in a given model.

Practical installation tips

Before replacing the relay, it is recommended to verify the markings on the existing component and compare the pin configuration with the socket in the vehicle. Proper seating in the relay box and checking the condition of the socket contacts help minimize the risk of voltage drops and local overheating. After installation, it is worth performing a functional test of the circuit involved in the replacement to confirm the system is working correctly.

System expansion and related parts

If you are planning a comprehensive repair or upgrade of the electrical system area in your Mercedes and need other items from the same group, such as additional relays, control modules, or load control elements, check the available parts in the Mercedes Relays category.

To better plan service work and reduce vehicle downtime in the workshop, it is worth reading the guide on the impact of the availability of used OEM parts on the repair process: Availability of car parts off-the-shelf vs. repair time – how do used OEM parts shorten workshop stays?.