Mercedes W251 Instrument Cluster Speedometer Speedo OM642 Diesel A1715401747

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W251 Instrument Cluster Speedometer Speedo OM642 Diesel is an original instrument cluster component responsible for the precise display of speed, mileage, and key operational information. Thanks to its factory design for OM642 Diesel units, it ensures proper compatibility with the vehicle's electronics and provides comfortable, clear operation for the driver.

Specifications and technical data

• SKU: RHD-A2519006100
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2519006100
• Substitutable numbers: A2519006100, A 251 900 61 00
• Fuel type: Diesel
• Category: Switches & Controls

Purpose and function in the vehicle

This instrument cluster is designed specifically for the Mercedes W251 model with a diesel engine, where it serves as the central information panel in the cabin. It integrates the speedometer, auxiliary gauges, and warning lights into a single module, communicating with the vehicle's control network. This provides the driver with consistent, clear data on the engine's performance, safety systems, and comfort features.

This item belongs to the Switches, control elements and ignition locks group, meaning it is part of a wider control and signaling system in the vehicle. A correctly selected instrument cluster is important not only for convenience but also for diagnostics and the safe operation of the car.

Compatibility with the OM642 Diesel engine

The presented speedometer is designed to work with a Diesel engine unit, which is crucial for the correct representation of engine performance parameters and communication with control modules. Proper mapping of signals from sensors and controllers allows for:

• accurate speed and mileage readings,
• consistent operation of warning lights related to the powertrain,
• seamless integration with the existing electrical installation.

As a result, replacing a faulty instrument cluster with this model allows you to maintain the factory logic of system operation and avoid communication issues within the vehicle's network.

Characteristics, condition, and advantages of use

The offered item is an original Mercedes component, which translates into structural compatibility with the dashboard, wiring harness, and other control modules. As a used part, it retains the factory geometry of mounts and connectors, which facilitates installation in place of the previous instrument cluster without the need for modifications.

The main benefits of using this speedometer in a Mercedes W251 include:

• factory fitment for the specific vehicle generation,
• preservation of the original interior aesthetics,
• the ability to restore full functionality of the instrument panel after a failure of the previous module.

Professional selection and expansion of the control system

When replacing the instrument cluster, it is worth paying attention to compatibility with other control elements in the vehicle, such as comfort modules, the ignition switch, or other components from the Switches, control elements and ignition locks group. If you are planning a comprehensive repair or upgrade of the control and signaling area in your Mercedes and need other items from the same group, such as switches, control modules, or ignition components, check out the available parts in the Mercedes Switches, control elements and ignition locks category.

Safety and selection of used components

In the case of electronic and control elements, such as the instrument cluster, it is crucial to have an informed approach to purchasing used parts – both in terms of quality and operational safety. To better understand what to look for when choosing used components, including those related to driving safety, it is worth reading the guide: Second-hand braking system: how to safely choose discs, calipers, and ABS?.

If you are considering whether a new or used part is a better solution for your case, comparing costs and operational parameters presented in the article New or used? A comparison of costs and quality of car parts, which discusses the practical differences between new and used OEM components, may be helpful.