Mercedes W204 W212 W221 Fuel Injector Diesel OM651 is an original injector nozzle designed for diesel engines, used in popular Mercedes C-Class, E-Class, and S-Class models. This component ensures precise diesel fuel metering, which translates to stable engine operation and proper performance for the OM651 engine.
Specifications and technical data
- SKU: A6510702887-1
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A6510702887
- Substitutable numbers: A6510702887, A 651 070 28 87
- Fuel type: Diesel
- Part type: Fuel Injector
- Category: Fuel Injectors
Purpose and Role in the Injection System
The injector nozzle in a diesel engine is responsible for atomizing fuel under high pressure directly into the combustion chamber. In OM651 units, using the correct injector is crucial for:
- maintaining the correct air-fuel mixture across the full range of engine loads,
- stable idle speed without jerking or misfires,
- reducing exhaust smoke and excessive fuel consumption,
- protecting the turbocharger and particulate filter through proper combustion.
Selecting the right injector nozzle for a specific OM651 engine allows for the preservation of the engine's factory performance parameters and reduces the risk of costly component failures.
Technical Characteristics and Compatibility
The presented injector belongs to the Injector Nozzles category and is a component of the fuel supply system for engines powered by Diesel fuel. Its design has been developed for precise fuel metering in modern common rail units, which require:
- multi-phase injections within a single cylinder working cycle,
- stable spray patterns at high operating pressures,
- consistent fuel delivery over a long service life.
Original Mercedes origin signifies compliance with the vehicle manufacturer's factory requirements regarding flow characteristics, spray angle, and resistance to thermal and mechanical loads typical for OM651 engines.
Condition, Application, and Benefits of Installation
The offered component is used, allowing for an economical repair of the injection system while maintaining an OEM-class component. In many cases, installing a functional injector is an effective way to resolve issues such as:
- difficult starting on a warm or cold engine,
- uneven engine operation at idle and under load,
- loss of power and significantly increased fuel consumption,
- excessive smoke during acceleration.
Replacing a worn injector nozzle with a functional component restores correct combustion parameters, contributing to a longer lifespan for the engine, turbocharger, and exhaust system components.
Why Choose a Mercedes Injector Nozzle for OM651
By using an original Mercedes injector in an OM651 engine, you gain:
- guaranteed fitment for the injection system in W204, W212, and W221 models,
- preservation of the engine's factory performance characteristics without the need for ECU software modifications,
- compatibility with other common rail system components, such as the high-pressure pump or fuel rail,
- diagnosability and adaptability using standard service tools used by the Mercedes brand.
This solution is particularly beneficial for users who wish to maintain their vehicle in a configuration close to factory specifications, without experimenting with aftermarket alternatives of uncertain parameters.
Diagnostics and Technical Knowledge
Before replacing an injector, it is advisable to conduct thorough diagnostics of the fuel supply system. Specialized material describing typical symptoms and consequences of damage can be helpful. Detailed information can be found in the article Diesel Injector Failures – How to Recognize Them and What Neglecting Them Entails, which discusses symptoms, possible causes, and methods for verifying injector condition.
Other Mercedes Injector Nozzles
If you are also looking for other Mercedes injector nozzles for different engine versions or models, check out the Mercedes injector nozzles available in our store to select the component that best fits your vehicle's specific configuration.
