Mercedes Benz W203 W211 OM646 Fuel Injector is an original component of the diesel engine fuel system, designed for installation in OM646 units in Mercedes C-Class W203 and E-Class W211 models. The used injector nozzle ensures a factory fit, maintaining operating parameters consistent with the manufacturer's specifications.
Specifications and technical data
- SKU: A6460700787
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A6460700787
- Substitutable numbers: A6460700787, A 646 070 07 87
- Location on the vehicle: Front
- Fuel type: Diesel
- Category: Fuel Injectors
Injector Technical Characteristics
The presented fuel injector for OM646 diesel engines operates at the front of the engine unit, responsible for precise diesel fuel dosing into the combustion chamber. The injector nozzle design was developed by the manufacturer for stable operation across a wide range of loads, which translates to:
- controlled fuel atomization across the entire RPM range,
- maintaining smooth engine operation at idle and under load,
- optimizing the combustion process in terms of fuel consumption and exhaust emissions.
As a component from the Injector Nozzles category, this part works with the original Mercedes fuel system, maintaining compatibility with the pressure parameters and control characteristics intended for the OM646 unit.
Purpose and Application in Mercedes Vehicles
The fuel injector for Mercedes W203 and W211 has been specifically designed for OM646 diesel engines, which guarantees proper fit with the cylinder head, fuel rail, and accessories. Its placement at the front of the vehicle facilitates service access and allows for efficient replacement in workshop conditions.
Choosing an original injector nozzle is crucial for:
- maintaining the diesel engine's running refinement to the standard set by the manufacturer,
- preserving power and torque according to factory specifications,
- reducing smoke and vibrations resulting from incorrect fuel dosing.
Condition, Verification, and Benefits of Installing a Used Injector
The offered component is a used part from a dismantled vehicle and is sold as a used injector nozzle. This type of part, with proper diagnostics and installation, allows for economical repair of the injection system without the need to invest in a new set. Choosing an original injector from the secondary market offers:
- factory fit for the OM646 engine without installation modifications,
- maintaining compatibility with the engine control unit software,
- the possibility of replacing a single injector instead of a complete set.
Before installation, the standard workshop procedure is recommended: checking operating parameters on a test bench, replacing seals, and adapting the injector in the control unit if required by the specific system.
Diesel Injection System Diagnostics and Prevention
Symptoms of wear or malfunction in diesel engine injectors – such as rough idling, power loss, increased smoke, or starting difficulties – often indicate the need to replace one or more nozzles. To better understand the symptoms and risks associated with neglecting the injection system, it is worth reading the guide: Diesel Injector Failures – How to Recognize Them and What Are the Consequences of Neglect.
When selecting the appropriate injector for a specific engine version and vehicle year, it is helpful to use the OEM number and interchangeable part numbers. The detailed verification process is described in the article: Guide: How to Select the Correct Car Part by VIN and OEM Number, which explains step-by-step how to safely purchase used fuel system components.
Related Mercedes Injector Nozzles
If you are looking for other Mercedes injector nozzles for diesel engines in your vehicles, check out the full offer in the Mercedes Injector Nozzles category, where you will find a wide selection of components for various models and generations.
