Mercedes W639 OM646 Injector A6460700487 is an original injector nozzle designed for OM646 diesel engines in Mercedes Vito/Viano W639 models. This component from the Injector Nozzles category ensures precise diesel fuel metering, contributing to stable engine operation and proper diesel performance.
Specifications and technical data
- SKU: A6460700487
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A6460700487
- Substitutable numbers: A6460700487, A 646 070 04 87, 0445110264
- Fuel type: Diesel
- Category: Fuel Injectors
Application in OM646 Engine in Mercedes W639
The presented injector is intended for the fuel injection systems of the OM646 engine installed in the Mercedes W639. It is responsible for the accurate fuel atomization in the combustion chamber, which is crucial for:
- maintaining smooth engine operation across the entire RPM range,
- stable engine starting in both cold and warm conditions,
- reducing smoke emissions and unwanted vibrations,
- maintaining proper fuel consumption in urban and extra-urban driving.
A correctly selected injector nozzle for a specific OM646 engine variant allows for the preservation of factory injection system parameters and avoids issues with uneven idling or power loss.
Technical Characteristics of the Diesel Injector
This injector belongs to the group of components designed for diesel-powered engines. Its construction is adapted to the high operating pressures typical of modern diesel injection systems, enabling:
- precise fuel spray formation in the combustion chamber,
- accurate injection metering based on load and engine speed,
- reduction of combustion noise through proper spray pattern,
- maintaining compliance with factory ECU calibration assumptions.
A correctly selected injector for a specific OM646 engine reduces the risk of typical wear symptoms, such as injector knocking, excessive exhaust smoke, or fluctuating idle speeds.
Benefits of Using an Original Mercedes Injector Nozzle
Choosing an original injector from the Injector Nozzles category for the Mercedes W639 OM646 is a solution that helps maintain near-factory operating parameters. The key benefits include:
- compatibility with the injection system used in the OM646 engine,
- proper cooperation with the control electronics and injection maps,
- reduced risk of diagnostic errors related to incorrect part selection,
- possibility of using the existing configuration without the need for installation modifications.
This component is particularly important for vehicles used in urban and commercial conditions, where the engine often operates under variable loads and requires stable, repeatable fuel delivery.
Injector Condition, Selection, and Installation
The offered injector is a used part, allowing for an economical restoration of the injection system's functionality in the Mercedes W639 with an OM646 engine. Before installation, it is recommended to:
- perform thorough diagnostics of the fuel system (rail pressure, injector corrections),
- verify the tightness of the injector seats and the condition of the return lines,
- use new sealing washers in accordance with the manufacturer's recommendations,
- adapt or code the injector in the engine control unit, if required for the specific variant.
Properly performed installation and configuration help reduce the risk of recurring faults and ensure stable engine operation in the long term.
Technical Support and Additional Materials
If you need more in-depth knowledge about the symptoms of wear in fuel injection system components, the article “Diesel Injector Faults – How to Recognize Them and What Neglecting Them Entails” will be a practical supplement, discussing typical symptoms, consequences, and diagnostic methods for diesel injectors.
If you are looking for other Mercedes injector nozzles suitable for different models and engine versions, check out the Mercedes injector nozzles available in our store to select the right part for your vehicle's specific configuration.
