Mercedes W639 OM646 Injector A6460700487 is a precision injector nozzle designed for OM646 diesel engines in Mercedes Vito/Viano W639 models. This component is responsible for accurate diesel fuel dosing, which is crucial for the unit's smooth operation, performance, and stable fuel consumption.
Specifications and technical data
- SKU: A6460700487-1
- 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
Injector Technical Characteristics
The offered injector nozzle belongs to the Injector Nozzles category and is designed for Diesel engines. The injector's construction ensures precise fuel atomization in the combustion chamber, which translates to even operation of all cylinders and reduced engine vibration.
The injector works with a high-pressure injection system, maintaining stable fuel dose parameters across a wide range of loads. This allows the OM646 engine to retain proper dynamics, and the control unit to accurately adjust doses based on driving conditions.
Purpose and Compatibility
This injector is dedicated to OM646 units used in the Mercedes W639, where the injection system is crucial for the engine's durability and efficiency. Using the correct injector nozzle helps maintain:
- stable injection pressure across the entire RPM range,
- proper fuel spray formation in the combustion chamber,
- consistent operating parameters between individual cylinders.
Thanks to compliance with manufacturer designations and the availability of interchangeable part numbers, this component can be used as a suitable replacement in factory systems without the need for fuel system modifications.
Benefits of Using an Original Injector Nozzle
Replacing a worn injector with a functional component directly impacts the vehicle's daily operation. A properly functioning injector nozzle helps in:
- reducing exhaust smoke during acceleration and idling,
- decreasing fuel consumption through precise diesel fuel dosing,
- improving engine smoothness – quieter and more even operation,
- reducing the risk of damage to cooperating components, such as pistons or valves, resulting from improper combustion.
For Mercedes diesel engines, maintaining a functional injection system is one of the key conditions for ensuring proper engine durability and compliance with emission standards.
Condition and Service Application
The offered injector is a used component, allowing for economical repair of the injection system while maintaining parameters close to factory specifications. This type of part is suitable for both routine repairs and comprehensive engine overhauls where multiple injectors need to be replaced simultaneously.
Before installation, it is recommended to perform standard service procedures, such as checking the fuel system for leaks, verifying operating parameters on a diagnostic bench, and adapting the injector in the engine control unit if required by the specific system.
Injection System Diagnostics and Prevention
Malfunctioning injector nozzles can cause a range of symptoms – from uneven idling and power loss to increased fuel consumption and smoke. To better understand the symptoms of wear and methods for verifying injector condition, it is worth reading the article Diesel Injector Faults – How to Recognize Them and What Neglecting Them Entails, which discusses typical symptoms, consequences, and basic diagnostic methods.
Other Mercedes Injector Nozzles
If you are looking for other Mercedes injector nozzles for similar service applications or want to compare available solutions for different models of this brand, check out our Mercedes injector nozzles category, where you will find a wide selection of components for diesel engine injection systems.
