Mercedes W639 W906 OM646 Injector A6460701487 is an original injector nozzle designed for OM646 diesel engines, used in popular Mercedes W639 and W906 van models. This component belongs to the Injector Nozzles group, ensuring proper fitment for the diesel fuel system and stable engine performance parameters.
Specifications and technical data
- SKU: A6460701487
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A6460701487
- Substitutable numbers: A6460701487, A 646 070 14 87, A6460701187, A 646 070 11 87
- Fuel type: Diesel
- Category: Fuel Injectors
Purpose and Technical Characteristics
The presented injector is a part of the Diesel engine fuel system, specifically designed for OM646 units installed in Mercedes W639 and W906 vehicles. As a part of the Injector Nozzles category, it is responsible for precise high-pressure fuel delivery, directly impacting engine smoothness, dynamics, and fuel consumption.
Original Mercedes-Benz OE origin guarantees adherence to factory spray pattern parameters, correct injection angle and timing, and compatibility with the factory engine control unit. The injector works with the common rail system, ensuring stable pressure and repeatable fuel doses across the entire load range.
Benefits of Using an Original Injector Nozzle
Using an original injector nozzle in an OM646 engine helps maintain correct engine operating parameters and reduces the risk of costly failures. Key advantages include:
- Improved Engine Stability – uniform fuel delivery minimizes vibrations and rough idling.
- Optimized Combustion – proper fuel atomization promotes more complete mixture combustion, potentially leading to lower fuel consumption.
- Protection of Related Components – a correctly functioning injector reduces the load on the turbocharger, diesel particulate filter, and exhaust system.
- Engine Electronics Compatibility – maintaining factory characteristics facilitates ECU adaptation and reduces the risk of diagnostic errors.
Condition, Origin, and Practical Application
The injector is offered as a used original part, providing a sensible balance between purchase cost and maintaining factory performance parameters. This type of part is particularly attractive for maintenance repairs on commercial vehicles where both reliability and service economy are crucial.
In practice, installing an original injector nozzle in a Mercedes W639 or W906 with an OM646 engine allows for:
- restoring proper injector system operation after the failure of one of the injectors,
- reducing smoke and power loss resulting from improper fuel atomization,
- maintaining predictable vehicle behavior under load, which is important for delivery and fleet applications.
Diagnostics and Diesel Injector Selection
Before replacing an injector nozzle, it is advisable to conduct thorough fuel system diagnostics, including a return flow test, reading injector corrections, and checking common rail pressure. Correctly selecting the part for a specific OM646 engine version is crucial to avoid problems with starting, smoking, or uneven engine operation.
If you want to better understand the symptoms of wear and diagnostic principles, the article: Diesel Injector Failures – How to Recognize Them and What Neglecting Them Entails will be helpful, providing practical tips on assessing injector condition and the consequences of neglecting them.
Other Mercedes Injector Nozzles
If you are also looking for other Mercedes injector nozzles for different models or diesel engine configurations, check out our dedicated category: Mercedes injector nozzles, where you will find a wide selection of original fuel system components.
