The Mercedes Vito W639 OM646 Diesel Injector Nozzle is an original injector nozzle designed for OM646 diesel engines used in the Mercedes Vito W639. This part comes from a dismantled vehicle, allowing for an economical yet technically sound repair of your car's fuel supply system.
Specifications and technical data
- SKU: A6460700300
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A6460700300
- Substitutable numbers: A6460700300, A 646 070 03 00, 200611, A6MVLGL, A6MVLGLAYC, 0986435, 0986435356, KD
- Fuel type: Diesel
- Category: Fuel Injectors
Purpose and Technical Characteristics
The presented diesel injector for Mercedes Vito W639 is a component of the OM646 engine's injection system, responsible for precise high-pressure fuel delivery. The use of a dedicated injector nozzle ensures:
- stable engine operation across the full load range,
- proper diesel fuel atomization in the combustion chamber,
- maintenance of factory performance parameters and engine running smoothness.
The injection system in diesel engines is particularly sensitive to component quality, which is why using an original injector nozzle is crucial for the durability and reliability of the entire system.
Benefits of Using an Original Injector Nozzle
Choosing a used, original injector for the Mercedes Vito W639 allows you to combine reasonable service costs with maintaining manufacturer-specified parameters. The key advantages include:
- exact fit for the OM646 engine – no need for installation modifications or adapter adjustments,
- preservation of correct injection characteristics (timing, quantity, pressure) consistent with factory specifications,
- reduced risk of starting problems and rough idling,
- potential reduction in fuel consumption due to proper atomization and mixture combustion.
By using a part from the Injector Nozzles category, designed for a specific model and fuel type, you minimize the risk of incorrect fuel system operation and accelerated wear of other components.
Application in the Diesel Injection System
In a diesel engine, the injector plays a key role in the fuel-air mixture formation process. For OM646 units in the Mercedes Vito W639, a correctly selected injector nozzle influences:
- even load distribution across individual cylinders,
- reduction of smoke and excessive exhaust emissions,
- decreased risk of knocking combustion and localized overheating,
- smooth acceleration without jerking or power loss.
The proper selection of a component for the diesel injection system directly impacts driving comfort, safety, and long-term vehicle operating costs.
Condition, Verification, and Part Selection
The offered injector nozzle is a used part, sourced from a dismantled vehicle, allowing for a budget-friendly repair while maintaining original specifications. Before installation, it is recommended to:
- verify compatibility with the OEM part number and interchangeable numbers in the technical specification,
- diagnose other components of the injection system (pump, lines, fuel filter),
- install at a specialized service center with access to appropriate tools and adaptation procedures.
To better understand the symptoms of worn injection system components and the consequences of neglecting them, it is worth reading the article Diesel Injector Failures – How to Recognize Them and What Neglecting Them Entails, which discusses typical symptoms, diagnostic methods, and the consequences of continuing to drive with a damaged injector.
Other Mercedes Injector Nozzles
If you are looking for other Mercedes injector nozzles for different models or engine configurations, check the available items in the Mercedes Injector Nozzles category, where you will find a wide selection of injection system components for this brand's vehicles.
