Mercedes Vito Viano W639 Diesel OM646 Fuel Injector Common Rail A6470700087

Mercedes W639 OM646 Injector Injector A6470700087 is an original injector nozzle designed for OM646 diesel engines in Mercedes Vito/Viano W639 models. This component comes from the Diesel fuel system and is a precise part responsible for proper fuel delivery into the combustion chamber.

Specifications and technical data

• SKU: A6470700087
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6470700087
• Substitutable numbers: A6470700087, A 647 070 00 87, KD
• Fuel type: Diesel
• Category: Fuel Injectors

Application and Technical Characteristics

The presented injector for OM646 engine operates in a high-pressure Diesel system, ensuring a properly atomized fuel stream and stable engine operation. A correctly selected injector nozzle is crucial for:

• maintaining smooth engine operation across the entire RPM range,
• reducing smoke emissions and improving the refinement of the diesel engine,
• optimizing fuel consumption in daily use,
• preserving correct exhaust emission parameters in the OM646 engine.

The injector nozzle from this series is designed for precise diesel fuel atomization, which translates to stable mixture combustion and proper response to load.

Benefits of Using an Original Mercedes Injector Nozzle

Selecting the correct injector for a Diesel engine directly impacts the engine's durability. Using an original Mercedes injector nozzle allows for:

• factory fitment to the fuel system in the OM646 engine,
• stable operating parameters under load, especially when driving with a load or on long journeys,
• better control over the combustion process, which helps protect components such as pistons, valves, and the particulate filter (if present in the specific vehicle configuration),
• easier diagnostics and servicing compared to aftermarket alternatives with unclear specifications.

For Mercedes diesel engines, the correct selection of injector nozzles is particularly important as it affects the refinement, dynamics, and long-term reliability of the entire powertrain.

Component Condition and Installation Recommendations

The offered injector is a used part, allowing for economical repair of the injection system while maintaining the original manufacturer's specifications. Before installation, it is recommended to:

• thoroughly check the fuel system for leaks and return lines,
• use new sealing washers under the injector seat,
• perform adaptation or coding in the engine control unit, if required for the specific vehicle configuration,
• inspect the remaining injector nozzles for uniform operation of the entire set.

Professional installation and verification of operating parameters on a diagnostic bench will allow for the full utilization of this component's potential in the Diesel engine.

Diesel Injection System Diagnostics and Prevention

When replacing a single injector nozzle, it is worth paying attention to symptoms typical of wear in injection system components, such as rough idling, loss of power, or increased fuel consumption. Detailed information on this topic can be found in the guide Diesel Injector Failures – How to Recognize Them and What Their Neglect Threatens, which discusses the symptoms, consequences, and diagnostic methods for damaged injectors.

Other Mercedes Injector Nozzles

If you also need other Mercedes injector nozzles for complete fuel system servicing in your vehicle, check out our dedicated category: Mercedes injector nozzles. This will allow you to easily select other injection system components that meet the requirements of your diesel engine.