Mercedes Vito W639 Sprinter W906 Diesel OM646 Fuel Injector A6460701487

Mercedes Vito W639 Sprinter W906 OM646 Fuel Injector A6460701487 is an original injector nozzle designed for OM646 diesel engines, used in the popular Mercedes Vito W639 and Sprinter W906 van models. This component comes from the secondary market, allowing for economical fuel system repair while maintaining the original performance characteristics of the engine unit.

Specifications and technical data

• SKU: A6460701487-4
• 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

Injector Purpose and Function

The injector nozzle is responsible for the precise dosing of diesel fuel into the combustion chamber of a diesel engine. In OM646 units used in the Mercedes Vito W639 and Sprinter W906, a properly functioning injector is crucial for:

• stable idle operation and reduced engine vibration,
• maintaining correct power and torque across the entire RPM range,
• controlling fuel consumption and reducing excessive exhaust smoke,
• protecting mechanical components (pistons, valves, turbocharger) from the effects of improper combustion.

Selecting the correct injector for a specific OM646 engine is important both for the durability of the engine unit and for compliance with the original engine control unit maps.

Compatibility with Mercedes Vito W639 and Sprinter W906

The offered component is designed to work with OM646 diesel engines installed in Mercedes commercial vehicles. This provides the user with:

• guaranteed structural fit for the cylinder head and injector seat,
• compatibility with original fuel system components and ECU control,
• retention of factory operating parameters without the need for software modifications.

In practice, this means the ability to restore proper injector system operation in the Mercedes Vito W639 or Sprinter W906 without altering the vehicle's fuel or electrical system.

Technical Characteristics and User Benefits

The fuel injector for the OM646 engine operates in a high-pressure diesel fuel system, where sealing, proper spray pattern, and dose repeatability are key. Using an original injector nozzle allows for:

• predictable engine behavior under load,
• reduced risk of combustion chamber overheating due to improper fuel atomization,
• stable cooperation with the turbocharger and exhaust gas recirculation system,
• decreased risk of mechanical damage caused by detonating fuel mixture.

The component has an assigned OEM part number and corresponding interchangeable numbers, which facilitates verification of compatibility with specific engine configurations and vehicle model years.

Condition, Service Application, and Part Selection

The injector is offered as a used part, which is an advantageous solution for operational repairs in commercial vehicles where cost-effectiveness is important. Such components are often chosen in situations such as:

• diagnosing and eliminating individual faults in the injector system,
• repairing after a single cylinder failure without the need to replace the entire set,
• restoring the operational status of a fleet vehicle within a controlled service budget.

Before installation, the standard workshop procedure is recommended: verification of operating parameters on a test bench, inspection of cylinder head seats, and replacement of necessary seals according to the vehicle manufacturer's recommendations.

Technical Support and Additional Materials

If you need a broader perspective on the diagnostics and common issues with diesel fuel injection systems, it is worth reading the article Diesel Injector Faults – How to Recognize Them and What Neglecting Them Entails, which discusses symptoms, consequences, and methods for checking injectors.

If you are also looking for other Mercedes injector nozzles for various models of this brand, check out our dedicated category: Mercedes Injector Nozzles, where you will find a wide selection of fuel system components for diesel engines.