Fuel Injector Mercedes W168 Diesel OM668 Common Rail A6680700987

The Mercedes W168 OM668 Common Rail Fuel Injector is an original common rail injector nozzle designed for Mercedes diesel engines from the OM668 family. This component ensures precise diesel fuel metering, contributing to stable engine operation and proper diesel engine performance.

Specifications and technical data

• SKU: A6680700987
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6680700987
• Substitutable numbers: A6680700987, A 668 070 09 87
• Fuel type: Diesel
• Category: Fuel Injectors

Injector Technical Characteristics

The presented injector belongs to the category of injector nozzles and works with a common rail fuel system in a Diesel engine. The injection system design allows for multi-phase high-pressure fuel injection, which supports even mixture combustion and reduces excessive exhaust smoke.

The precise spray tip is responsible for proper fuel atomization in the combustion chamber, and appropriately selected flow parameters help maintain the OM668 unit's correct performance while ensuring reasonable fuel consumption.

Application in OM668 Engine and Benefits of Replacement

The common rail injector dedicated to OM668 units in the W168 body has been designed to maintain the engine's factory operating parameters. Replacing a worn nozzle with a functional component allows for:

• stabilizing idle operation and reducing engine vibrations,
• reducing fuel consumption through proper diesel fuel metering,
• decreasing smoke and incorrect mixture combustion,
• improving acceleration dynamics across the full RPM range.

A correctly selected injector is crucial for the durability of a diesel engine, as improper fuel injection can lead to combustion chamber overheating, excessive piston load, and carbon deposit buildup.

Component Condition and Installation Aspects

The offered injector is used, allowing for an economical repair of the injection system while maintaining the original manufacturer's specifications. Before installation, the standard workshop procedure is recommended, including:

• verification of parameters on a test bench for leaks and flow rate,
• inspection of cylinder head seats and cleaning of mating surfaces if necessary,
• use of new sealing washers in accordance with service recommendations.

Proper installation and coding (if required by the specific control unit) help maintain even operation of all cylinders and reduce the risk of recurring faults.

Injection System Diagnostics and Prevention

In case of starting problems, power loss, or uneven engine operation, a comprehensive common rail system diagnosis is recommended. A detailed discussion of symptoms and consequences of neglect can be found in the article: Diesel Injector Failures – How to Recognize Them and What Their Neglect Entails. This allows for a better assessment of when replacing a single injector nozzle is justified and when a more extensive intervention in the fuel system is necessary.

Other Mercedes Injector Nozzles

If you are looking for other Mercedes injector nozzles for similar applications, check out our dedicated category: Mercedes injector nozzles. There you will find a wide selection of components for various models and generations, making it easier to find the right injector for your specific diesel engine.