Mercedes-Benz ML E Class W164 W207 OM642 Fuel Injector A6420701187

Mercedes W164 W207 OM642 Injector Nozzle is an original component of the diesel engine fuel system, designed for use in OM642 units. This used Mercedes injector nozzle provides a functional solution for users seeking a technically matched component for professional repair or regeneration of the injection system.

Specifications and technical data

• SKU: A6420701187
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420701187
• Substitutable numbers: A6420701187, A 642 070 11 87
• Category: Fuel Injectors

Technical Characteristics of the Injector

The injector nozzle in the OM642 engine is responsible for precise fuel delivery to the combustion chamber, which directly impacts the unit's running smoothness, dynamics, and exhaust emissions. This component works in conjunction with the high-pressure fuel pump and engine control unit, making it crucial to use a component with parameters that comply with the manufacturer's original specifications.

The offered injector comes from the Mercedes line, ensuring the preservation of the original spray pattern geometry, appropriate opening characteristics, and correct response to control signals. This allows for maintaining stable common rail pressure and repeatable injection timing across the full range of loads.

Application and Compatibility with OM642 Engine

The Mercedes W164 W207 OM642 Injector Nozzle is designed for use in six-cylinder diesel units of the OM642 family, found in various body styles, including SUV and coupe vehicles. Using an original injector nozzle helps maintain:

• correct combustion characteristics across the entire RPM range,
• stable idle operation without excessive vibrations,
• appropriate throttle response during acceleration and under load,
• controlled smoke levels and compliance with factory emission standards.

Selecting an injector from the same product family as the factory-fitted component minimizes the risk of adaptation issues, control unit errors, or uneven cylinder operation.

Condition of the Component and Benefits of Choosing a Used Injector Nozzle

The offered injector nozzle is in used condition, offering a sensible compromise between repair cost and adherence to original manufacturer specifications. This type of component is particularly attractive for:

• budget repairs where cost reduction is a priority while maintaining proper functionality,
• temporary service solutions, e.g., before a planned full regeneration of the entire injection system,
• comparative diagnostics when it's necessary to rule out damage to a specific cylinder or fuel system section.

Choosing a used injector from an offer dedicated to the OM642 reduces the risk of parameter incompatibility, which often occurs when selecting aftermarket replacements of uncertain origin.

Importance of Functional Injector Nozzles for Diesel Engine Operation

A functional injector is crucial for the longevity of the OM642 unit. Improper fuel atomization can lead to:

• accelerated wear of pistons and cylinder liners,
• increased fuel consumption and power loss,
• excessive smoke and issues with the particulate filter,
• engine control unit errors and limp-home mode.

If you want to better understand the symptoms of injector wear and the consequences of neglecting them, it's worth reading the article: Diesel Injector Failures – How to Recognize Them and What Neglecting Them Entails. This provides practical knowledge for planning injection system repairs.

Other Mercedes Injector Nozzles and System Expansion

If you are also looking for other Mercedes injector nozzles for similar service applications or wish to assemble a complete set for your engine, check out the offer in the category: Mercedes injector nozzles. This will allow you to select components from the same product group, facilitating the maintenance of consistent operating parameters for the entire system.

Summary

The Mercedes W164 W207 OM642 Injector Nozzle is an original injector nozzle designed for OM642 diesel engines, suitable for users seeking a technically matched component at a reasonable price. A used component of this caliber helps restore correct fuel delivery, reduces the risk of more serious engine failures, and is a practical solution for injection system repairs in Mercedes vehicles.