Description
Mercedes W164 Diesel Fuel Injector A6420701887 is an original injector nozzle designed for the diesel engines of this generation’s SUV models. This part comes from a dismantled vehicle, allowing for an economical yet technically sound repair of your Mercedes’ fuel system.
Specifications and technical data
- SKU: A6420701887
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A6420701887
- Substitutable numbers: A6420701887, A 642 070 18 87
- Fuel type: Diesel
- Category: Fuel Injectors
Technical Characteristics of the Injector
The presented injector belongs to the Injector Nozzles category and is designed for Diesel engines. It has been engineered for precise high-pressure fuel delivery, which is crucial for stable engine operation, smooth idling, and proper combustion across the entire load range.
A properly selected injector nozzle in the Mercedes W164 influences:
- uniform fuel atomization in the combustion chamber,
- maintaining the engine’s proper power and torque,
- reducing smoke and performance loss during acceleration,
- stable cold starts and a lower risk of misfires.
Purpose and Compatibility
The Fuel Injector for Mercedes W164 has been developed as a component of the fuel system for this series’ diesel engines. By using the OEM part number and interchangeable numbers (visible in the technical specifications), precise verification of compatibility with a specific engine version and vehicle year is possible.
Selecting the correct injector nozzle is particularly important in modern diesel engines, where:
- injection parameters are strictly linked to the engine control unit software,
- an incorrect part can cause diagnostic errors and trigger limp mode,
- design differences between variants can affect sealing and mounting.
Benefits of Using an Original Injector Nozzle
Choosing a used, original injector from a dismantled vehicle for your Mercedes W164 allows you to maintain the original performance parameters of the injection system. Compared to low-quality aftermarket parts, this component ensures:
- preservation of the original fuel delivery characteristic across the entire RPM range,
- better compatibility with the factory engine control unit and emission control systems,
- reduced risk of improper atomization, which can lead to excessive wear of pistons and valves,
- more predictable engine behavior after fuel system repair.
Diagnostics and Preventive Maintenance of the Injection System
When replacing an injector in a diesel engine, it’s worth paying attention to symptoms typical of wear: uneven idling, increased fuel consumption, smoke, or characteristic knocking under load. If you want to better understand when injector nozzle replacement is necessary and what the consequences of neglect are, check out the article: Diesel Injector Faults – How to Recognize Them and What Neglecting Them Entails.
Mercedes Injector Nozzles – Related Offer
If you are looking for other Mercedes injector nozzles for your car, check out our dedicated category: Mercedes injector nozzles. This will allow you to easily compare available injection components for different models and engine versions of this brand.
Economic and Environmental Aspect
Choosing a used injector from a dismantled vehicle is not only a cost saving compared to a new part but also real support for the circular economy. The reuse of functional components reduces waste and decreases the demand for new component production. If you want to learn more about the impact of such decisions on the environment and your budget, read: How Used Parts from Dismantling Support the Circular Economy and Your Wallet.
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