Description
Mercedes W169 W245 Diesel OM640 Injector Nozzle is an original fuel system component designed for diesel engines, ensuring precise fuel delivery and stable engine operation. This product, categorized under Injector Nozzles, has been specifically designed for Mercedes vehicles, guaranteeing proper structural fit and compliance with factory manufacturer requirements.
Specifications and technical data
- SKU: A6400701287
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A6400701287
- Substitutable numbers: A6400701287, A 640 070 12 87, KZ
- Fuel type: Diesel
- Category: Fuel Injectors
Application in OM640 Diesel Engine
The presented injector is intended for the fuel system of Diesel engines, where it is responsible for atomizing fuel at the correct pressure and at the right moment in the operating cycle. A properly selected injector nozzle is crucial for:
- maintaining smooth engine operation across the full RPM range,
- stable combustion parameters during cold and warm starts,
- reducing smoke emissions and improving the engine’s running refinement.
Thanks to its design complying with Mercedes requirements, the injector works with the factory engine control unit, facilitating diagnostics and calibration in a professional service center.
Technical Characteristics of the Injector Nozzle
This component belongs to the Injector Nozzles category, meaning its primary function is to precisely shape the fuel spray in the combustion chamber. In practice, this translates to:
- accurate fuel metering depending on load and engine speed,
- correct shape of the atomized fuel mist, promoting efficient combustion,
- reduced fuel consumption while maintaining nominal engine power.
A properly selected injector nozzle also helps to reduce the risk of uneven idling and power loss during dynamic acceleration.
Compatibility and Part Identification
The injector has been developed with Mercedes vehicles in mind, ensuring geometric and hydraulic compatibility with the factory fuel system. The part has a dedicated OEM number and interchangeable numbers, allowing for unambiguous identification in service catalogs and parts selection systems. If you have doubts about fitting a specific body style or engine variant, it is advisable to verify compatibility by part number or consult a mechanic.
Product Condition and Benefits of Choosing an Original Injector Nozzle
The offered injector is a used component, making it an attractive solution for users seeking a technically sound component at a reasonable budget. Choosing an original Mercedes injector nozzle allows for maintaining:
- factory operating parameters of the injection system,
- proper interaction with the engine electronics,
- appropriate starting and acceleration characteristics.
Before installation, it is recommended to perform diagnostics on the entire fuel system to rule out additional faults (e.g., in the high-pressure pump or return lines), which will allow for the full utilization of the installed injector’s potential.
Diagnostics and Operation of Diesel Injectors
A malfunctioning injector nozzle can cause starting difficulties, power loss, increased fuel consumption, or excessive smoke. To better understand the symptoms and consequences of wear in the injection system components, it is worth reading the article describing diesel injector faults – symptoms, consequences, and diagnostic methods. This knowledge facilitates the decision to replace a single injector or a complete set.
Other Mercedes Injector Nozzles and Used Parts
If you are looking for other Mercedes injector nozzles compatible with various models and engine versions, check out our offer in the Mercedes injector nozzles category, where you will find a wide selection of fuel system components. Doubts regarding the quality of used parts can be dispelled by the guide on used car parts – myths and facts, which explains what to look for when purchasing components from the secondary market.
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