Mercedes-Benz E-Class W207 W212 OM642 High Pressure Fuel Pump A6420701201

The Mercedes E-Class W207 W212 OM642 Injection Pump is a fuel system component designed for installation at the front of the vehicle, specifically for the OM642 engine in E-Class W207 and W212 models. This OEM Mercedes segment solution allows for the restoration of correct diesel engine operating parameters and stable fuel injection pressure. Thanks to its precise design, the pump ensures even fuel supply to all cylinders and proper compatibility with the factory electronics.

Specifications and technical data

• SKU: A6420701201
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420701201
• Substitutable numbers: A6420701201, A 642 070 12 01, BG
• Location on the vehicle: Front
• Category: Manifolds & Headers

Intended Use and Fitment for OM642 in E-Class

The presented injection pump is dedicated to the OM642 engine used in Mercedes E-Class W207 and W212 models. The design intended for front-engine mounting allows for correct fuel line routing and seamless integration with the engine's factory equipment. The use of original geometry and mounting points facilitates installation and reduces the risk of fuel system leaks.

Technical and Functional Characteristics

The injection pump is responsible for generating the correct fuel pressure in the common rail system, which directly impacts engine smoothness, dynamics, and fuel consumption. This component works with the factory engine control unit, enabling:

• stable maintenance of fuel rail pressure across the full load range,
• precise fuel metering to injectors,
• correct operation of exhaust emission control systems,
• preservation of the OM642 engine's factory performance parameters.

By adhering to the original design specifications, the pump integrates seamlessly with the existing fuel system and control system, without the need for modifications or adaptations.

Condition, Origin, and Benefits of Choosing OEM Parts

The offered injection pump comes from a Mercedes vehicle and is categorized under exhaust manifolds, which in the context of the store's offering means it's grouped with equipment related to the exhaust and fuel systems in diesel engines. As an original OEM part, it retains factory operating parameters, translating to predictable engine behavior after installation.

Choosing a used OEM component instead of an uncertain aftermarket replacement offers primarily:

• compliance with factory service documentation,
• certainty of fitment for the specific OM642 engine configuration,
• reduced risk of adaptation issues and engine control unit errors,
• economical repair while maintaining a high-quality component.

If you want to better understand why used original parts are often a more sensible choice than new aftermarket ones, check out our guide 5 Reasons Why a Used OEM Part is a Better Choice Than an Aftermarket Replacement.

Installation at the Front of the Vehicle and Service Aspects

The placement of the injection pump at the front of the engine facilitates service access and inspection for potential leaks. When replacing, it is recommended to:

• thoroughly bleed the fuel system after installation,
• verify the condition of high-pressure lines and seals,
• check fuel pressure parameters using computer diagnostics,
• monitor engine operation at idle and under load.

This approach allows for the full utilization of the potential offered by the injection pump for the Mercedes E-Class W207/W212 and reduces the risk of secondary fuel system failures.

Related Exhaust Manifolds and Technical Knowledge

If you are looking for other Mercedes exhaust manifolds compatible with various models of this brand, check out our dedicated category: Mercedes Exhaust Manifolds. There you will find exhaust system components selected for specific body series and engine units.

Want to expand your knowledge about exhaust systems and engine equipment, including used manifolds in cars like Mercedes, BMW, Audi, VW, or Mini? See the practical article Performance Exhaust Systems: Used Manifolds and Sport Catalytic Converters on the Road, where we discuss component selection and typical exhaust system modifications.