Fuel Pump Mercedes W204 W212 M271 High Pressure Injection Pump A2710702201

Mercedes W204 W212 Fuel Injection Pump M271 Gasoline A2710702201 is an original part from the High-Pressure Fuel Pumps group, designed for M271 gasoline engines in Mercedes W204 and W212 models. The used pump is a functional service solution, allowing for the restoration of correct fuel supply in the injection system while maintaining the factory operating characteristics of the powertrain.

Specifications and technical data

• SKU: A2710702201
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2710702201
• Substitutable numbers: A2710702201, A 271 070 22 01
• Fuel type: Petrol
• Category: High Pressure Fuel Pumps

Purpose and Role in the Fuel System

The presented high-pressure pump is responsible for generating operating pressure in the M271 gasoline engine's injection system. It works in conjunction with the low-pressure part of the fuel system, ensuring stable supply to the fuel rail and proper injector operation across the full range of loads and speeds.

Thanks to its design adapted to the specifics of M271 units, the pump maintains the correct fuel pressure parameters, which translates to smooth engine operation, proper throttle response, and reduced risk of fuel-air mixture errors.

Benefits of Using an Original Mercedes Pump

Using an original pump from the High-Pressure Fuel Pumps group in the M271 engine's fuel system ensures compliance with the manufacturer's factory specifications. Proper matching to the cylinder head, drive shaft, and engine control minimizes the risk of starting problems, power loss, or unstable idle speeds.

The main advantages of installing this pump in Mercedes W204 and W212 models include:

• maintaining factory fuel pressure characteristics across the entire engine operating range,
• compatibility with the M271 unit's control system,
• reduced risk of leaks and mismatches typical of aftermarket parts of uncertain origin,
• the possibility of using the existing fuel system and accessories without additional modifications.

Technical Characteristics and Installation

The pump is designed to work with gasoline fuel, which is crucial for proper cooperation with the M271 engine. The design foresees direct mounting on the engine, with mechanical drive from the engine, ensuring precise synchronization with the timing and injection system phases.

Before installation, it is recommended to verify compatibility by OEM number and interchangeable numbers, as well as to check the condition of accompanying components such as high-pressure lines or seals. A correctly selected and installed pump reduces the risk of fuel leaks and system bleeding problems.

Fuel System Selection, Diagnostics, and Operation

In case of symptoms such as starting difficulties, power loss, jerking during acceleration, or ECU errors related to fuel pressure, one of the key components to check is the high-pressure pump. Selecting parts by OEM number and compatible reference numbers helps avoid mistakes and ensures the correct operation of the entire system.

To better understand the relationships between the pump, injectors, and fuel tank, as well as the principles of diagnostics and operation, it is worth consulting a specialized publication: Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair. The article discusses, among other things, part selection by OEM numbers, typical wear symptoms, and service recommendations.

Comprehensive Mercedes Injection System Service

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as additional pumps, high-pressure lines, or fuel rail supply components, check the available parts in the Mercedes High-Pressure Fuel Pumps category.

When choosing between a used and a reconditioned part, a service guide discussing the practical advantages of both solutions in a workshop setting may also be helpful: Reconditioned or Used Original – Which Part to Choose for Repair?. This will help you better match your repair strategy to the vehicle's condition, budget, and expected service life.