Mercedes W177 Engine High Pressure Fuel Injection Pump M282 A2820702500

Mercedes W177 Engine High Pressure Fuel Injection Pump M282 is an original fuel system component designed for precise operation with the M282 unit. This used pump from this series ensures stable, high pressure in the fuel rail, which translates into correct fuel metering and smooth engine operation. This is a solution for users who are looking for a proven OEM component instead of unreliable replacements.

Specifications and technical data

• SKU: A2820702500
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2820702500
• Substitutable numbers: A2820702500, A 282 070 25 00, 0261520769, 0 261 520 769
• Fuel type: Petrol
• Category: Fuel Pumps & Sending Units

Purpose and role in the fuel system

The high-pressure fuel injection pump in the M282 engine is responsible for generating sufficiently high gasoline pressure for direct injectors. It works in conjunction with the low-pressure pump in the tank, stabilizing the system's operating parameters across a wide range of loads and engine speeds. This allows the engine control unit to precisely manage the fuel dose, which promotes efficient starting, smooth operation, and optimal combustion.

In Mercedes vehicles with the M282 engine, a properly functioning high-pressure pump is crucial for maintaining power, flexibility, and compliance with emission standards. Its wear or improper operation often manifests as a drop in performance, jerking during acceleration, or fuel system errors.

Benefits of using an original Mercedes pump

Using an original high-pressure pump dedicated to the M282 unit allows you to maintain the factory operating parameters of the fuel system. The OEM design is engineered for a specific engine, which ensures that it:

• provides the correct operating pressure across the entire RPM range,
• maintains stable operation of gasoline injectors,
• reduces the risk of overheating and fuel cavitation,
• supports the proper functioning of emission control systems.

For the user, this means more predictable vehicle behavior, a lower risk of sudden failures, and better compatibility with the factory engine control unit software.

Technical characteristics and compatibility

The presented pump belongs to the Fuel pumps and level sensors category and is intended for gasoline fuel systems. The design is adapted for operation in modern direct fuel injection units, where high operating pressures and rapid response to load changes are required.

Before purchasing, it is worth verifying the pump's compatibility with the specific engine version and vehicle model year using the OEM part number and available interchangeable numbers in the specification section. This allows you to select a component that will work correctly with the existing fuel system and vehicle electronics.

Condition, verification, and installation

The pump is offered as a used item, which represents a reasonable compromise between cost and functionality compared to new components. Before installation, a standard check of the fuel system, line tightness, and fuel filter condition is recommended to avoid overloading the newly installed component.

In practice, installing a high-pressure pump in an M282 engine requires maintaining system cleanliness, proper tightening torque for connections, and bleeding the fuel line according to the service procedure. A correctly performed replacement helps restore stable fuel pressure and eliminate typical symptoms of an old pump's wear.

Technical support and additional information

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as low-pressure pumps, fuel modules, or level sensors, check the available parts in the Mercedes fuel pumps and level sensors category.

When selecting used components for modern fuel and control systems, it is worth paying attention to how their efficiency is verified and how they are matched to the vehicle's electronics. Practical tips on choosing used control elements and sensors can be found in the article: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?