Mercedes W211 Fuel Pump Mounting Screw Ring Lock E200 271956 Petrol 1250759

Mercedes W211 Fuel Pump Mounting Screw Ring Lock E200 271956 is a specialized fuel system component designed for petrol engines of this series. It ensures a tight and stable mounting of the fuel pump module, which translates into safe operation of the fuel system and correct pressure within the installation. It is a practical solution for users who want to restore the efficiency of the factory configuration in a controlled and predictable manner.

Specifications and technical data

• SKU: 1250759
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: 1250759
• Fuel type: Petrol
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The fuel pump mounting screw ring lock in the Mercedes W211 E200 model with the 271956 unit is responsible for mechanically pressing the pump housing against the tank flange, which allows for maintaining a seal between the fuel chamber and the environment. In a petrol engine, the correct installation of this component is crucial for:

• maintaining a stable connection of fuel lines and hoses,
• reducing the risk of leaks at the junction of the pump and the tank,
• maintaining the proper operating parameters of the fuel system under various loads.

Thanks to its fitment for the specific Mercedes configuration, the screw ring lock works with the factory pump housing and components from the Lines, hoses, and pipes group, creating a cohesive fuel flow system.

Benefits of using the original design

Using a screw ring lock dedicated to the Mercedes W211 E200 allows for maintaining compliance with the factory geometry of the pump seat and the thread in the tank. This translates into:

• precise fitment with the tank flange and pump housing,
• correct positioning of fuel lines without tension,
• easier disassembly and reassembly during service.

Such a solution is particularly beneficial during service work within the fuel system, where connection stability and maintaining a seal have a direct impact on the vehicle's operational safety.

Characteristics of the used component

The offered screw ring lock comes from disassembly, which means it is a used component that retains the functionality required for further operation. In practice, this allows for an economical repair of the fuel system while maintaining the original Mercedes design. The used component is a good choice wherever dimensional and material compliance with the factory solution is important, and at the same time, controlling service costs is a priority.

Integration with the fuel line system

The screw ring lock works with components that carry fuel from the tank to the engine compartment, such as flexible lines and rigid pipes. Proper tightening and seating of this element helps to:

• maintain the constant position of the pump outlet ports relative to the lines,
• minimize vibrations transmitted to the fuel hoses,
• limit the risk of micro-leaks at the connections.

Thanks to this, the petrol supply system in the Mercedes W211 E200 can operate under stable conditions, which promotes smooth engine operation and predictable vehicle behavior.

Technical support and additional information

If you are planning a comprehensive repair or upgrade of the fuel system area in your Mercedes and need other components from the same group, such as flexible supply lines, return fuel hoses, or rigid pipes, check the available parts in the Mercedes lines, hoses, and pipes category.

For those interested in a broader context of technical solutions used by the manufacturer, including the evolution of fuel systems and the design of accompanying components, the article describing the development of flagship models may be helpful – Evolution of the Mercedes S-Class: from W140 to W222 – innovations, model differences, and Mercedes auto parts over the years. It allows for a better understanding of the brand's design philosophy and approach to selecting spare parts.