Mercedes W212 Diesel Engine Fuel Tank Pump Sender Delivery Unit A2124700494

Mercedes W212 Fuel Pump A2124700494 is an original part from the Fuel Pumps and Level Sensors group, designed for diesel engine fuel systems. This used Mercedes part helps maintain factory fuel system operating parameters, contributing to stable vehicle operation.

Specifications and technical data

• SKU: A2124700494-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2124700494
• Substitutable numbers: A2124700494, A 212 470 04 94
• Fuel type: Diesel
• Category: Fuel Pumps & Sending Units

Purpose and Function in the Fuel System

The fuel pump in Mercedes E-Class W212 models is responsible for precisely supplying the engine with diesel fuel at the correct pressure. For Diesel engines, the proper functioning of the pump is crucial for stable starting, smooth idling, and correct fuel delivery across the entire load range.

The component in this group works in conjunction with fuel level sensors and other fuel system components, forming a cohesive system responsible for:

• maintaining the correct fuel pressure on the low or high-pressure side (depending on vehicle configuration),
• ensuring a continuous fuel supply to the injection system,
• stabilizing engine operation under varying loads.

Benefits of Using an Original Mercedes Pump

Using a fuel pump from the Mercedes offering allows for compliance with the vehicle's factory specifications. An original component from the Fuel Pumps and Level Sensors category is designed for a specific fuel system architecture, thus:

• ensuring proper flow and pressure parameters for diesel engines,
• reducing the risk of starting problems and power drops due to insufficient fuel supply,
• facilitating diagnostics – operating parameters are consistent with manufacturer-specified values.

A used fuel pump can be an attractive solution if you want to maintain the original system design while optimizing repair costs.

Selection by Numbers and Integration with Diesel Systems

The presented fuel pump is designed for Diesel fuel systems, meaning it is adapted to the higher pressure requirements and specific injection characteristics of diesel engines. Selecting parts by OEM number and interchangeable numbers allows for precise matching to a specific equipment version and vehicle year, minimizing the risk of installation incompatibility.

In practice, a correctly selected fuel pump translates to:

• proper cooperation with existing engine accessories,
• no need for fuel system modifications,
• maintaining factory control maps in the engine control unit.

If you want to better understand the relationships between the fuel pump, injectors, and fuel tank, as well as the principles of selecting parts by OEM number, the article will be helpful: Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair.

Part Condition and Service Application

The offered fuel pump is a used component, making it a sensible alternative for routine repairs or restoring vehicle functionality after a fuel system failure. Such components are often chosen for:

• fleet vehicle repairs,
• servicing vehicles with higher mileage,
• restoration projects where maintaining original design solutions is important.

By maintaining compliance with factory specifications, installation is similar to replacing with a new part, without the need for intervention in the fuel system or wiring harness.

System Expansion – Other Elements from the Same Group

If you are planning a comprehensive repair or upgrade of the fuel system area in your Mercedes and need other elements from the same group, such as additional pumps, power modules, or fuel level sensors, check the available parts in the Mercedes Fuel Pumps and Level Sensors category.