Fuel Pump Mercedes W203 CLK W209 Diesel Delivery Unit A2034705094

Mercedes W203 W209 Diesel Fuel Pump is a component from the Fuel Pumps and Level Sensors category, designed for diesel engine fuel systems. This used, original pump is a functional service solution for Mercedes vehicles, allowing for the restoration of proper fuel supply while maintaining the original system design.

Specifications and technical data

• SKU: A2034705094
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2034705094
• Substitutable numbers: A2034705094, A 203 470 50 94, A2C53001805
• Fuel type: Diesel
• Category: Fuel Pumps & Sending Units

Purpose and Role in the Fuel System

The fuel pump in a Diesel engine is responsible for the stable delivery of diesel fuel to other components of the injection system. In Mercedes W203 and W209 models, a properly functioning pump ensures:

• maintaining adequate fuel flow across the entire engine load range,
• efficient operation of the injection system during cold and warm starts,
• reducing the risk of air entering the system and power drops during acceleration.

By adhering to the original design concept, using this pump allows for servicing in accordance with the vehicle manufacturer's specifications, without the need for fuel system modifications.

Technical Characteristics and Compatibility

The presented pump belongs to the group of Fuel Pumps and Level Sensors components, meaning it works with the factory fuel supply system and the fuel level monitoring system in the tank. Using the correct type of fuel (diesel) is crucial for:

• maintaining appropriate viscosity and lubricity within the working components,
• reducing mechanical wear of system components,
• ensuring proper cooperation with filtration and fuel lines.

When selecting a pump for a specific engine version and vehicle year, it is advisable to base your choice on the vehicle's identification data and part numbers, which minimizes the risk of installation incompatibility.

Benefits of Using an Original, Used Pump

Choosing a used original part for a Mercedes allows for a combination of rational repair costs with the preservation of the original fuel system design. The main advantages of such a solution include:

• maintaining geometry and operating parameters consistent with the vehicle manufacturer's design,
• no need for system adaptation or changes to equipment around the fuel tank,
• the possibility of economical repair in case of pump failure or engine supply problems.

For fleet and private users, this means predictable vehicle behavior after repair and reduced downtime associated with diagnostics and installation.

Professional Selection and Installation

To fully utilize the potential of this pump in a Mercedes fuel system, it is important to ensure proper selection based on the body and engine version, as well as professional installation. It is recommended to:

• verify part compatibility based on vehicle data and manufacturer markings,
• check the condition of the mounting socket in the tank and the fuel lines,
• replace the fuel filter and bleed the system after installation.

This approach reduces the risk of recurring faults and allows for stable operation of the diesel engine in daily use.

If you are planning a comprehensive fuel system service for your Mercedes and also need other components from the Fuel Pumps and Level Sensors group dedicated to this brand, check the available parts in the Mercedes Fuel Pumps and Level Sensors category.

When selecting used components for fuel systems and electronics, a guide on selecting modules and sensors may be helpful, discussing, among other things, the importance of manufacturer markings, hardware, and software compatibility – more information can be found in the article Used Automotive Electronics Onboard – Why Choose Second-Hand ECU Modules and Sensors?.

For drivers looking for ways to reduce repair costs while maintaining the quality of parts, practical tips on the cost-effectiveness of purchasing second-hand components may be useful – this topic is discussed more broadly in the article Rising Repair Costs and the Boom in Used Parts – How to Save on Car Servicing?.