Mercedes W169 640940 640.940 Diesel Turbocharger Housing Part A6460900080

Mercedes W169 640940 640.940 Diesel Turbocharger Part A6460900080 is an original component from the Turbochargers and Parts group, designed for diesel engines in compact Mercedes A-Class W169 generation models. A used turbocharger allows for an economical yet technically sound repair of the boost system, while maintaining the engine's performance characteristics in line with the manufacturer's standards.

Specifications and technical data

• SKU: A6400902780-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6400902780
• Substitutable numbers: A6400902780, A 640 090 27 80, A6401400687, A 640 140 06 87, A 6409060000, A 640 906 00 00
• Location on the vehicle: Front
• Fuel type: Diesel
• Category: Turbos & Parts

Intended Use and Function in the Powertrain

The presented turbocharger is a component intended for installation at the front of the vehicle, within the engine bay, in Mercedes A-Class W169 series cars with a diesel engine. It is responsible for compressing the air drawn into the cylinders, which increases the efficiency of diesel fuel combustion, improves dynamics at low and medium RPMs, and maintains stable engine operating parameters.

Selecting the correct turbocharger for a specific engine version is crucial for proper boost control, cooperation with the injection system, and maintaining the factory engine control unit maps. Using an original component with the correct part numbers and interchangeable numbers minimizes the risk of fitting issues and reduces the need for additional modifications.

Benefits of Using an Original Turbocharger

Choosing a used, original turbocharger for a Mercedes W169 offers a range of practical technical and economic benefits:

• maintaining torque and power characteristics consistent with the manufacturer's factory specifications,
• proper cooperation with the diesel engine's fuel supply system,
• appropriate fit for mounting points and accessories in the engine bay,
• reduced repair costs compared to purchasing a new component,
• the possibility of using the existing engine control unit configuration without software intervention.

This ensures that the user maintains the integrity of the entire powertrain, and the turbocharger replacement process is predictable in terms of installation and operation.

Integration with the Diesel Engine System

A turbocharger in a diesel engine operates under demanding thermal and pressure conditions, making it essential to use a component compatible with the engine's design. The described sub-assembly is designed to work with the exhaust, intake, and engine control systems in Mercedes A-Class vehicles, allowing for the maintenance of appropriate boost levels, exhaust emissions, and fuel consumption.

A correctly selected turbocharger supports stable idle operation, smooth acceleration, and proper response to load, which is important both in city traffic and during intercity driving. Using a component from the same design group as the factory part reduces the risk of leaks, improper routing of oil and air lines, and installation problems.

Condition, Fitment, and Practical Application

The offered turbocharger is a used component, which helps reduce service costs while maintaining compliance with the vehicle's factory specifications. This type of solution is particularly beneficial for intensively used vehicles where a sensible balance between financial outlay and maintaining powertrain efficiency is important.

Before installation, standard servicing procedures are recommended, including checking the lubrication system, intake and exhaust lines, and verifying for leaks. A correctly performed turbocharger replacement restores proper boost parameters, reduces smoking, and improves the refinement of the diesel engine's operation.

Mercedes Turbochargers and Parts – Boost System Expansion and Service

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as turbocharger housings, actuator motors, or mounting elements, check the available parts in the Mercedes Turbochargers and Parts category.

To compare different manufacturers' approaches to maintaining brand character and component quality, it is worth reading an article describing how original components influence driving characteristics and the perception of a car – you can find more information in the material Audi and Emotion in Pure Form. How Used Parts Help Maintain Brand DNA?.