Mercedes W204 S204 C204 Turbocharger Turbo C320 CDI OM642 Diesel A6420902880

The Mercedes W204 S204 C204 C320 CDI OM642 Turbocharger is an original component of the turbocharging system designed for the diesel engine in C-Class models. A used turbocharger from this series allows you to restore the correct operating parameters of the drive unit, stable boost and correct torque characteristics in the diesel engine.

Specifications and technical data

• SKU: A6420904680
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420904680
• Substitutable numbers: A6420904680, A 642 090 46 80, 642960, A6420902880, A 642 090 28 80
• Fuel type: Diesel
• Part type: Turbocharger
• Category: Turbos & Parts

Purpose and technical characteristics

This Mercedes W204 / S204 / C204 C320 CDI OM642 turbocharger is part of the turbochargers and parts category, meaning it's a key component responsible for compressing the air drawn into the diesel engine's cylinders. Its use in a diesel engine allows for higher combustion efficiency, improved flexibility throughout the entire rev range, and reduced fuel consumption while maintaining appropriate driving dynamics.

The turbocharging system in the OM642 engine is designed for stable operation under high loads, so a properly selected turbocharger has a direct impact on:

• correct boost pressure throughout the entire rev range,
• uniform torque development typical of diesel engines,
• maintaining proper combustion parameters and operating culture of the engine.

Benefits of using an original Mercedes turbocharger

Choosing an original equipment turbocharger from the Mercedes C320 CDI OM642 series ensures a match to the vehicle's factory specifications. This means:

• the rotor and housing geometry is consistent with the manufacturer's assumptions, which translates into a predictable response to gas,
• exhaust and air flow parameters are adapted to the engine control unit maps,
• Compatibility with diesel engine accessories such as manifolds, oil lines and intake system is maintained.

The original element from this series is designed to operate in demanding operating conditions typical of diesel engines, which promotes the stability and predictability of the entire drive system.

Used condition – a practical approach to repair

The turbocharger offered is in used condition, representing a reasonable compromise between repair costs and maintaining the manufacturer's original design. For many Mercedes W204 / S204 / C204 C320 CDI owners, this solution allows for:

• reducing service costs while maintaining compliance with the factory design,
• replacing a worn or damaged turbocharger with a component of the same specification,
• maintaining the correct operating parameters of the diesel engine without the need to modify the installation.

Used condition means that the item has been previously used, therefore standard workshop verification and installation in accordance with service procedures for the OM642 engine are recommended prior to installation.

Application in the OM642 diesel engine

The OM642 engine is an advanced diesel engine in which an efficient turbocharger is crucial for performance and fuel economy. A properly selected turbocharger component affects:

• maintaining adequate power and flexibility in typical diesel rev ranges,
• stable operation under highway and city loads,
• proper cooperation with the engine control system and exhaust gas treatment systems.

Replacing the turbocharger with a model that meets factory specifications is particularly important in the event of symptoms such as loss of power, smoke or unstable acceleration, typical of a faulty turbocharging system in a diesel engine.

Other Mercedes turbochargers and service knowledge

If you are looking for other turbochargers for Mercedes – for example for other engine versions or models of this brand – check out our dedicated category of turbochargers for Mercedes , where you will find a wide selection of solutions adapted to various series of diesel and petrol engines.

When planning a supercharger repair, it's also worth familiarizing yourself with the general principles of car component maintenance. Practical tips on which vehicle components are replaced most frequently and how to optimally plan servicing can be found in the article "TOP 10 Most Frequently Replaced Parts in Your Car ," which will help you better plan your Mercedes' maintenance with regard to cost and durability.

Summary

The Mercedes W204 S204 C204 C320 CDI OM642 Turbocharger is a used, original turbocharger component designed for diesel engines, allowing the engine to be restored to its normal operating parameters. Choosing this turbocharger is a technically sound solution for drivers who expect factory-specification compliance, predictable performance, and reasonable repair costs for Mercedes C-Class vehicles with the OM642 engine.