Turbocharger Mercedes W204 Diesel OM642 Turbocharger A6420901186

Mercedes W204 Diesel OM642 Turbocharger A6420901186 is an original equipment turbocharger from the Turbochargers & Parts category, designed for the OM642 diesel engines in Mercedes W204 models. The OEM component used ensures factory fit, predictable performance parameters, and consistency with the factory characteristics of the power unit.

Specifications and technical data

• SKU: A6420901186
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420901186
• Substitutable numbers: A6420901186, A 642 090 11 86
• Fuel type: Diesel
• Category: Turbos & Parts

Purpose and technical characteristics

The offered turbocharger is a component of the diesel engine's supercharging system, compatible with the OM642 unit used in the Mercedes W204. The OEM design guarantees standard turbocharging parameters, proper integration with the engine management system, and appropriate torque characteristics throughout the entire rev range.

As part of the turbocharger and parts group, this component is designed for stable operation at high exhaust temperatures and under heavy loads typical of diesel engines. Carefully selected materials and rotor geometry promote efficient cylinder filling, which translates into dynamic acceleration and efficient fuel utilization.

Application in the OM642 diesel engine

The OM642 engine is an advanced Mercedes diesel engine in which the turbocharger plays a key role in building boost pressure. Properly matching this component to the specific engine configuration is crucial for:

• maintaining the correct boost pressure throughout the entire rev range,
• stable operation of the injection system and engine control system,
• maintaining the factory performance and operating culture of the drive unit,
• optimal combustion of the mixture, which promotes lower fuel consumption.

A properly selected turbocharger for the OM642 in the W204 allows you to maintain a balance between dynamics and driving economy, without the need to modify the engine control unit software.

Condition, origin and benefits of choosing a used part

The turbocharger presented here is a used part from the original Mercedes production line. These OEM components are valued for their factory fit, predictable performance in the drivetrain, and compliance with the manufacturer's service documentation.

Choosing a used OEM turbocharger for a Mercedes W204 with an OM642 diesel engine is a solution that allows you to:

• maintain the original vehicle specification without interfering with the design of the charging system,
• reduce repair costs compared to a new element while maintaining the factory design,
• avoid fitment problems typical of some replacements with different geometry or different control.

Turbocharger selection by numbers and compatibility

Due to the specific nature of the Mercedes-Benz W204's turbocharging system, selecting a turbocharger based on its OEM part number and available interchangeable part numbers is crucial. This allows you to verify compatibility with a specific version of the OM642 diesel engine and avoid installation or operation issues.

The product description and technical specifications section include OEM designations and reference numbers to help you match the component to your specific vehicle. If in doubt, compare the designations with your current turbocharger or service documentation.

Why choose an OEM Mercedes turbocharger for your W204?

Using original turbochargers in Mercedes diesel engines brings a number of practical benefits:

• factory fit for the exhaust and intake system of the W204 with the OM642 engine,
• compatibility with engine control software and boost maps,
• consistency with other system components (intercooler, manifolds, accessories),
• maintaining standard operating parameters without the need for additional modifications.

For users who want to maintain the driving characteristics intended by the manufacturer, a used original equipment turbocharger is a reasonable compromise between cost and quality.

Other Mercedes turbochargers and used parts knowledge

If you're looking for other turbochargers for Mercedes, check out our dedicated category: Turbochargers for Mercedes . There you'll find a wide selection of OEM and used components, suitable for various models and generations.

When planning to buy a used turbocharger or other drivetrain components, it's worth familiarizing yourself with practical tips for selecting parts. Our guide: The Best Used Car Parts – A Guide to the Most Popular Original Parts can be helpful. We discuss what to look for when choosing aftermarket components for popular makes and models.