Mercedes W204 W212 W906 OM642 Diesel Engine Camshaft Exhaust Outlet A6420504601

Mercedes W204 W212 W906 OM642 Diesel Engine Camshaft Exhaust Outlet is a precision timing system component designed for OM642 diesel engines, used in popular Mercedes C-Class and E-Class models as well as commercial vehicles. As part of the Camshafts group, it is responsible for the precise control of exhaust valve timing, which translates into stable engine operation. Using an OEM component is a sensible choice for professional diesel engine repair when structural fit and predictable performance are essential.

Specifications and technical data

• SKU: A6420504601
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420504601
• Substitutable numbers: A6420504601, A 642 050 46 01
• Fuel type: Diesel
• Category: Camshafts

Purpose and role in the OM642 engine

The exhaust camshaft in the OM642 engine is responsible for controlling valve operation in the exhaust cycle, which has a direct impact on the performance parameters of the diesel unit. For Mercedes W204, W212, and W906 models, a correctly selected camshaft is crucial for:

• maintaining proper timing synchronization in the diesel engine,
• stable operation at idle and under load,
• correct cylinder filling and scavenging,
• reducing unwanted vibrations and noise in the valve train.

By maintaining factory cam geometry and appropriate rigidity, the exhaust camshaft supports proper operating culture of the OM642 unit and helps keep exhaust emission parameters within the limits specified by the manufacturer.

Benefits of using an original camshaft

Choosing an original exhaust camshaft for a Mercedes brings a number of practical service and operational benefits:

• Factory fit – dimensional compatibility with the cylinder head and other timing components is maintained, which facilitates installation and adjustment.
• Consistency with diesel engine characteristics – the cam profile is tailored to the specifics of the OM642 unit, which helps maintain proper torque and flexibility.
• Predictable behavior in long-term operation – the original design ensures stability of operating parameters under typical conditions for passenger and commercial vehicles.

By using a used, original element from this group, you can in many cases optimize repair costs while maintaining high compliance with Mercedes' factory design assumptions.

Application in Mercedes W204, W212, W906 vehicles

The presented exhaust camshaft is intended for OM642 units mounted in various bodies and drivetrain configurations. In practice, this means it can be used in:

• mid-size cars (C and E segment) with diesel engines,
• commercial and delivery vehicles, where durability and repeatability of engine operation are important,
• heavily used units where the timing system is particularly exposed to stress.

Thanks to this, the camshaft can be used both for standard repairs and for more extensive engine maintenance, including, for example, replacing several valve train elements in a single service process.

Condition, verification, and part selection

The item comes from dismantling and is offered as a used OEM component, which allows for combining a favorable cost with the preservation of the original design. Before installation, a standard workshop inspection is recommended, including, among others, assessment of the cam working surfaces, bearing journals, and clearances in the system, in accordance with service procedures for diesel engines.

When selecting an exhaust camshaft for a specific Mercedes vehicle, it is worth verifying compatibility with the OM642 unit and the vehicle configuration. Comparing part identification data and engine parameters is helpful to ensure full compatibility with the cylinder head, tappets, and other timing components.

Repair expansion and additional information

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as additional camshafts, mating parts, or complementary components, check the available parts in the Mercedes Camshafts category.

When deciding whether to use a remanufactured part or a used original one, a guide discussing the differences between these solutions may be helpful – you can find more information in the article Remanufactured or used original – which part to choose for repair?.