Mercedes W164 W204 W211 W212 OM642 3.0 Diesel Engine Crankshaft A6420302601

Mercedes W164 W204 W211 W212 OM642 3.0 Diesel Engine Crankshaft is an original part from the Crankshafts group, designed for the OM642 3.0-liter diesel engine. Using a used crankshaft of this type allows for a technically correct engine rebuild while maintaining factory operating parameters and the characteristics of the diesel engine.

Specifications and technical data

• SKU: A6420302601-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420302601
• Substitutable numbers: A6420302601, A 642 030 26 01
• Fuel type: Diesel
• Category: Crankshafts

Purpose and compatibility

The presented crankshaft is dedicated to OM642 3.0 Diesel power units used in Mercedes W164, W204, W211, and W212 class models. Using an original component from the same engine family ensures proper fitment with the block, bearings, and lubrication system, which translates into stable operation of the entire crank-piston system.

By maintaining factory geometry and characteristics, the crankshaft helps maintain proper engine refinement, reduce torsional vibrations, and ensure correct cooperation with the crank-piston system and the balance shaft, if present in the specific configuration.

Technical characteristics of the crankshaft

The crankshaft for the OM642 3.0 Diesel engine is designed for high loads characteristic of diesel units – high torque at low and medium engine speeds. The design ensures:

• adequate torsional and bending stiffness,
• precise shaping of main and connecting rod journals,
• oil channels adapted for pressurized lubrication in a diesel engine,
• cooperation with the stock piston, connecting rod, and bearing system.

Selecting the right crankshaft is crucial for engine durability, even load distribution, and maintaining proper oil pressure. Using a component from the same design family helps avoid issues with alignment, incorrect bearing clearance, or excessive vibrations.

Application in the OM642 3.0 Diesel engine

The OM642 3.0 Diesel engine is a popular unit used in many Mercedes models, known for its high torque and good efficiency. The crankshaft in such an engine operates under significant load, which is why it is particularly important to use a component of appropriate quality and origin when overhauling the power unit. A used, original crankshaft allows for maintaining factory operating parameters while optimizing repair costs.

A properly selected crankshaft supports smooth engine operation, correct system balancing, and stable performance across the full rev range, which is important both in daily operation and during more intensive vehicle use.

Benefits of using an original used crankshaft

Choosing an original, used component from the Crankshafts group is a solution that allows you to combine technical correctness with a reasonable budget. This type of part:

• maintains factory fitment with other engine components,
• reduces the risk of compatibility issues typical of aftermarket parts of unknown origin,
• allows for a significant reduction in engine overhaul costs compared to a new part.

If you want to better understand how to optimize service costs while maintaining appropriate quality, it is worth reading the article on rising repair costs and the cost-effectiveness of used OEM parts, which discusses practical ways to reasonably select components.

Expansion and other elements from the Mercedes crankshaft group

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 intermediate shafts, crank system elements, or additional components working with the crankshaft, check out the available parts in the Mercedes Crankshafts category.