Crankshaft Mercedes W169 W245 Diesel OM640 Crank Shaft A6400300501

Crankshaft Mercedes W169 W245 Diesel OM640 Crank Shaft is an original component from the Crankshafts group, designed for OM640 diesel engines in A-Class and B-Class models. This used OEM part ensures factory geometry, proper balance, and compatibility with the crankshaft-piston system, which translates into stable engine operation. It is a solution for users looking for a proven component with a design that meets manufacturer standards.

Specifications and technical data

• SKU: A6400300501
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6400300501
• Substitutable numbers: A6400300501, A 640 030 05 01, KZ
• Fuel type: Diesel
• Category: Crankshafts

Purpose and technical characteristics

The presented crankshaft is dedicated to Diesel engines from the OM640 family, used in Mercedes W169 and W245 class vehicles. The shaft design has been engineered for the high loads characteristic of diesel engines, with an emphasis on the durability of main and connecting rod journals and operational stability at low and medium engine speeds.

The original crankshaft of this series ensures:

• maintenance of factory fit tolerances with the engine block and connecting rods,
• proper cooperation with the lubrication system,
• appropriate dynamic balancing of the entire crankshaft-piston assembly.

Benefits of using an original crankshaft

Using an original crankshaft in the OM640 engine helps reduce the risk of torsional vibrations, excessive bearing wear, and issues with engine smoothness. Compared to random aftermarket replacements, the used OEM component offers:

• material consistency with other engine components,
• predictable behavior under load,
• better repeatability of parameters during operation.

For workshops specializing in Mercedes service, this means easier diagnostics, a lower risk of warranty claims, and the ability to maintain the original performance characteristics of the power unit.

Application in OM640 diesel engines

OM640 diesel engines used in Mercedes W169 and W245 models operate under significant loads resulting from high torque. In such a system, the crankshaft must ensure:

• resistance to material fatigue during long-term operation,
• stable cooperation with pistons, connecting rods, and the flywheel,
• proper transmission of forces to the drivetrain.

Selecting the right crankshaft is crucial during major engine overhauls, replacements after seizure, or repairs following mechanical damage. Crankshaft Mercedes W169 W245 Diesel OM640 Crank Shaft allows for maintaining performance parameters close to factory specifications, which is particularly important in vehicles used intensively, including urban conditions.

Condition, verification, and preparation for installation

The offered item comes from disassembly and is classified as used, which provides a favorable compromise between repair costs and maintaining original construction quality. Before being listed, the shaft is verified for its suitability for further use, which helps minimize the risk of installing a component that does not meet basic service requirements.

Before installation, standard workshop procedures are recommended, such as dimensional inspection, checking journal surfaces, and matching with new bearings in accordance with Mercedes service procedures. This approach enables the safe use of a pre-owned component in a professional engine overhaul.

Repair expansion and related elements

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 shafts, mating parts, or complementary components, check the available parts in the Mercedes crankshafts category.

For larger drivetrain repairs, it is also worth considering the selection of used OEM elements in other areas to maintain the structural consistency of the entire drive – the article describing the advantages of original components, available here, may be helpful: Humming differential? Find out why a used OEM drive axle is a better investment than an uncertain replacement.