Gear Mercedes W245 Diesel OM640 Crankshaft Gear Oil Pump Drive A6400500103

Gear Mercedes W245 Diesel OM640 Crankshaft Gear Oil Pump Drive is a precision component of the lubrication system, designed for OM640 diesel engines. It is responsible for the stable transmission of drive to the oil pump, which is crucial for the durability of the power unit and operational safety. Using an original component from this group allows for a technically correct repair without interfering with the engine's construction.

Specifications and technical data

• SKU: A6400500103
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6400500103
• Substitutable numbers: A6400500103, A 640 050 01 03
• Fuel type: Diesel
• Category: Oil Pumps & Parts

Purpose and role in the lubrication system

The described crankshaft gear for the oil pump drive operates in a diesel engine, where the lubrication system is particularly stressed due to high pressures and torques. This component is responsible for:

• mechanical connection between the crankshaft and the oil pump,
• maintaining proper synchronization of the pump relative to the crankshaft,
• stable load transmission across a wide range of rotational speeds.

By maintaining factory geometry, proper oil pressure is achieved throughout the entire operating range of the power unit, which reduces the risk of bearing seizure, excessive wear of the timing system, and other cooperating components.

Benefits of using an original gear

In diesel engines, such as the OM640 unit, the precision of oil pump drive components has a direct impact on the lifespan of the entire engine. Using an original gear from the Oil pumps and parts group ensures:

• preservation of factory clearances and fits in the pump drive system,
• appropriate hardness and resistance to material fatigue,
• compatibility with other lubrication system components in the given diesel engine.

A used, functional component of this type is a reasonable solution for repairs where both technical and economic aspects matter, while simultaneously maintaining the original engine operating characteristics.

Application in the OM640 diesel engine

Diesel engines require a stable oil supply at the appropriate pressure, especially during long-term driving under load. The crankshaft gear for the oil pump drive in this application:

• operates under variable load and temperature conditions,
• must work with higher viscosity oils typical for diesel units,
• should maintain the correct tooth profile over a long service life.

Selecting the right component for a specific diesel engine helps avoid problems with oil pressure, operating noise, and accelerated wear of cooperating gears.

Integration with the Oil pumps and parts system

During service work within the lubrication system, it is worth treating the crankshaft gear as an element cooperating with other components of the same group. In practice, this means that during major repairs, one often considers simultaneous inspection or replacement of:

• the oil pump itself,
• other drive gears in the system,
• fastening and guiding 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 pump housings, drive shafts, or additional gears, check the available parts in the Mercedes Oil pumps and parts category.

Condition, origin, and economic aspect

The offered gear comes from dismantling and is a used item, which allows for a significant reduction in repair costs while maintaining the original manufacturer's specification. In many cases, using original used parts is more beneficial than installing replacements with uncertain material parameters.

If you want to better understand how the selection of original components from the secondary market affects the vehicle's resale value, it is worth reading the guide: original used parts and car resale price. For those interested in broader use of dismantled components in vehicle modification projects, the article on visual and mechanical tuning of a Seat using parts from dismantling may also be useful, as it shows a practical approach to economical car modernization.