Mercedes W204 C207 Balance Shaft Crankshaft Drive Left N/S OM651 A6510340612

Mercedes W204 C207 Balance Shaft Crankshaft Drive Left N/S OM651 is a precision component from the Mounting parts and drive brackets group, designed for the timing system in the OM651 engine. It is responsible for stable power transmission in the left part of the mechanism, which has a direct impact on the engine's operating smoothness and durability.

Specifications and technical data

• SKU: A6510340612
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6510340612
• Substitutable numbers: A6510340612, A 651 034 06 12
• Location on the vehicle: Left
• Category: Drivetrain Hardware & Fasteners

Purpose and function in the timing system

The presented timing gear is dedicated to the OM651 unit used in Mercedes W204, C207, and W212 models. As a component responsible for synchronizing the operation of shafts and other timing sub-assemblies, it influences the correct control of timing phases, idle stability, and proper fuel mixture combustion.

Its placement on the left side of the timing system ensures proper drive guidance in this part of the mechanism, which is crucial when replacing individual components or during comprehensive engine service.

Construction and mounting fit

The gear has been designed as a component structurally compliant with Mercedes factory standards, which translates into the correct tooth profile, appropriate geometry, and fitment with mating timing components. This allows for maintaining proper tension and drive guidance without the need for modifying other parts.

Precise machining of the working surfaces reduces the risk of excessive wear on mating components, and the appropriately selected material ensures stable operation across a wide range of loads and temperatures typical for the OM651 diesel engine.

Vehicle placement and service aspects

The component is intended for installation on the left side of the timing system, which is important when planning service work and selecting the correct parts. Clearly defined vehicle placement makes it easier for mechanics and users to identify the component during inspection or repair.

Replacing the gear in this area is recommended especially when there are noticeable symptoms of timing wear, such as noise, uneven engine operation, or signs of excessive play in the drive. Using the correct component allows for restoring proper synchronization and reducing the risk of more serious engine damage.

Product characteristics and practical application

The left timing gear for a Mercedes with an OM651 engine is suitable for both standard maintenance replacements and major engine repairs. The used nature of the part allows for an economical restoration of system efficiency while maintaining compliance with factory specifications.

The product comes from the Mercedes brand, which helps maintain the structural integrity of the entire drive and minimizes the risk of compatibility issues during installation.

Drive system expansion and selection of related components

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 gears, brackets, or drive supports, check the available parts in the Mercedes mounting parts and drive brackets category.

For users interested in comparing solutions used in various diesel units and analyzing operating costs and the availability of aftermarket parts, a valuable source of knowledge is the article: BMW N47 vs M57 / M57N / M57N2 – a ranking of legendary diesels: performance, reliability, and aftermarket parts costs.