Mercedes W176 C117 Crankshaft Gear Engine Position Chain Wheel M270 A2640520000

Mercedes W176 C117 Crankshaft Gear Engine Position Chain Wheel M270 A2640520000 is a precision timing system component designed for the gasoline engines of this series. It is responsible for the stable transmission of drive from the crankshaft to the remaining timing components, which is crucial for proper engine synchronization and maintaining its efficiency. Using an original component is a sensible choice for professional repairs where fitment and predictable operational performance are essential.

Specifications and technical data

• SKU: A2640520000
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2640520000
• Substitutable numbers: A2640520000, A 264 052 00 00
• Location on the vehicle: Left
• Fuel type: Petrol
• Category: Crankshafts

Purpose and function in the timing system

The timing chain gear in the M270 engine is responsible for the mechanical coupling of the crankshaft with the other timing components. In gasoline units, it ensures:

• stable timing chain guidance under various engine loads,
• maintenance of proper timing phases across the entire RPM range,
• reduction of play and unwanted vibrations in the timing drive.

The positioning on the left side of the vehicle determines the installation method and service access, which is why it is important to use a component that is structurally compatible with the specific engine and body configuration. A correctly selected gear helps maintain the engine's smooth operation and reduces the risk of costly failures resulting from timing misalignment.

Compatibility with the M270 gasoline engine

The presented component has been designed to work with the M270 series gasoline engines used in Mercedes compact class models, such as the W176 or C117. The gear design is adapted to the operating characteristics of gasoline-powered units, which translates into:

• an appropriate tooth profile for interaction with the timing chain,
• strength parameters selected for dynamic loads,
• compatibility with the factory lubrication and chain guidance system.

As a result, this component can be used both for standard repairs and for more advanced service work related to refreshing the crankshaft-piston system and timing drive.

Characteristics of the used original component

The gear comes from the Crankshafts category, which emphasizes its close connection to the crankshaft system and power transmission in the engine. As a used part, it represents an economical alternative to new components while maintaining the original geometry and fitment to Mercedes factory standards. In practice, this means:

• maintaining dimensional compliance with the factory design,
• the possibility of installation in place of a worn component without structural modifications,
• consistency with the other timing drive elements in the given engine.

Original origin is particularly important for components that interact directly with the crankshaft, where manufacturing tolerances and material quality impact the durability of the entire system.

Service application and benefits of replacement

Replacing the timing chain gear is recommended when symptoms of timing drive wear appear, such as noise, uneven engine operation, or errors related to camshaft synchronization. Using the correct component allows you to:

• restore proper interaction between the chain and the gears,
• reduce the risk of chain skipping and valve damage,
• maintain stable engine performance parameters over a longer period.

For workshops specializing in Mercedes service, this is a component that can be included in a broader scope of work on the crankshaft and timing system, optimizing repair costs while maintaining an appropriate level of reliability.

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 idler gears, components interacting with the crankshaft, or additional drive parts, check the available parts in the Mercedes Crankshafts category.

Selection support and tuning with used parts

Selecting the right gear for a specific engine configuration requires taking into account the engine's parameters and fuel type. When planning modifications or light tuning, using original used components can be a reasonable compromise between cost and durability. You can find more practical tips on safely increasing performance using second-hand components in the article Tuning with used parts – how to gain performance without breaking the bank.

Summary

Mercedes W176 C117 Crankshaft Gear Engine Position Chain Wheel M270 A2640520000 is an original, used timing drive component designed for gasoline engines. It ensures proper power transmission from the crankshaft to the remaining timing components, supporting stable and predictable engine operation. Choosing such a component is a practical solution for users and workshops that expect compliance with the factory Mercedes design while optimizing service costs.