Mercedes W203 A209 W211 M112 Petrol Engine Camshaft Left N/S A1120504001

The Mercedes W203 A209 W211 M112 Left Camshaft is an original part from the Camshafts group, designed for M112 gasoline engines used in popular Mercedes models. A used component of this type allows for a technically correct repair of the timing system while maintaining the factory operating characteristics of the power unit. This is a solution for users who expect solid quality and proper fit for a specific engine configuration.

Specifications and technical data

• SKU: A1120504001
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1120504001
• Substitutable numbers: A1120504001, A 112 050 40 01
• Location on the vehicle: Left
• Fuel type: Petrol
• Category: Camshafts

Camshaft Purpose and Function

The presented camshaft is dedicated to M112 gasoline units installed in Mercedes C-Class (W203), CLK (A209), and E-Class (W211) models. The element is responsible for precise control of valve opening and closing, which directly affects engine smoothness, performance, and idle stability. The use of the correct, left camshaft in a V6 engine is crucial for maintaining proper synchronization of both cylinder heads and avoiding irregularities in the power unit's operation.

Key Technical Advantages

The original camshaft for the M112 engine ensures:

• correct fit to the left cylinder head of the engine,
• maintenance of factory timing phases,
• stable operation across the entire RPM range,
• compatibility with factory timing components.

Thanks to this, the timing system can operate in conditions close to factory settings, which is important both from the perspective of the power unit's durability and its performance parameters. A correctly selected camshaft reduces the risk of uneven engine operation, power loss, or increased fuel consumption.

Installation and Operational Characteristics

The camshaft is designed for installation on the left side of the engine in a V configuration, which requires adherence to the appropriate service procedure and setting the timing according to the manufacturer's technical documentation. The element works with the lubrication system and other timing components, so when replacing it, it is recommended to check the condition of the chains, tensioners, and guides. Selecting parts consistent with the M112 gasoline engine design helps avoid compatibility issues and speeds up the installation process in a workshop environment.

Professional Application in Mercedes Service

Due to the specific function of the camshaft in a gasoline engine, this component is particularly important for repairs related to timing noise, engine control unit errors, or performance drops. A used original component is a sensible choice for comprehensive servicing of M112 units when maintaining a factory-consistent design is a priority. Camshafts of this type are frequently used by workshops specializing in the Mercedes brand, where parameter repeatability and predictable engine behavior after repair are valued.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as additional camshafts, cooperating rocker arms, or variable valve timing components, check the available parts in the Mercedes Camshafts category.

Additional Technical Support

When diagnosing diesel engines, expert materials on fuel systems can also be helpful. In our guide, you will find practical information on the symptoms and consequences of neglect in the injection system – especially in diesel engines. To expand your service knowledge, read the article on diesel injector failures, their symptoms, and consequences, which will facilitate a comprehensive approach to servicing various types of power units in your workshop.