Camshaft Mercedes W169 W245 Petrol M266.940 Engine Cam Timing A2660500101

Camshaft Mercedes W169 W245 Petrol M266.940 Engine Cam Timing is a precision timing system component designed for petrol engines, ensuring proper control of cylinder filling phases. Thanks to the factory cam geometry and perfect fit for the M266.940 unit, this intake camshaft helps maintain stable engine operation, smooth running, and predictable throttle response. This is a solution for users who expect a proven component built to the manufacturer's standards.

Specifications and technical data

• SKU: A2660500101
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2660500101
• Substitutable numbers: A2660500101, A 266 050 01 01
• Fuel type: Petrol
• Category: Camshafts

Technical characteristics of the intake camshaft

The presented camshaft belongs to the Camshafts category and is designed for use with petrol engines in Mercedes compact class models, specifically the W169 and W245 series with the M266.940 unit. The cam profile has been designed for the correct opening of intake valves, which translates into:

• proper cylinder filling with the fuel-air mixture,
• stable idle operation,
• correct dynamics across the full rev range,
• maintenance of factory combustion parameters in the petrol engine.

By maintaining the original geometry and compatibility with stock equipment, the intake camshaft allows for timing system service without interfering with the cylinder head construction or changing factory engine control unit settings.

Application in the M266.940 petrol engine

The intake camshaft in the M266.940 unit is responsible for precise control of valve opening on the intake side. In practice, this means that it:

• coordinates the flow of the mixture into the combustion chambers depending on load and engine speed,
• supports the maintenance of proper engine flexibility in both city and highway driving,
• reduces the risk of power loss resulting from improper timing phase control,
• helps maintain the unit's compliance with factory control maps.

A properly selected intake camshaft is particularly important in petrol engines, where the accuracy of timing phases affects running smoothness, fuel consumption, and the level of vibrations transmitted to the body.

Benefits of using an original Mercedes camshaft

Using a component designed specifically for a given power unit brings a number of practical benefits. In the case of this intake camshaft, one can point to, among others:

• compatibility with the cylinder head and equipment – no need for alterations, adjustments, or modifications of cooperating elements,
• preservation of factory engine operating parameters,
• consistency with the lubrication system and camshaft guidance in the cylinder head,
• suitability for standard timing system service procedures.

The product comes from the Mercedes brand, which for many users means predictable performance and a perfect fit for the design solutions used in that generation of petrol engines.

Component condition and assembly aspects

The intake camshaft is offered in used condition, which allows for an economical repair of the timing system while maintaining a component with factory specifications. Before installation, it is recommended to perform a standard verification of the cam working surfaces, bearing journals, and cooperating tappets, in accordance with the service procedures for the given power unit.

During replacement, it is worth paying attention to:

• correct alignment of timing marks and locking tools,
• checking the condition of the timing chain or belt and tensioning elements,
• using the correct tightening torques for camshaft bearings,
• using the proper engine oil to ensure lubrication of cams and journals.

Timing in service practice and additional knowledge

The timing system in modern petrol units requires regular inspection, and symptoms such as noise from the timing area, uneven operation, or power loss may indicate the need for intervention. To expand your knowledge about typical timing problems and service practice, it is worth reading material describing operation and repairs in other designs, e.g., the article BMW N47 timing chain – typical failure and repair using original BMW parts, which discusses symptoms of wear and the approach to replacing timing 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 camshafts, cooperating elements, or phase control components, check the available parts in the Mercedes Camshafts category.