Pulley Mercedes Petrol W169 W245 M266 Crankshaft Pulley Belt Drive A2660320004

Pulley Mercedes Petrol W169 W245 M266 Crankshaft Pulley Belt Drive is an original component from the Pulleys group, designed for gasoline-powered engines. Thanks to its factory specification, it ensures proper routing of the accessory belt and stable operation of the crankshaft, which translates into smooth, predictable performance of the M266 engine.

Specifications and technical data

• SKU: A2660320004
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2660320004
• Substitutable numbers: A2660320004, A 266 032 00 04
• Fuel type: Petrol
• Category: Pulleys

Purpose and technical function

The presented crankshaft pulley has been designed specifically for Mercedes W169 and Mercedes W245 models with the M266 gasoline engine. The component is responsible for transferring drive from the crankshaft to the engine accessories via the belt, maintaining the correct gear ratio and system geometry. A properly selected pulley reduces torsional vibrations, supports the engine's refinement, and decreases the load on other auxiliary drive components.

Benefits of using an original pulley

Using an original pulley in the M266 gasoline engine allows you to maintain the parameters specified by the vehicle manufacturer. Key advantages include:

• stable accessory belt routing across the entire RPM range,
• proper fitment to the crankshaft profile and other system components,
• preservation of the engine's factory operating characteristics,
• reduced risk of belt slippage and improper charging, cooling, or lubrication.

The used OEM component is a solution that allows you to combine technical installation accuracy with reasonable service costs, especially for vehicles that are used intensively or have higher mileage.

Condition, fitment, and installation

The pulley comes from disassembly and is offered as a used part, which enables an economical repair of the accessory drive system in compact-class Mercedes vehicles. Thanks to its factory origin, the correct dimensions, operating angle, and groove geometry for the belt are preserved, which facilitates installation and eliminates the need for additional modifications. Replacing the pulley is recommended in situations where there are noises from the belt area, visible wear on the tracks, or problems with proper belt tension in the gasoline engine.

Application in service and tuning

The component is suitable for both standard maintenance and modifications of the M266 unit, where it is important to maintain proper accessory operation under changed loads. Choosing a used OEM component is often preferred by workshops specializing in the Mercedes brand, as it allows for maintaining the original characteristics of the drive system while reducing costs. If you are interested in a broader context of using used components in vehicle modifications, it is worth reading the article The best used parts for tuning your car, which discusses a practical approach to tuning using proven components.

Expanding the scope of repairs – Mercedes Pulleys

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 drive pulleys, belt guide elements, or cooperating rollers, check out the available parts in the Mercedes Pulleys category.

To better understand how the quick availability of used OEM components affects vehicle downtime in the service center, you can also use the advice contained in the material Availability of car parts off-the-shelf vs. repair time – how used OEM parts shorten workshop stays?, which describes the practical aspects of organizing repairs using parts from disassembly.