Mercedes W205 W213 Engine Belt Drive Tensioner Pulley M264 Petrol A2642000070

Mercedes W205 W213 Serpentine Belt Tensioner Pulley is a component from the Tensioners and Pulleys group, designed for the accessory drive system in Mercedes gasoline engines. It is responsible for stable serpentine belt guidance, proper tension, and vibration reduction, which translates to smoother operation of the engine and its accessories.

Specifications and technical data

• SKU: A2642000070-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2642000070
• Substitutable numbers: A2642000070, A 264 200 00 70
• Fuel type: Petrol
• Category: Tensioners & Pulleys

Application in Gasoline Engines

The presented tensioner with pulley operates within the accessory drive system of gasoline engines, ensuring adequate belt pressure against the pulleys of the alternator, pump, and other components. A correctly selected component from this group limits belt slippage, reduces noise, and stabilizes the operation of the entire auxiliary drive, which is important for both accessory durability and driving comfort.

Technical and Functional Characteristics

The tensioner with pulley has been designed to the specifications of Mercedes W205 and W213 models, ensuring correct serpentine belt geometry and compatibility with the factory mounting system. The design intended for gasoline units provides appropriate rigidity, while simultaneously offering controlled flexibility needed to compensate for changes in load and temperature within the engine compartment.

This component belongs to the group of parts responsible for belt guidance and tensioning, therefore its condition directly impacts belt lifespan, engine running smoothness, and the risk of emergency slippage or breakage of the accessory drive. Replacing a worn tensioner with a functional unit is recommended when symptoms such as belt squealing, unstable tension, or visible play in the pulley are observed.

Condition and Benefits of Using a Used Part

The offered serpentine belt tensioner pulley is a used part, allowing for an economical repair of the accessory drive system while maintaining compliance with Mercedes factory specifications. For many users, this represents a sensible compromise between cost and functionality, especially for vehicles used intensively or with higher mileage.

Using an original component from disassembly reduces the risk of installation problems typical of aftermarket parts with imprecise dimensions. This solution allows for restoring correct belt tension and stable accessory operation without the need for intervention in other system components.

Selection and Integration with the Accessory Drive System

When selecting a tensioner for a Mercedes W205 or W213, matching it to the specific gasoline engine version and accessory configuration is crucial. The offered component belongs to the same structural group as factory-installed tensioners and pulleys, allowing it to be integrated into the existing system without modifications to mountings or belt routing.

Tensioner replacement is particularly recommended for any major intervention in the serpentine belt drive, such as replacing the belt or accessory components. This helps to minimize the risk of re-disassembly in a short period and ensures a consistent level of wear across all cooperating components.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as additional tensioners, idler pulleys, or belt guides, check the available parts in the Mercedes Tensioners and Pulleys category.

Technical Support and Driver Knowledge

When experiencing issues with the accessory drive, such as flashing warning lights, voltage drops, or unstable charging system operation, it is worth paying attention not only to the belt and tensioner but also to the alternator itself. Practical tips on assessing component condition and deciding on the use of a used part can be found in the article When is it Worth Replacing an Alternator with a Used One: A Practical Guide for Drivers, which will help you better plan maintenance work on your car.