Engine Belt Mercedes C118 W177 W247 Tensioner Pulley A2822000170

Engine Belt Mercedes C118 W177 W247 Tensioner Pulley is an original accessory drive system component designed for Mercedes models in the C118, W177, and W247 series. The precise design of the tensioner ensures stable guidance of the accessory belt, which translates into smooth operation of the engine accessories and a reduction in unwanted vibrations.

Specifications and technical data

• SKU: A2822000170
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2822000170
• Substitutable numbers: A2822000170, A 282 200 01 70
• Category: Engine Mounts

Purpose and function in the drive system

The accessory belt tensioner in these models is responsible for maintaining the proper tension of the belt that drives key engine accessory components. Stable tension reduces slippage, noise, and uneven loads, which promotes a longer service life for the belt and associated components.

In Mercedes C118, W177, and W247 series vehicles, a properly functioning tensioner is essential for driving comfort, engine refinement, and the service predictability of the entire system.

Construction and technical characteristics

The presented accessory belt tensioner is an element from the Engine mounts group, which in practice means it works with the assembly responsible for reducing vibrations transmitted from the engine to the chassis. The tensioner's design is engineered for:

• stable belt guidance across various engine load ranges,
• damping torsional vibrations and shocks resulting from RPM changes,
• maintaining belt operating geometry over a long service life.

Thanks to this solution, the accessory drive system maintains predictable operating parameters, and the risk of unplanned service downtime is minimized.

Benefits of using an original tensioner

Using an original accessory belt tensioner in C118, W177, and W247 models allows for maintaining the manufacturer's factory design specifications. Key advantages include:

• precise fit to the mounting and belt routing system of the specific body type,
• consistency with the operating characteristics of the engine and accessories,
• reduced risk of incorrect belt tension after installation,
• maintenance of predictable vibration and noise levels in the engine compartment.

For the user, this means more stable operation of the drive system and less load on other cooperating components.

Component condition and service application

The accessory belt tensioner offered in this configuration is an aftermarket component, which allows for economical replacement while maintaining the original manufacturer's specifications. This type of component is particularly useful for:

• planned accessory belt replacement after reaching the service mileage,
• eliminating noise and vibrations originating from the engine accessory area,
• comprehensive maintenance of the accessory drive system in Mercedes C118, W177, and W247 series vehicles.

Selecting a tensioner consistent with the factory design reduces the need for installation modifications and facilitates service work.

Expanding engine area maintenance and related components

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other items from the same group, such as additional mounts, brackets, or vibration damping elements, check out the available parts in the Mercedes Engine mounts category.

If you are planning broader modifications to the engine or improving its operating characteristics, it is worth checking out the guide on using aftermarket components – you will find practical tips in the article How to increase engine power: a practical guide to engine tuning with used parts.

If you are interested in a broader context of selecting original aftermarket components for popular models, the guide to used components may also be helpful: The best used car parts – a guide to the most frequently chosen original parts.