Audi RS Q3 8U Alternator Idler Pulley Holder Bracket 2.5 TFSI Petrol 07K145172B

Audi RS Q3 8U Alternator Idler Pulley Holder Bracket 2.5 TFSI Petrol is an original component from the Tensioners and pulleys group, designed for the accessory drive system in the 2.5 TFSI petrol engine. The precise geometry of the bracket ensures stable guidance of the alternator belt and proper positioning of the pulley relative to other components.

Specifications and technical data

• SKU: 07K145172B
• Mark: Audi
• Condition: Used
• OEM Part Number: 07K145172B
• Substitutable numbers: 07K145172B, 07K 145 172 B
• Fuel type: Petrol
• Part type: Timing Belt Pulley
• Category: Tensioners & Pulleys

Purpose and function in the accessory drive system

The presented bracket is a structural element responsible for the rigid mounting of the alternator belt pulley in the 2.5 TFSI unit of the Audi RS Q3 8U model. It is responsible for:

• maintaining the pulley axis in the correct position relative to the multi-ribbed belt,
• ensuring stable operation of the tensioner and alternator under variable loads,
• reducing vibrations and unwanted deviations in the belt path. Thanks to its factory design, the bracket works with the accessory drive system designed for the petrol engine, maintaining proper belt tension and correct alternator operation across the entire RPM range.

Construction and fitment for Audi RS Q3 8U

The bracket was designed by Audi as a component dedicated to a specific configuration of the 2.5 TFSI unit. This means:

• preservation of factory mounting points to the engine block and/or accessories,
• compatibility with the original alternator belt pulley and other components from the Tensioners and pulleys group,
• appropriate structural rigidity, adapted to the loads generated by the driven accessories. Such fitment facilitates installation in workshop conditions and allows for the maintenance of operating parameters specified by the vehicle manufacturer.

Condition, service application, and benefits of installation

The item comes from a used vehicle and is offered as a used part, which provides a cost-effective solution while maintaining the original specification. It is particularly useful in situations where:

• mechanical damage to the bracket has occurred (cracks, deformations),
• there are problems with the correct guidance of the alternator belt,
• it is necessary to replace several elements of the Tensioners and pulleys system during a single service operation. Installing an original bracket allows for restoring the correct belt path and stable alternator operation, which is important for the reliability of the vehicle's electrical power supply and the durability of the entire accessory drive.

Audi tensioners and pulleys – expansion and system modernization

If you are planning a comprehensive repair or modernization of the engine area in your Audi and need other elements from the same group, such as idler pulleys, tensioners, or brackets, check the available parts in the Audi tensioners and pulleys category.

Safe purchase of a used alternator idler pulley bracket

When choosing a used bracket for the Tensioners and pulleys system, it is worth paying attention to compatibility with manufacturer markings, engine type, and mounting design. For users and workshops that want to organize the process of selecting parts by OEM and reference numbers, the guide Safe purchase of used car parts online – a step-by-step guide, which describes practical rules for verifying and matching components, will be helpful.