Accesory Belt Idler Pulley – 07K 145 172B (Uro)

Description

Product Description

The 07K145172B Accessory Belt Idler Pulley by URO Parts is an OE-style replacement designed for select Volkswagen and Audi applications. This idler pulley guides the serpentine belt and helps maintain proper belt routing and alignment, ensuring that belt-driven accessories—such as the alternator and A/C compressor—operate smoothly and efficiently.

Over time, the internal bearing of the idler pulley can wear out due to constant rotation, high engine temperatures, and road debris. A failing bearing often produces a distinct chirping or grinding noise and can eventually lead to pulley wobble, which causes premature belt wear or even belt failure. Replacing the worn unit with this URO 07K145172B pulley restores factory-level quietness and reliable power transfer to your engine’s accessories.

• OEM reference: 07K 145 172B
• Brand: URO Parts – OE-style European replacement supplier
• High-quality sealed bearing for smooth rotation and long service life
• Precision-molded pulley face ensures correct belt tracking and alignment
• Helps eliminate belt squeal, vibration, and “belt flutter” at idle
• Direct-fit replacement; no modifications required

Applications

Used on select Volkswagen and Audi models that specify accessory belt idler pulley part number 07K145172B. This is commonly found on various 2.5L 5-cylinder and other 4-cylinder engines. (Please confirm compatibility via VIN or parts catalog to ensure this matches your specific belt drive configuration.)

Service Notes

• It is highly recommended to inspect the serpentine belt for cracks or glazing and replace it if necessary when installing a new pulley.
• Check the belt tensioner and other idler pulleys for noise or play to prevent repeat failures.
• Ensure the belt is properly seated in all pulley grooves before starting the vehicle.

Additional information

No fitment data available.