Dorman 419-666 Accessory Drive Belt Idler Pulley

Durable Steel Accessory Drive Belt Idler Pulley for Audi and Volkswagen

The Dorman 419-666 accessory drive belt idler pulley is engineered to provide reliable tension and smooth operation for serpentine belt systems. Designed specifically for select Audi and Volkswagen models, this pulley ensures proper belt alignment and reduces wear on your vehicle's accessory drive components.

Key Features of the Dorman 419-666 Idler Pulley

• Constructed from durable steel with a black finish for corrosion resistance
• Outside diameter measures 78 mm with a width of approximately 26.3 mm
• Inside diameter of 17 mm and a material thickness of 2.3 mm
• Single mounting hole for secure installation
• Designed for serpentine belt systems with one bearing (19 mm width)
• Specific fit for Audi and Volkswagen models including A3, A4, Beetle, Golf, Jetta, Passat, and others
• Package includes one idler pulley; mounting hardware not included

Detailed Description of the Dorman 419-666 Idler Pulley

This accessory drive belt idler pulley from Dorman is manufactured with precision steel to maintain strength and durability under continuous engine operation. The black finish helps resist corrosion, extending the service life of the pulley. With an outside diameter of 78 mm and a width of 26.3 mm, it is designed to maintain proper serpentine belt tension and alignment. The single bearing with a 19 mm width ensures smooth rotation, reducing friction and wear on the belt system. This pulley is a specific fit for various Audi and Volkswagen vehicles, including the A3, A4, Beetle, Golf, Jetta, Passat, and more, making it a reliable replacement part for maintaining your vehicle’s accessory drive system.

Common Applications and Issues Addressed

• Restores proper tension and alignment in serpentine belt systems
• Eliminates belt slippage and squealing noises
• Prevents premature wear of belts and other drive components
• Reduces risk of accessory drive system failure
• Replaces worn or damaged idler pulleys in Audi and Volkswagen models

Installation Notes and Tips

• Verify compatibility with your specific Audi or Volkswagen model before installation
• Ensure the serpentine belt is properly routed and tensioned after pulley replacement
• Mounting hardware is not included; reuse existing hardware or obtain appropriate fasteners
• Inspect related components such as tensioners and belts during installation
• Follow manufacturer torque specifications for mounting bolt

Quality Assurance and Warranty Information

Dorman manufactures this idler pulley to meet or exceed OEM standards for fit, form, and function. The steel construction and precision bearing contribute to long-lasting performance. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Consult product documentation or Dorman directly for exact warranty terms.