Dorman 419-710 Accessory Drive Belt Idler Pulley

Dorman 419-710 Accessory Drive Belt Idler Pulley

Dorman 419-710 is a specific-fit accessory drive belt idler pulley for select BMW models. It is built to match the function and performance of the original pulley, helping restore proper serpentine belt operation on vehicles such as the BMW 128i, 328i, 328i xDrive, X3, 528i, 528i xDrive, and X5.

Key Features

• Specific-fit accessory drive belt idler pulley for select BMW applications
• Black plastic pulley construction with standard-grade design
• Serpentine belt application with 0 grooves
• 80 mm outside diameter, 17 mm inside diameter, and 26 mm width
• Single mounting hole design with included mounting hardware
• One pulley bearing with 38.5 mm bearing width
• Direct replacement for Dorman 419-710 and cross-references AP Exhaust 50006 and Gates 36369

Detailed Description

This Dorman accessory drive belt idler pulley is engineered as a direct replacement for the original pulley on select BMW vehicles. The pulley helps maintain proper belt routing and tensioning across the serpentine drive system, supporting consistent accessory operation. It is a specific-fit part with a plastic body, black finish, and standard-grade construction for applications that require an OE-style replacement. This part cross-references AP Exhaust 50006 and Gates 36369 for the same application.

What It Helps Address

• Noise from a worn or failing idler pulley
• Belt tracking issues on the serpentine drive system
• Visible pulley wear, cracking, or bearing roughness
• Accessory drive instability on BMW 128i, 328i, and X3 applications
• Loss of proper belt support in BMW 528i and X5 accessory drive layouts

Installation Notes and Tips

Verify vehicle fitment by year, make, model, and engine configuration before installation. This pulley uses a single mounting hole and includes mounting hardware. Inspect the serpentine belt, tensioner, and adjacent pulleys during service so the replacement is not affected by other worn components. Confirm the belt path and pulley alignment after installation.

Quality Assurance

Dorman designs this replacement pulley to match the original part’s function and performance on the listed BMW applications. It is intended as a direct-fit service part for restoring normal accessory drive belt operation.