Hayden 5931 Accessory Drive Belt Idler Pulley

Hayden 5931 Accessory Drive Belt Idler Pulley

The Hayden 5931 accessory drive belt idler pulley is a steel replacement pulley built for the accessory drive belt system. It features a black finish, a 3-groove design, and a 2.65-inch outside diameter for applications that require a back idler pulley.

Compatible with 2001-2009 Toyota Prius applications, this Hayden pulley is an OE-style replacement that meets or exceeds OEM requirements. The Hayden Pulley line focuses on direct-fit belt drive components for service work where pulley alignment, belt tracking, and consistent rotation matter.

• Steel construction with black finish
• 3-groove idler pulley design
• 2.65-inch outside diameter
• 0.472-inch inside diameter / bore diameter
• 0.62-inch pulley width
• Back idler belt type
• Meets or exceeds OEM specifications

Detailed Product Overview

Hayden 5931 is an accessory drive belt idler pulley designed for the Toyota Prius accessory drive belt system. The pulley uses a steel body for durability and a 3-groove profile to match the belt routing requirements of the application. With a 14.288 mm belt width and 67.31 mm outside diameter, it is built to support proper belt contact and stable operation in the drive system. This part cross-references Gates 36304 for the same application.

For buyers searching for a 2001-2009 Toyota Prius idler pulley, Hayden 5931 provides a direct replacement option for service and repair. It is also referenced under part number 5931 for catalog and interchange lookup.

Common Problems This Part Addresses

• Worn or noisy idler pulley bearings
• Belt tracking issues in the accessory drive system
• Visible pulley wear or surface damage
• Improper belt routing caused by a damaged pulley
• Accessory drive belt noise during engine operation

Installation Notes and Tips

Verify pulley diameter, groove count, and bore size before installation. Mounting hardware is not included, so reuse or source the correct hardware for the vehicle as needed. Confirm belt alignment and inspect the accessory drive belt for wear before returning the vehicle to service. For Toyota Prius repairs, match the pulley to the existing belt path and mounting location before installation.

Quality Assurance

This Hayden pulley is listed as meeting or exceeding OEM specifications for the stated application. It is built as a direct replacement accessory drive belt idler pulley for service use on 2001-2009 Toyota Prius models. Part number 5931 is also used in interchange references for catalog matching.