Dayco 89107 Accessory Drive Belt Idler Pulley - Fan

Accessory Drive Belt Idler Pulley Overview

The Dayco 89107 accessory drive belt idler pulley is built for serpentine belt routing in the accessory drive system. It uses a steel construction with dual bearings and an 8-groove design to match 8-rib serpentine belt applications.

For drivers searching for a Dayco 89107 idler pulley, this part is a direct-fit style replacement for accessory drive belt service where the pulley must maintain belt alignment and smooth rotation. It is also a relevant search match for Freightliner belt system repairs and other vehicle applications that use an 8-rib serpentine setup.

Key Features

• Brand: Dayco
• Part number: 89107
• Accessory drive belt idler pulley for serpentine belt systems
• Steel pulley construction
• 8-groove design for 8-rib belts
• Dual-bearing design with 17 mm inner diameter bearings
• Bearing width: 24 mm
• Max belt width: 08 rib

Detailed Product Description

Dayco 89107 is an accessory drive belt idler pulley engineered for serpentine belt routing in the front-end accessory drive system. The steel pulley body and two bearings are specified to support consistent belt tracking, while the 8-groove profile matches common 8-rib serpentine belt layouts. With a 39.4 mm bearing inner diameter reference and 24 mm bearing width, this pulley is built around the dimensional requirements listed for the part.

This Dayco 89107 pulley is a practical replacement choice when servicing belt drive components on vehicles such as Freightliner models that use the same application, and it is also a useful search term for Dayco 89107 and accessory drive belt idler pulley buyers comparing OE-style replacement parts.

This part cross-references ACDelco 36097 and Gates 36097 for the same application.

What It Helps Address

• Noise from a worn or rough idler pulley bearing
• Belt misalignment in the serpentine drive system
• Visible pulley wear or bearing play
• Uneven belt tracking across accessory drive components
• Service replacement for a damaged 8-rib idler pulley

Installation Notes and Tips

Verify pulley groove count, belt width, and bearing dimensions before installation. Inspect the serpentine belt, tensioner, and adjacent pulleys at the same time, since wear in one component can affect the rest of the accessory drive belt system. Confirm the pulley sits squarely in the belt path and that the belt tracks cleanly after startup.

Quality Assurance

Dayco manufactures belt drive components for automotive and heavy-duty applications, and this pulley is specified with steel construction and dual bearings for consistent service in serpentine belt systems. Confirm part number 89107 against the vehicle’s accessory drive layout before ordering.