Dayco 89823 Accessory Drive Belt Idler Pulley - Fan, Fan and Water Pump or Grooved Pulley

Accessory Drive Belt Idler Pulley for Serpentine Systems

Dayco 89823 is an accessory drive belt idler pulley built with a steel body and a single bearing for serpentine belt routing. It features 12 grooves and a maximum belt width of 12 rib, making it a direct-fit style service part for vehicles that use a multi-rib accessory drive layout.

Key Features

• Steel pulley construction for accessory drive durability
• 12-groove design for serpentine belt applications
• Single bearing design with 25 mm inner diameter and 17 mm bearing width
• Supports up to 12 rib belt width
• Flat: N configuration
• Dayco part number 89823 for catalog matching and service lookup

Detailed Product Overview

This Dayco accessory drive belt idler pulley is used in serpentine belt systems to maintain belt routing and proper belt contact across the accessory drive. The steel pulley body and integrated bearing are specified for a 12-groove, 12-rib maximum belt setup, which is common in modern engine accessory drives. If you are searching for a Dayco 89823 idler pulley for a serpentine belt system, this part provides the core dimensions needed for accurate replacement selection.

For vehicle-specific searches, Dayco 89823 is the type of pulley buyers often look for when servicing accessory drive belt systems on applications such as Honda Civic and similar serpentine-belt-equipped vehicles. Always verify groove count, bearing dimensions, and belt width against the original component before ordering.

What It Helps Address

• Belt noise from a worn idler pulley bearing
• Improper belt tracking in the accessory drive system
• Visible pulley wear or surface damage
• Accessory belt vibration caused by pulley wear
• Service replacement for a damaged serpentine belt idler pulley

Installation Notes and Tips

Confirm the original pulley’s groove count, bearing inner diameter, bearing width, and belt width before installation. Inspect the serpentine belt, tensioner, and adjacent pulleys at the same time so the new idler pulley is installed into a clean, aligned accessory drive system. Dayco 89823 should be matched to the vehicle’s original belt routing and pulley specification for proper operation.

Quality Assurance

Dayco is a recognized aftermarket brand in belt drive components, and this pulley is built to the listed material and dimensional specifications for service replacement use. Part number 89823 should be verified against the vehicle application and original pulley measurements for correct selection.