Dayco 89559 Accessory Drive Belt Idler Pulley - Power Steering

Accessory Drive Idler Pulley for Toyota Power Steering

Dayco 89559 is an accessory drive belt idler pulley built for Toyota power steering applications. It uses a steel construction with a single bearing, a 20 mm bearing inner diameter, and 14 mm bearing width for V-belt service.

Compatible With 1985-1995 Toyota 4Runner and Toyota Pickup power steering applications, this pulley is sized for a maximum belt width of 1/2 in. and is a direct-fit service part for the accessory drive belt system.

Key Features

• Steel pulley construction for accessory drive belt service
• Single-bearing design
• Belt type: V-belt
• Bearing inner diameter: 20 mm
• Bearing width: 14 mm
• Maximum belt width: 1/2 in.
• Flat: No

Detailed Description

Dayco 89559 is an accessory drive belt idler pulley used in Toyota power steering belt routing. It is specified for 1985-1995 Toyota Pickup power steering applications and 1987-1995 Toyota 4Runner power steering applications, including 1987 models built from 12/86. The steel pulley and single bearing design support V-belt operation in the accessory drive belt system, where proper alignment and smooth rotation are critical.

This part number, 89559, is a practical replacement choice when servicing Toyota 4Runner and Toyota Pickup power steering belt components. It cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues This Part Can Address

• Noise from a worn or rough idler pulley bearing
• Belt tracking problems in the power steering drive path
• Visible pulley wear or surface damage
• Accessory drive belt vibration caused by pulley drag
• Service replacement for aging Toyota power steering belt hardware

Installation Notes and Tips

Verify belt type, pulley alignment, and bearing dimensions before installation. Confirm the vehicle application by year and power steering position, especially on 1987 Toyota 4Runner and 1987 Toyota Pickup models built from 12/86. Inspect the V-belt for glazing, cracking, or uneven wear before reassembly.

Quality Assurance

Dayco manufactures belt drive components for automotive service applications, and this pulley is built to match the listed Toyota fitment and dimensional requirements.