Dayco 89571 Accessory Drive Belt Idler Pulley - Smooth Pulley

Dayco 89571 Accessory Drive Belt Idler Pulley

The Dayco 89571 accessory drive belt idler pulley is a steel, flat serpentine pulley built for accessory drive belt system service. It is specified for vehicles with a 6-rib maximum belt width and uses one bearing with a 12 mm inner diameter and 12 mm width for smooth belt routing.

Fits 2005-2019 Nissan Frontier, Smooth Pulley, with air conditioning. This Dayco 89571 pulley is a direct-fit service part for the accessory drive belt system on Nissan Frontier models in the confirmed application range.

Key Features

• Steel pulley construction for accessory drive belt system use
• Flat, smooth pulley design
• Serpentine belt type application
• One bearing design with 12 mm inner diameter and 12 mm width
• Maximum belt width: 6 rib
• Confirmed fitment for 2005-2019 Nissan Frontier with air conditioning

Detailed Description

Dayco 89571 is an accessory drive belt idler pulley engineered for serpentine belt routing in the accessory drive belt system. The steel pulley body and single-bearing design support consistent belt tracking, while the smooth pulley surface is specified for applications that use a flat idler configuration. For Nissan Frontier models equipped with air conditioning, this part number 89571 matches the confirmed smooth pulley fitment across the listed model years.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Noise from a worn or rough idler pulley bearing
• Belt tracking issues caused by pulley wear
• Serpentine belt routing problems in the accessory drive system
• Visible pulley surface wear on the smooth idler
• Service replacement needs on Nissan Frontier accessory drive systems

Installation Notes and Tips

Verify the vehicle uses the smooth pulley configuration and has air conditioning before ordering. Match the belt type, rib count, and bearing dimensions to the original part during service. Inspect the serpentine belt, tensioner, and adjacent pulleys at the same time to confirm the full accessory drive system is in good condition.

Quality Assurance

Dayco is a recognized name in belt drive components, and part number 89571 is built to the listed material and dimensional specifications for the confirmed application.