Dayco 89519 Accessory Drive Belt Idler Pulley

Accessory Drive Idler Pulley for Ford Super Duty

Dayco 89519 is an accessory drive belt idler pulley built for serpentine belt systems that use an 8-rib belt. It features a steel construction, a single bearing, and an 8-groove design for grooved pulley applications on Ford Super Duty trucks and vans.

Key Features

• Steel pulley construction for accessory drive belt service
• 8-groove design for 8-rib serpentine belt routing
• Single bearing design with 17 mm inner diameter and 14 mm bearing width
• Fits grooved pulley, main drive, and water pump positions listed below
• Cross-references ACDelco 36324 and Motorcraft YS314 for the same application
• Dayco 89519 is listed for Ford F-250 Super Duty, Ford F-350 Super Duty, Ford E-350 Super Duty, Ford E-350 Club Wagon, and Ford Excursion applications

Detailed Description

Dayco 89519 is an accessory drive belt idler pulley engineered for grooved serpentine belt systems. The steel pulley body and single-bearing design support smooth belt tracking in accessory drive layouts that use an 8-rib belt. This part number is listed across multiple Ford applications, including Ford F-250 Super Duty and Ford F-350 Super Duty models with grooved pulley positions, as well as Ford E-350 Super Duty, Ford E-350 Club Wagon, and Ford Excursion fitments. If you are replacing a worn idler pulley on a Ford Super Duty belt drive system, Dayco 89519 provides the correct grooved-pulley format for the listed vehicles.

What It Helps Address

• Squealing or chirping from a worn accessory drive pulley
• Belt tracking issues caused by pulley wear
• Rough pulley rotation from bearing wear
• Accessory drive noise on Ford F-250 Super Duty and Ford F-350 Super Duty applications
• Service replacement for grooved pulley, main drive, or water pump positions listed in the fitment data

Installation Notes and Tips

Verify the pulley position, belt type, and groove count before installation. This Dayco 89519 pulley is specified for serpentine belt systems with an 8-rib belt and grooved pulley applications. Confirm the vehicle’s accessory drive layout and match the listed fitment exactly, especially on Ford Super Duty trucks with dual alternator or single alternator configurations.

Quality Assurance

Dayco is a recognized name in belt drive components, and this pulley is built with steel construction and a single bearing for accessory drive service. The part number 89519 is cross-referenced to other established aftermarket and OE-style numbers for the same application, including ACDelco 36324 and Motorcraft YS314.