SKP SK89051 Accessory Drive Belt Idler Pulley

Accessory Drive Idler Pulley Overview

The SKP SK89051 accessory drive belt idler pulley is built for applications that need stable belt routing and consistent tension. It is a steel pulley with a 6203RS bearing, giving it the structure needed for demanding accessory drive systems on Ford, Chevrolet, GMC, and other listed vehicles.

Compatible With long-tail applications such as Fits 1997-2008 Ford F-150, N/A and Fits 2002-2017 Chevrolet Silverado 2500 HD, N/A, this pulley also serves multiple Ford Super Duty, Econoline, and Mustang fitments. The SK89051 part number appears across a wide range of OE-style replacement applications, including Ford Mustang and Ford F-250 service needs.

• Steel construction for wear resistance in accessory drive service
• 6203RS bearing type for smooth pulley operation
• Designed to maintain proper belt tension and routing
• Fits many belt-driven engine accessory applications across Ford, Chevrolet, GMC, Honda, Lincoln, Mercury, Chrysler, Dodge, Hummer, and Oldsmobile platforms
• Cross-references Dayco 89051 and FEL-PRO 36100 for the same application

Detailed Fitment and Function

This SK89051 idler pulley is used in serpentine belt systems where the pulley helps guide the belt and support accessory drive operation. The listed fitment includes Ford F-150, Ford Mustang, Chevrolet Silverado 3500, GMC Sierra 3500, and other vehicles with grooved, smooth, or accessory drive pulley applications, plus specific notes for 6-rib serpentine belt and no air conditioning configurations. The SK89051 part number is a direct reference point when matching the pulley to the correct engine accessory setup.

Common Problems It Can Address

• Belt noise caused by a worn pulley bearing
• Uneven belt tracking in the accessory drive system
• Loss of proper belt tension from pulley wear
• Visible pulley damage, wobble, or rough rotation
• Accessory drive performance issues related to a failing idler pulley

Installation Notes

Verify pulley diameter, width, bearing type, and belt configuration against the original part before installation. Confirm the vehicle note details, including 6-rib serpentine belt and no air conditioning requirements where listed, to ensure the correct application. Use the fitment table to match the exact year, make, model, and pulley position before replacing the existing unit.

Quality Assurance

SKP supplies replacement parts for accessory drive service with durable materials selected for wear resistance and dependable operation. The steel pulley construction and sealed bearing design support consistent performance in demanding belt-driven systems.