Dayco 89507 Accessory Drive Belt Idler Pulley

Accessory Drive Belt Idler Pulley for Serpentine Systems

Dayco 89507 is a steel accessory drive belt idler pulley built for serpentine belt routing in select GM applications. It uses a flat pulley design with two bearings and a 10.15 mm bearing inner diameter to support smooth belt tracking in the accessory drive system.

Key Features

• Steel pulley construction for accessory drive durability
• Serpentine belt type application
• Flat pulley profile
• Two-bearing design for rotational support
• Max belt width: 07 rib
• Bearing width: 24 mm
• Bearing inner diameter: 10.15 mm

Detailed Description

This Dayco accessory drive belt idler pulley is designed for vehicles that use a serpentine belt system and a smooth pulley layout. The steel construction and dual-bearing design help maintain belt alignment and consistent pulley rotation in the accessory drive path. Dayco 89507 is a direct-fit style replacement for a range of Cadillac CTS, Chevrolet Camaro, Chevrolet Corvette, Chevrolet Impala, Chevrolet Monte Carlo, Buick Allure, Buick LaCrosse, and Pontiac Grand Prix applications listed below.

This part cross-references ACDelco 36348 for the same application.

Vehicle Fitment

• Fits 2012-2015 Cadillac CTS, Main Drive
• Fits 2013-2015 Chevrolet Camaro, Smooth Pulley
• Fits 2012-2015 Chevrolet Camaro, Main Drive
• Fits 2005-2013 Chevrolet Corvette, N/A
• Fits 2009-2013 Chevrolet Corvette, Alternator
• Fits 2010-2012 Chevrolet Camaro, N/A
• Fits 2009-2011 Cadillac CTS, Main Drive
• Fits 2008-2009 Buick Allure, Upper
• Fits 2008-2009 Buick LaCrosse, Upper
• Fits 2006-2009 Chevrolet Impala, Upper
• Fits 2005-2008 Pontiac Grand Prix, Upper
• Fits 2004-2007 Cadillac CTS, N/A
• Fits 2006-2007 Chevrolet Monte Carlo, Upper

Installation Notes and Tips

Verify pulley style, belt routing, and mounting location before installation. Confirm the serpentine belt width and bearing dimensions against the original part, especially on Cadillac CTS, Chevrolet Camaro, and Chevrolet Corvette applications. Inspect the belt path, adjacent pulleys, and tensioner condition during service to help prevent repeat noise or tracking issues.

Quality Assurance

Dayco manufactures accessory drive components for OE-style service replacement use. Part number 89507 is built to match the listed pulley specifications and fitment coverage for the applications shown.