Hayden 5919 Accessory Drive Belt Idler Pulley - Air Conditioning or Power Steering

Hayden 5919 Idler Pulley Overview

Hayden 5919 is a steel accessory drive belt idler pulley for serpentine belt systems. It is built as a smooth back idler/tensioner pulley with a black finish and a 2.750 in outside diameter for direct replacement service on select Cadillac applications.

Use this Hayden pulley when servicing the accessory drive belt system on Cadillac CTS, Cadillac STS, and Cadillac SRX models with air conditioning or power steering pulley applications.

Key Features

• Steel pulley construction for accessory drive belt service
• Smooth groove design for serpentine belt routing
• Back idler / tensioner pulley style
• 2.750 in outside diameter, 1.18 in pulley width
• 0.671875 in inside diameter with 17 mm bore
• Black finish
• Meets or exceeds OEM requirements
• Mounting hardware included

Detailed Product Description

This Hayden pulley, part number 5919, is an OE-style accessory drive belt idler pulley designed for serpentine belt systems. The steel construction and smooth pulley surface support stable belt tracking in accessory drive applications, while the 69.850 mm outside diameter and 28.575 mm belt width dimensions align with the listed fitment requirements. Hayden Pulley 5919 is a direct replacement option for vehicles using a back idler or tensioner pulley configuration.

Compatible With 2004-2009 Cadillac CTS, Air Conditioning and Power Steering pulley applications; 2005-2011 Cadillac STS, Air Conditioning and Power Steering pulley applications; and 2009 Cadillac SRX, Air Conditioning and Power Steering pulley applications. This part cross-references Gates 36275 for the same application.

Common Issues This Pulley Can Address

• Worn or noisy accessory drive belt pulley
• Belt misalignment in the serpentine drive system
• Rough pulley rotation caused by age or wear
• Accessory belt routing problems at the idler or tensioner position
• Service replacement for a damaged A/C or power steering pulley

Installation Notes and Tips

Verify pulley diameter, bore size, belt width, and mounting location before installation. Inspect the serpentine belt, tensioner, and adjacent pulleys for wear at the same time, since a worn belt system can shorten the service life of the replacement pulley. Confirm the application matches the vehicle’s air conditioning or power steering pulley position listed above.

Quality Assurance

Hayden 5919 is listed as meeting or exceeding OEM requirements for the specified applications. The pulley is built for direct replacement use in the accessory drive belt system and is supported by Hayden’s pulley product line specifications.