Gates 90K-38104A Serpentine Belt Drive Component Kit

Accessory Belt Drive Kit for OE-Style Service

Restore the front accessory drive with the Gates Accessory Belt Drive Kit 90K-38104A. This serpentine belt drive component kit brings together the belt, tensioner, and idlers needed to service the accessory belt system in one repair. It is a practical choice for 2001-2005 Pontiac Aztek, 2003-2005 Pontiac Montana, and other listed applications where belt drive wear can affect charging and accessory operation.

Key Features

• Gates Accessory Belt Drive Kit, part number 90K-38104A
• Includes an OE-equivalent serpentine belt, tensioner, idler pulley, and required service components listed by the manufacturer
• Belt dimensions: 86.926 in outside circumference and 20 mm top width
• Belt part number: K060864
• Tensioner assembly part number: 38104
• Idler pulley part numbers: 36347 and 36347
• Cross-reference: Dayco 5060865K3 for the same application

Detailed Description

The Gates 90K-38104A accessory belt drive kit is built for complete serpentine system service rather than a belt-only replacement. Gates notes that replacing the tensioner and pulleys at the same time as the belt helps reduce repeat repairs and supports longer service life across the front-end accessory drive. This kit is listed for applications including Pontiac Aztek, Pontiac Montana, Chevrolet Malibu, Oldsmobile Alero, Oldsmobile Silhouette, Pontiac Grand Am, and Buick Rendezvous in the model years shown below.

For buyers searching for a serpentine belt drive component kit for 2001-2005 Pontiac Aztek or a Gates 90K-38104A replacement for 2003-2005 Pontiac Montana, this kit provides the core wear items used in the accessory drive system. It is also a fitment-based solution for 2002-2003 Pontiac Grand Am and other listed GM vehicles with the specified configuration notes.

What It Helps Address

• Squealing or chirping from a worn serpentine belt
• Belt tracking issues caused by a weak tensioner
• Noise from worn idler pulleys
• Premature belt wear from aging accessory drive components
• Repeat repairs when only the belt is replaced

Installation Notes and Tips

Use the vehicle-specific fitment notes before ordering, since some applications are listed with alternator or design-specific requirements. Confirm belt routing, pulley alignment, and tensioner condition during installation. Gates includes installation instructions and tech tips with this kit to support accurate service on the listed vehicles.

Quality Assurance

Gates positions this kit as an OE-equivalent service solution for the accessory belt drive system. The brand’s complete-kit approach is intended to help restore the belt drive assembly with matched service parts for the listed applications.