Gates 90K-38397B Serpentine Belt Drive Component Kit

Accessory Belt Drive Kit for OE-Style Service

The Gates 90K-38397B Accessory Belt Drive Kit is built to restore the serpentine drive system with matched components for the belt, tensioner, and idler pulley. It is a direct-fit service solution for vehicles such as the Cadillac XTS, Buick Enclave, Chevrolet Traverse, and GMC Acadia.

Gates Accessory Belt Drive Kit products are organized as complete service kits for front-end accessory drive maintenance, helping technicians replace wear items together instead of servicing only the belt.

• OE-equivalent serpentine belt, tensioner, and idler pulley in one service kit
• Belt part number K060938 with 94.47 in. outside circumference and 20 mm top width
• Tensioner assembly part number 38397 and idler pulley part number 36110
• Built for accessory belt drive system restoration on select GM and Saab applications
• Supports accurate repair planning for vehicles with confirmed fitment

Detailed Product Overview

This Gates serpentine belt drive component kit is intended for complete front accessory drive service rather than a belt-only replacement. Replacing the tensioner and idler pulley at the same time as the belt helps address wear across the full drive path, which is important on higher-mileage vehicles where pulley drag, tension loss, or belt noise can affect operation. The Gates 90K-38397B is listed for 2007-2012 GMC Acadia, 2008-2012 Buick Enclave, 2009-2012 Chevrolet Traverse, 2007-2010 Saturn Outlook, 2010 Cadillac SRX, 2013-2018 Cadillac XTS, and 2011 Saab 9-4X.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Can Help Address

• Squealing or chirping from a worn serpentine belt
• Belt tracking issues caused by a failing idler pulley
• Loss of proper belt tension from a worn tensioner assembly
• Repeated belt service when related front-drive components are not replaced together
• Accessory drive noise on Cadillac XTS, Buick Enclave, Chevrolet Traverse, and GMC Acadia applications

Installation Notes and Tips

Verify the belt routing and component numbers before installation. This kit includes the belt, tensioner, and idler pulley specified for the application, and the manufacturer supplies installation instructions and tech tips to support accurate service. Confirm vehicle year, make, model, and any listed notes such as the 2014-2018 Cadillac XTS with M7V transmission before ordering.

Quality Assurance

Gates positions this kit as an OE-equivalent service solution for restoring the serpentine drive system. The matched-component approach is intended to support a first-time repair on confirmed applications and reduce the need to revisit the same front-end accessory drive service.