Gates 90K-39221 Serpentine Belt Drive Component Kit

Gates Accessory Belt Drive Kit for Ford and Lincoln

The Gates Accessory Belt Drive Kit 90K-39221 restores the accessory belt drive system with OE-equivalent components for a complete service approach. It is built for 2011-2017 Ford F-150, 2015-2017 Ford Mustang, and 2015-2017 Lincoln Navigator applications that use the listed belt and tensioner combination.

Gates Accessory Belt Drive Kit products are organized to simplify full serpentine system service, helping technicians replace the belt and related drive components together instead of addressing them one at a time. That approach supports consistent belt tracking and proper tension across the front-end accessory drive.

Key Features

• OE-equivalent serpentine belt drive component kit
• Includes belt and tensioner for a complete accessory drive service
• Contains belt part numbers K060547 and K040359SF
• Tensioner assembly part number 39221
• Designed for Ford F-150, Ford Mustang, and Lincoln Navigator applications listed below
• Includes installation instructions and tech tips for accurate service

Detailed Description

Gates 90K-39221 is a serpentine belt drive component kit for vehicles that require a coordinated accessory drive repair. The kit centers on two OE-equivalent belts with outside circumferences of 55.276 inches (1404 mm) and 36.5 inches (927 mm), along with the matching tensioner assembly. Belt top width specifications listed for this kit include .56 inch, .807 inch, 14 mm, and 20 mm values tied to the included belt components.

This part number is a direct service solution for 2011-2017 Ford F-150, 2015-2017 Ford Mustang, and 2015-2017 Lincoln Navigator models. If you are searching for a Ford F-150 serpentine belt drive kit, a Ford Mustang accessory belt drive kit, or a Lincoln Navigator belt tensioner and belt replacement, 90K-39221 matches those applications exactly as listed.

This part cross-references Gates 90K-39221 for the same application.

What It Helps Address

• Belt noise from wear, glazing, or loss of tension
• Accessory drive vibration caused by a worn tensioner
• Uneven belt tracking across front-end accessory components
• Repeat repairs when the belt is replaced without the tensioner
• Drive system wear on Ford F-150, Ford Mustang, and Lincoln Navigator applications

Installation Notes and Tips

• Fits 2011-2017 Ford F-150, N/A
• Fits 2015-2017 Ford Mustang, N/A
• Fits 2015-2017 Lincoln Navigator, N/A
• 3mm zip tie required for installation
• Follow the included installation instructions and tech tips for correct routing and tensioner setup

Quality Assurance

Gates positions this kit as a complete accessory belt drive service solution using OE-equivalent components. The included instructions and tech tips support accurate installation and help restore the serpentine drive system as a matched assembly.