Gates 90K-39390 Serpentine Belt Drive Component Kit

Gates 90K-39390 Serpentine Drive Kit

The Gates 90K-39390 Accessory Belt Drive Kit (Standard) restores the accessory drive system with OE-equivalent components for Mazda applications. It is built for drivers replacing a worn serpentine belt and related front-end drive parts at the same time to help maintain proper belt tracking and accessory operation.

Gates Accessory Belt Drive Kit (Standard) is a complete service solution for the serpentine drive on Mazda 3, Mazda 3 Sport, Mazda CX-5, Mazda 6, and Mazda CX-9 applications. The 90K-39390 kit is organized around the belt drive system, making it easier to service the belt, tensioner, and pulley-related wear points together instead of addressing them one at a time.

Key Features

• OE-equivalent belt included for factory-style replacement
• Includes a tensioner assembly for restoring belt tension control
• Built for accessory belt drive system service on select Mazda models
• Gates part number 90K-39390 for direct catalog lookup
• Cross-reference: Gates 90K-39390

Fitment Coverage

• Fits 2021-2025 Mazda 3, N/A
• Fits 2014-2018 Mazda 3, N/A
• Fits 2021-2025 Mazda 3 Sport, N/A
• Fits 2014-2017 Mazda 3 Sport, N/A
• Fits 2015-2025 Mazda CX-5, N/A
• Fits 2014-2021 Mazda 6, N/A
• Fits 2021 Mazda CX-3, N/A
• Fits 2019-2020 Mazda 3, N/A, W/O SKYACTV
• Fits 2019-2020 Mazda 3 Sport, N/A, W/O SKYACTV
• Fits 2019 Mazda CX-9, N/A

What This Kit Helps Address

• Squealing or chirping from a worn accessory belt
• Loss of proper belt tension from a fatigued tensioner
• Uneven belt wear caused by aging drive components
• Accessory drive noise from worn belt-drive parts
• Repeat repairs when only the belt is replaced

Installation Notes

Use the vehicle-specific fitment data before ordering, especially for 2019-2020 Mazda 3 and Mazda 3 Sport models without SKYACTV. Follow the included installation instructions and tech tips for accurate routing and setup. Verify belt routing, pulley alignment, and tensioner operation during installation on Mazda 3, Mazda CX-5, and Mazda 6 applications.

Quality Assurance

Gates positions this kit as a complete serpentine service package to help restore the accessory belt drive system with OE-equivalent parts. The 90K-39390 kit is intended to support a more complete repair by addressing the belt and tension control components together.