Gates 90K-39359A Serpentine Belt Drive Component Kit

Accessory Belt Drive Kit for Subaru Legacy and Outback

Restore the front accessory drive on compatible Subaru applications with the Gates Accessory Belt Drive Kit 90K-39359A. This serpentine belt drive component kit is built around an OE-equivalent belt and matching tensioner to help service the accessory belt system as a complete unit.

For 2015-2019 Subaru Legacy and 2015-2019 Subaru Outback applications, this kit supports a more complete repair than replacing the belt alone. Gates 90K-39359A is organized for direct service of the serpentine drive on these Subaru models.

Key Features

• Accessory Belt Drive Kit from Gates
• Part number 90K-39359A
• Includes belt and tensioner
• OE-equivalent belt construction
• Built for 2015-2019 Subaru Legacy and 2015-2019 Subaru Outback
• Belt specifications: 78.586 in. outside circumference, 20 mm top width
• Belt part number K060780; tensioner assembly part number 39359

Product Details

Gates 90K-39359A is a serpentine belt drive component kit for Subaru Legacy and Subaru Outback models from 2015 through 2019. The kit centers on the belt and tensioner needed to service the accessory drive system as a matched repair, helping maintain proper belt tracking and tension across the front-end accessory drive. The belt measures 78.586 inches outside circumference and 20 mm in top width, with the belt identified as K060780 and the tensioner assembly identified as 39359. This part cross-references Gates 90K-39359A for the same application.

What It Helps Address

• Squealing or chirping from the serpentine drive
• Loss of belt tension from a worn tensioner
• Uneven belt wear from aging front-end components
• Accessory drive noise on Subaru Legacy and Outback models
• Repeat repairs caused by replacing only the belt

Installation Notes and Tips

Use the included installation instructions and tech tips to verify routing and component placement before installation. Inspect the accessory drive path, pulley surfaces, and tensioner operation during service, and confirm the belt specification matches the application before final assembly. For fitment, this part fits 2015-2019 Subaru Legacy and 2015-2019 Subaru Outback.

Quality Assurance

Gates positions this kit as a complete service solution for the serpentine drive, combining an OE-equivalent belt with the matching tensioner for the listed Subaru applications. The part number 90K-39359A is cataloged for direct replacement use on the specified Legacy and Outback vehicles.