Gates 39425 Accessory Drive Belt Tensioner Assembly

OE Automatic Belt Tensioner for Porsche

The Gates DriveAlign Premium OE Automatic Belt Tensioner, part number 39425, is built for accessory drive belt systems that require precise belt control and stable tension. It is an OE Exact replacement for select Porsche applications, including Porsche 718 Boxster, 718 Cayman, 718 Spyder, 911, Boxster, and Cayman models.

Gates applies OE system design experience to this DriveAlign Premium OE Automatic Belt Tensioner line, with manufacturing held to rigid tolerances for fit, form, and function. The result is a direct-fit tensioner assembly for V-ribbed belt systems where consistent belt tracking and tension are critical.

Key Features

• Part number 39425
• Accessory drive belt tensioner assembly for V-ribbed belt systems
• OE Exact comparison rating for direct replacement use
• 2 mounting holes for application-specific installation
• Contents: tensioner assembly
• Gates DriveAlign Premium OE Automatic Belt Tensioner line

Detailed Product Overview

This Gates 39425 tensioner is engineered for Porsche accessory drive belt systems that use an automatic tensioning design. It supports proper belt engagement on the accessory drive path and is listed for multiple Porsche 718 and 911 platform applications, along with Boxster and Cayman models across the 2009-2024 model years. If you are replacing a worn Porsche 911 belt tensioner or sourcing a Porsche 718 Cayman automatic belt tensioner, this OE Exact assembly provides the specified fitment profile.

This part cross-references Four Seasons 39425 for the same application.

What It Helps Address

• Belt squeal caused by weak or inconsistent tension
• Accessory belt flutter or poor belt tracking
• Noise from a worn automatic belt tensioner assembly
• Reduced belt control in V-ribbed drive systems
• Fitment issues when replacing an OE-style Porsche belt tensioner

Installation Notes and Tips

• Verify the vehicle’s engine configuration and belt routing before installation.
• Confirm whether the application notes include hydraulic tensioner or bracket exclusions for your Porsche model year.
• Inspect the accessory drive belt, pulleys, and related components for wear before installing the new tensioner.
• Use the listed fitment notes to match the correct Porsche 718 Boxster, 718 Cayman, 718 Spyder, 911, Boxster, or Cayman application.

Quality Assurance

Gates manufactures this DriveAlign Premium OE Automatic Belt Tensioner to rigid OE specifications and tolerances, with an OE Exact comparison rating for application matching. Part number 39425 is built to deliver OE fit, form, and function for the listed Porsche applications.