Gates 39409 Accessory Drive Belt Tensioner Assembly

OE Automatic Belt Tensioner for Porsche Cayenne

The Gates DriveAlign Premium OE Automatic Belt Tensioner, part number 39409, is built for accessory drive belt systems that require stable belt control and OE-style fit. It is a direct replacement option for select Porsche Cayenne applications, including 2011-2014 and 2016 models.

Gates applies OE system design experience to this DriveAlign Premium OE Automatic Belt Tensioner line, with manufacturing held to tight tolerances for fit, form, and function. The result is a thermoplastic tensioner assembly with a smooth/backside pulley and OE Exact comparison rating for applications that call for precise belt tracking.

Key Features

• Part number 39409 for select Porsche Cayenne accessory drive belt systems
• DriveAlign Premium OE Automatic Belt Tensioner line from Gates
• Thermoplastic tensioner body for OE-style construction
• Single smooth/backside pulley with no flange
• V-ribbed belt application
• OE Exact comparison rating for direct-fit replacement use
• Three mounting holes for proper installation alignment
• Pulley dimensions: 2.56 in. outside diameter, 29.5 mm width, 17 mm bearing bore inside diameter

Product Details

This Gates 39409 tensioner assembly is made for the accessory drive belt system on Porsche Cayenne models where automatic belt tension control is required. It uses a smooth/backside pulley profile and is specified for V-ribbed belt routing, helping maintain consistent belt contact across the drive system. Gates manufactures this DriveAlign Premium OE Automatic Belt Tensioner to rigid specifications so it matches OE fit and function for the listed applications.

This part cross-references URO 95810236140 for the same application.

What It Helps Address

• Belt slack that can lead to poor accessory drive performance
• Noise from a worn or unstable belt tensioner assembly
• Uneven belt tracking on the accessory drive system
• Loss of proper belt tension on the Porsche Cayenne
• Fitment issues when replacing an OE-style automatic tensioner

Installation Notes and Tips

Verify belt routing and pulley alignment before installation. Confirm the vehicle application by year and engine accessory layout, since this part is listed for 2011-2014 Porsche Cayenne with smooth pulley and 2016 Porsche Cayenne applications. Inspect the belt, idlers, and adjacent accessory drive components during service so the new tensioner operates against a clean, properly aligned system.

Compatible With 2011-2014 Porsche Cayenne and 2016 Porsche Cayenne, accessory drive belt system applications. Part number 39409 should be matched to the vehicle’s belt configuration before installation.

Quality Assurance

Gates is a global OE system designer, and this DriveAlign Premium OE Automatic Belt Tensioner is manufactured to tight tolerances for OE fit, form, and function. The OE Exact comparison rating reflects its focus on direct replacement performance for the listed Porsche Cayenne applications.