Gates 39384 Accessory Drive Belt Tensioner Assembly

OE Automatic Belt Tensioner for Nissan and INFINITI

The Gates DriveAlign Premium OE Automatic Belt Tensioner, part number 39384, is built for accessory drive systems that need stable belt tension and OE-style fit. It is a direct replacement for select Nissan Pathfinder, Murano, Maxima, Altima, Quest, and INFINITI QX60 and JX35 applications.

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 Performance comparison rating for the accessory drive belt system.

Key Features

• Part number 39384 for select Nissan and INFINITI accessory drive belt systems
• Thermoplastic tensioner assembly with OE-style construction
• Single pulley design with smooth/backside contact surface
• V-ribbed belt application
• 2 mounting holes for direct-fit installation
• OE Performance comparison rating
• Pulley dimensions: 2.76 in. outside diameter, 1.02 in. width, 17 mm bearing bore inside diameter

Detailed Description

This Gates DriveAlign Premium OE Automatic Belt Tensioner is engineered for accessory drive belt system service where consistent belt loading matters. It is a strong match for drivers searching for a Nissan Pathfinder belt tensioner replacement, a Nissan Murano automatic belt tensioner, or an INFINITI QX60 accessory drive belt tensioner with OE-style dimensions and mounting layout. The assembly uses a thermoplastic body, a single smooth pulley, and a V-ribbed belt interface to support proper belt tracking in the accessory drive system.

Cross-reference part numbers include Continental 49816 and Dayco 89722 for the same application. Part number 39384 also aligns with OE references used on select Nissan and INFINITI vehicles.

Vehicle Fitment

• Fits 2022-2025 Nissan Pathfinder, N/A
• Fits 2013-2020 Nissan Pathfinder, N/A
• Fits 2022-2024 INFINITI QX60, N/A
• Fits 2014-2020 INFINITI QX60, N/A
• Fits 2015-2024 Nissan Murano, N/A
• Fits 2016-2023 Nissan Maxima, N/A
• Fits 2013-2018 Nissan Altima, N/A
• Fits 2013-2017 Nissan Quest, N/A
• Fits 2013 INFINITI JX35, N/A

What It Helps Address

• Accessory belt noise caused by weak or inconsistent tension
• Belt flutter or belt tracking issues in the drive system
• Visible wear on the belt tensioner pulley or bearing
• Loss of proper belt tension after long-term service
• Drive belt system service on Nissan Pathfinder, Murano, Maxima, Altima, Quest, and INFINITI QX60 applications

Installation Notes and Tips

Verify the belt routing and compare the original tensioner to the replacement before installation. Confirm pulley diameter, mounting hole layout, and belt type match the vehicle application. Inspect the accessory drive belt, idlers, and related pulleys during service so the new tensioner is installed into a clean, properly aligned belt path.

Quality Assurance

Gates manufactures DriveAlign Premium OE Automatic Belt Tensioners to rigid tolerances and specifications for OE fit, form, and function. The 39384 tensioner is built to support the same application requirements expected in OE-style accessory drive belt service.