Gates 38340 Accessory Drive Belt Tensioner Assembly

OE Automatic Belt Tensioner for Nissan and Infiniti

Gates DriveAlign Premium OE Automatic Belt Tensioner 38340 is built for accessory drive belt systems that need consistent belt control and OE-style fit. It is a steel tensioner assembly with a smooth/backside pulley and OE Exact comparison rating for direct replacement service on select Nissan and INFINITI applications.

Key Features

• DriveAlign Premium OE Automatic Belt Tensioner line from Gates
• Steel construction for durable accessory drive belt system service
• OE Exact comparison rating for OE-style fit, form, and function
• Single smooth/backside pulley for V-ribbed belt routing
• 3 mounting holes for application-specific installation
• Pulley dimensions: 4.04 in. outside diameter, 1.36 in. width
• Bearing bore inside diameter: 0.67 in. (17 mm)

Product Details

Gates 38340 is part of the DriveAlign Premium OE Automatic Belt Tensioner line, which focuses on OE-quality replacement components for accessory drive belt systems. Gates applies original equipment system design experience to produce tensioners manufactured to rigid tolerances and specifications, helping maintain proper belt tension and pulley alignment in the engine accessory drive.

This part cross-references Dayco 89379 and Litens 999710A for the same application. It is a direct replacement choice for drivers searching for a Nissan Armada belt tensioner, Nissan TITAN automatic belt tensioner, or INFINITI QX56 accessory drive belt tensioner.

Common Symptoms This Part Can Address

• Belt squeal from inconsistent tension
• Visible belt flutter or vibration
• Accessory drive belt tracking issues
• Noise from a worn tensioner pulley or bearing
• Reduced belt control in the serpentine drive system

Installation Notes and Tips

• Verify belt routing before removing the old tensioner.
• Inspect the V-ribbed belt, idler pulleys, and adjacent accessories during service.
• Confirm mounting hole alignment and pulley clearance before final tightening.
• Check the belt path after installation to ensure smooth operation.

Quality Assurance

Gates manufactures this tensioner to OE-level specifications with controlled tolerances for fit, form, and function. Compatible With 2005-2015 Nissan Armada, 2004-2015 Nissan TITAN, 2008-2012 Nissan Pathfinder, 2004-2010 INFINITI QX56, and 2004 Nissan Pathfinder Armada. Fits 2005-2015 Nissan Armada, 2004-2015 Nissan TITAN, and 2008-2012 Nissan Pathfinder in the listed applications.