Gates 39405 Accessory Drive Belt Tensioner Assembly

Reliable Belt Tensioner for Land Rover Vehicles

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39405 is engineered to maintain optimal tension on the accessory drive belt system. Designed specifically for Land Rover Discovery Sport, LR2, and Range Rover Evoque models, this tensioner ensures consistent belt performance and longevity.

• Constructed from durable thermoplastic material for strength and heat resistance
• Features a single flanged pulley with a 2.36 inch (60 mm) outside diameter
• Includes a V-ribbed grooved contact surface with 6 grooves for secure belt engagement
• Hydraulic damper integrated for smooth tension adjustment and reduced vibration
• Two mounting holes for secure installation
• Compatible with V-ribbed belt types commonly used in Land Rover accessory drive systems
• OE exact fit and performance, matching original equipment specifications

About the DriveAlign Premium OE Automatic Belt Tensioner Line

The DriveAlign Premium OE Automatic Belt Tensioner line by Gates is designed to meet original equipment standards for automatic belt tensioning systems. This product line focuses on precise fitment and reliable operation, incorporating hydraulic dampers and durable materials to reduce belt noise and wear. The 39405 tensioner assembly is part of this line, providing a direct replacement solution for Land Rover vehicles requiring exact OE specifications.

Product Details and Specifications

This accessory drive belt tensioner assembly features a thermoplastic construction that withstands engine bay temperatures and mechanical stress. The pulley has a 1.1 inch (28 mm) width and a 0.67 inch (17 mm) bearing bore inside diameter, ensuring smooth rotation and alignment. The flanged pulley design helps maintain belt tracking on the 6-groove V-ribbed belt, which is standard for the specified Land Rover models. The hydraulic damper included in the assembly helps absorb shocks and vibrations, contributing to quieter and more consistent belt operation.

Common Applications and Problem Solving

• Maintains proper tension on accessory drive belts to prevent slipping or squealing
• Reduces premature belt wear caused by improper tension or misalignment
• Minimizes noise and vibration in the belt drive system
• Replaces worn or damaged tensioners in Land Rover Discovery Sport, LR2, and Range Rover Evoque
• Restores original equipment performance and reliability

Installation Notes and Tips

When installing the Gates DriveAlign Premium OE Automatic Belt Tensioner 39405, ensure the mounting surface is clean and free of debris. Use the two mounting holes to secure the tensioner firmly in place. Verify that the V-ribbed belt is properly seated in all six grooves of the pulley. It is recommended to inspect the belt condition during installation and replace if signs of wear are present. Proper alignment and tension adjustment are critical for optimal performance and belt longevity.

Quality Assurance and Warranty

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39405 is manufactured to meet or exceed original equipment standards. Gates provides quality assurance through rigorous testing and material selection to ensure durability and reliable operation. This part carries an OE comparison rating, confirming it as an exact replacement for the original tensioner used in Land Rover Discovery Sport, LR2, and Range Rover Evoque models.