Gates 39407 Accessory Drive Belt Tensioner Assembly

Overview of Gates DriveAlign Premium OE Automatic Belt Tensioner 39407

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39407 is engineered for precise belt tension control in Jaguar and Land Rover vehicles. Designed specifically for models such as the Defender 90, Defender 110, Discovery, Discovery Sport, E-Pace, F-Pace, F-Type, Range Rover Evoque, Range Rover Velar, XE, and XF, this tensioner assembly ensures reliable accessory drive belt performance.

• Thermoplastic construction for durability and heat resistance
• Dual smooth backside pulleys without flanges for optimal belt contact
• V-ribbed belt compatibility for modern accessory drive systems
• Single mounting hole for secure installation
• Exact OE comparison rating for direct replacement
• Precision bearing bore inside diameter of 17 mm (0.67 in)
• Pulley outside diameter of 65 mm (2.56 in) with a width of 25 mm (0.98 in)

Detailed Product Description

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39407 features a thermoplastic body designed to withstand the thermal and mechanical stresses typical in Jaguar and Land Rover accessory drive systems. It includes two pulleys, both with smooth backside contact surfaces and no flanges, which accommodate V-ribbed belts commonly used in these vehicles. The pulleys have an outside diameter of 65 mm (2.56 inches) and a width of 25 mm (0.98 inches), ensuring proper belt alignment and tension. The bearing bore inside diameter measures 17 mm (0.67 inches), providing precise fitment and smooth rotation. This tensioner assembly is rated as an exact OE replacement, making it suitable for maintaining factory performance and reliability in models such as the Range Rover Velar and Jaguar F-Type.

Compatible Vehicles and Applications

• Jaguar Defender 90 and Defender 110
• Land Rover Discovery and Discovery Sport
• Jaguar E-Pace and F-Pace
• Jaguar F-Type
• Range Rover Evoque and Range Rover Velar
• Jaguar XE and XF

This part is designed to maintain proper tension on the accessory drive belt, which powers critical components like the alternator, power steering pump, and air conditioning compressor.

Common Issues Addressed by This Belt Tensioner

• Eliminates belt slippage caused by worn or loose tensioners
• Prevents premature belt wear and noise
• Maintains consistent belt tension for optimal accessory performance
• Reduces risk of accessory drive system failure
• Improves engine accessory efficiency and longevity

Installation Notes and Tips

Ensure the mounting surface is clean and free of debris before installation. The single mounting hole design simplifies alignment, but verify proper pulley orientation to avoid belt misalignment. Use appropriate tools to avoid damage to the thermoplastic housing or pulleys during installation. Confirm belt type compatibility; this tensioner is designed specifically for V-ribbed belts used in the listed Jaguar and Land Rover models.

Quality Assurance and Warranty

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39407 meets original equipment specifications for fit, form, and function. Manufactured with high-quality thermoplastic materials and precision bearings, it is engineered for durability and consistent performance. This part carries an OE comparison rating, ensuring it matches factory standards. Warranty details should be confirmed with the parts provider or manufacturer.

About the DriveAlign Premium OE Automatic Belt Tensioner Line

The DriveAlign Premium OE Automatic Belt Tensioner product line by Gates focuses on delivering exact OE fitment and reliable tension control for accessory drive belt systems. This line uses advanced materials and design to provide consistent belt tension, reduce noise, and extend belt life. The 39407 tensioner assembly is part of this line, offering a direct replacement solution for Jaguar and Land Rover vehicles requiring precise belt tension management.