Gates 39129 Accessory Drive Belt Tensioner Assembly

Overview of Gates DriveAlign Premium OE Automatic Belt Tensioner

The Gates DriveAlign Premium OE Automatic Belt Tensioner (Part Number 39129) is engineered for precise tension control in accessory drive belt systems. Designed specifically for select INFINITI and Nissan models, this tensioner assembly ensures consistent belt performance and durability.

• Constructed from durable steel for long-lasting strength
• Features a single flanged pulley with a smooth backside contact surface
• Compatible with V-ribbed belt types
• Outside diameter of 70 mm (2.76 in) and width of 30.5 mm (1.2 in)
• Includes one mounting hole for secure installation
• OE exact fitment for reliable replacement

Detailed Product Description and Specifications

This accessory drive belt tensioner assembly is built with a steel body to withstand the rigors of engine operation. The pulley is flanged to help maintain belt alignment and reduce slippage, with a smooth backside contact surface that minimizes wear on the V-ribbed belt. The bearing bore inside diameter measures 17 mm (0.67 in), supporting smooth rotation and tension consistency. With an outside diameter of 70 mm (2.76 in) and a width of 30.5 mm (1.2 in), this tensioner is designed to match original equipment specifications precisely.

DriveAlign Premium OE Automatic Belt Tensioner Product Line

The DriveAlign Premium OE Automatic Belt Tensioner line by Gates focuses on delivering original equipment quality and fitment. This product line is engineered to meet or exceed OE standards, providing a direct replacement solution for accessory drive belt tensioners. The 39129 tensioner assembly is part of this line, ensuring compatibility and performance for vehicles requiring precise belt tension management.

Compatible Vehicles and Common Applications

This tensioner assembly is compatible with a range of INFINITI and Nissan vehicles, including but not limited to the 350Z, 370Z, EX35, EX37, FX35, FX37, G35, G37, GT-R, M35, M37, M45, Q40, Q50, Q60, Q70, Q70L, QX50, and QX70 models. It is designed specifically for use with V-ribbed accessory drive belts in these vehicles.

• Maintains proper belt tension to prevent slipping and noise
• Reduces premature belt wear and extends belt life
• Prevents accessory drive system failures due to improper tension
• Eliminates issues related to belt misalignment
• Helps avoid engine overheating caused by accessory belt failure

Installation Notes and Tips

When installing the Gates DriveAlign Premium OE Automatic Belt Tensioner 39129, ensure the mounting surface is clean and free of debris. Use the single mounting hole to secure the tensioner firmly in place. Verify that the V-ribbed belt is properly seated on the flanged pulley to maintain alignment. It is recommended to inspect the belt and related components for wear during installation and replace as necessary.

Quality Assurance and Warranty

Gates manufactures this tensioner assembly to meet original equipment standards, ensuring reliable performance and durability. The DriveAlign Premium OE Automatic Belt Tensioner 39129 is rated as an OE exact replacement part. While specific warranty details may vary, Gates typically offers coverage against defects in materials and workmanship to support product reliability.