Gates 38420 Accessory Drive Belt Tensioner Assembly

Overview of Gates DriveAlign Premium OE Automatic Belt Tensioner

The Gates DriveAlign Premium OE Automatic Belt Tensioner (Part Number 38420) is engineered to maintain optimal tension on the accessory drive belt system. Designed for select Buick, Chevrolet, Pontiac, and Saturn models, this tensioner assembly ensures consistent belt performance and longevity.

• Thermoplastic construction for durability and heat resistance
• Single flanged pulley with 6 V-ribbed grooves
• Pulley outside diameter: 74 mm (2.91 in)
• Width: 26 mm (1.02 in)
• Bearing bore inside diameter: 17 mm (0.67 in)
• Compatible with V-ribbed belt types
• Includes one mounting hole for secure installation

Detailed Product Description and Specifications

This accessory drive belt tensioner assembly features a thermoplastic pulley designed to withstand the demanding conditions of engine compartments. The pulley includes six grooves specifically designed for V-ribbed belts, providing reliable grip and smooth operation. With a precise outside diameter of 74 mm and a width of 26 mm, the tensioner fits the accessory drive belt system requirements of various GM vehicles. The bearing bore inside diameter measures 17 mm, ensuring compatibility with the corresponding shaft size. The single flanged pulley design helps maintain belt alignment and reduces the risk of slippage.

The Gates DriveAlign Premium OE Automatic Belt Tensioner is an OE exact replacement, meeting original equipment specifications for fit, form, and function. This ensures proper tensioning and belt tracking for vehicles such as the Buick LaCrosse, Chevrolet Impala, Pontiac G6, and Saturn Vue, among others.

About the DriveAlign Premium OE Automatic Belt Tensioner Line

The DriveAlign Premium OE Automatic Belt Tensioner product line by Gates focuses on delivering precise tension control for accessory drive belt systems. This line is designed to match original equipment standards, providing reliable performance and durability. The automatic tensioner assembly adjusts belt tension dynamically, reducing wear and extending belt life in compatible Buick, Chevrolet, Pontiac, and Saturn models.

Common Applications and Issues Addressed

• Maintains proper tension on V-ribbed accessory drive belts
• Prevents belt slippage and misalignment
• Reduces noise caused by loose or worn belts
• Helps avoid premature belt wear and failure
• Supports smooth operation of engine accessories such as alternators and power steering pumps

Installation Notes and Tips

• Ensure vehicle compatibility with Buick, Chevrolet, Pontiac, and Saturn models listed
• Verify belt type is V-ribbed before installation
• Inspect mounting hole and pulley alignment during installation
• Use proper torque specifications to secure the tensioner assembly
• Check belt condition and replace if worn or damaged

Quality Assurance and Warranty

The Gates DriveAlign Premium OE Automatic Belt Tensioner (Part Number 38420) is manufactured to meet stringent quality standards. It is an OE exact replacement part, ensuring reliable performance and durability. Gates provides a limited warranty covering defects in materials and workmanship, supporting confidence in the product's longevity and function.