Gates 39159 Accessory Drive Belt Tensioner Assembly - Fan or Serpentine

Overview of Gates DriveAlign Premium OE Automatic Belt Tensioner

The Gates DriveAlign Premium OE Automatic Belt Tensioner (Part Number 39159) is engineered to maintain optimal tension on the accessory drive belt system. Designed specifically for Chevrolet and GMC heavy-duty trucks and vans, this tensioner assembly ensures consistent belt performance and longevity.

• Material: Durable thermoplastic construction
• Single flanged pulley with 6 V-ribbed grooves
• Pulley outside diameter: 70 mm (2.76 in)
• Width: 25.5 mm (1 in)
• Bearing bore inside diameter: 17 mm (0.67 in)
• Compatible with V-ribbed belt types
• Includes one mounting hole for secure installation

Product Line Details: DriveAlign Premium OE Automatic Belt Tensioner

The DriveAlign Premium OE Automatic Belt Tensioner line by Gates focuses on delivering original equipment (OE) exact fit and function. This product line is designed to meet or exceed factory specifications, providing reliable belt tension control for accessory drive systems. The 39159 tensioner assembly is part of this line, ensuring compatibility and performance for Chevrolet Express, GMC Savana, and Silverado models requiring precise belt tension management.

Detailed Product Description

This accessory drive belt tensioner assembly features a thermoplastic pulley with a flanged design to guide the V-ribbed belt accurately. The pulley has six grooves, matching the belt profile for consistent contact and reduced slippage. With a 70 mm outside diameter and 25.5 mm width, the tensioner fits the specified Chevrolet and GMC heavy-duty vehicles, including Express 2500/3500, Savana 2500/3500, Sierra 2500 HD/3500 HD, and Silverado 2500 HD/3500 HD models. The bearing bore inside diameter of 17 mm (0.67 in) supports smooth rotation and durability under demanding operating conditions.

Common Applications and Problem Solving

• Maintains proper tension on V-ribbed accessory drive belts
• Prevents belt slippage and premature wear
• Reduces noise caused by loose or misaligned belts
• Supports accessory components like alternators, power steering pumps, and air conditioning compressors
• Replaces worn or damaged OE belt tensioners in Chevrolet and GMC heavy-duty trucks and vans

Installation Notes and Tips

• Ensure vehicle compatibility with Chevrolet Express, GMC Savana, Sierra, and Silverado 2500/3500 HD models
• Inspect belt condition and alignment before installing the tensioner
• Use proper tools to avoid damage to the thermoplastic pulley and bearing
• Follow manufacturer torque specifications for mounting bolt
• Verify belt tension after installation to confirm proper operation

Quality Assurance and Warranty

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39159 is manufactured to meet OE standards for fit, form, and function. Constructed with high-quality thermoplastic and precision bearings, it offers reliable performance in demanding automotive environments. While specific warranty details are not provided here, Gates products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or authorized distributors for exact warranty terms.