Gates 39279 Accessory Drive Belt Tensioner Assembly

Overview of Gates DriveAlign Premium OE Automatic Belt Tensioner

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39279 is engineered to maintain optimal tension on the accessory drive belt system. Designed specifically for select Mazda models, this tensioner assembly ensures consistent belt performance and longevity.

• Constructed from durable steel for strength and reliability
• Features a single flanged pulley with a 2.76 inch (70 mm) outside diameter
• Equipped with a V-ribbed grooved contact surface and 6 grooves for precise belt engagement
• Includes two mounting holes for secure installation
• Compatible with V-ribbed belt types commonly used in Mazda vehicles
• Bearing bore inside diameter measures 0.67 inch (17 mm) for accurate fitment
• Width of the pulley is 1.02 inch (26 mm), matching OEM specifications

Detailed Product Description and Specifications

This accessory drive belt tensioner assembly from Gates is designed to meet exact OE standards, providing a direct replacement for the original part on compatible Mazda models. The steel construction offers durability under high-stress conditions, while the flanged pulley design helps maintain belt alignment and reduces slippage. The 6-groove V-ribbed pulley ensures proper belt seating and tension, which is critical for the efficient operation of engine accessories such as the alternator, power steering pump, and air conditioning compressor. The tensioner’s bearing bore diameter of 0.67 inch (17 mm) and the pulley width of 1.02 inch (26 mm) are engineered to match factory dimensions, ensuring a precise fit and smooth rotation.

DriveAlign Premium OE Automatic Belt Tensioner Product Line

The DriveAlign Premium OE Automatic Belt Tensioner line by Gates focuses on delivering tensioner assemblies that meet or exceed original equipment specifications. This product line emphasizes durability, precise fitment, and reliable belt tension control, which are essential for maintaining the performance and longevity of the accessory drive belt system. The 39279 part number is part of this line, offering a premium solution for Mazda vehicles requiring a V-ribbed belt tensioner assembly.

Common Applications and Problem Resolution

• Restores proper belt tension to prevent slipping and squealing noises
• Eliminates belt misalignment issues caused by worn or damaged tensioners
• Prevents premature belt wear and extends accessory component life
• Addresses engine accessory drive failures related to tensioner malfunction
• Reduces vibration and noise from the accessory drive system

Installation Notes and Tips

• Ensure compatibility with your specific Mazda model before installation
• Inspect the accessory drive belt for wear and replace if necessary during installation
• Use proper tools to release tension safely and avoid damage to the tensioner or belt
• Verify pulley alignment and secure mounting bolts to factory torque specifications
• After installation, run the engine and check for proper belt tracking and tension

Quality Assurance and Warranty

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39279 is manufactured to meet stringent quality standards, ensuring reliable performance and durability. This part is rated as an exact OE replacement, providing confidence in fit and function. While specific warranty details may vary, Gates typically offers coverage against defects in materials and workmanship, supporting long-term use in compatible Mazda vehicles.