Gates 39074 Accessory Drive Belt Tensioner Assembly

Overview of Gates DriveAlign Premium OE Automatic Belt Tensioner

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39074 is engineered for precise tension control in accessory drive belt systems. Designed specifically for Mazda vehicles including the Mazda 3, 3 Sport, 5, CX-7, MX-5, and MX-5 Miata, this tensioner assembly ensures reliable belt performance and longevity.

• Thermoplastic construction for durability and heat resistance
• Single flanged pulley with 6 V-ribbed grooves
• Outside diameter of 70 mm (2.76 in) and width of 25 mm (0.98 in)
• Two mounting holes for secure installation
• Compatible with V-ribbed accessory drive belts
• OE exact fit and performance

Detailed Product Features and Specifications

This accessory drive belt tensioner assembly features a thermoplastic pulley designed to withstand high temperatures and mechanical stress. The pulley includes six grooves with a V-ribbed contact surface, matching the belt type used in the specified Mazda models. The bearing bore inside diameter measures 17 mm (0.67 in), ensuring smooth rotation and reduced wear. The pulley is flanged to maintain belt alignment and prevent slippage during operation. With an outside diameter of 70 mm and a width of 25 mm, this tensioner fits precisely within the accessory drive system.

About the DriveAlign Premium OE Automatic Belt Tensioner Line

The DriveAlign Premium OE Automatic Belt Tensioner product line by Gates focuses on delivering original equipment (OE) exact replacements for automatic belt tensioners. This line emphasizes precise fitment, reliable tension control, and durable materials to maintain optimal accessory drive belt performance. The 39074 tensioner assembly is part of this line, ensuring compatibility and performance consistent with factory specifications for Mazda vehicles.

Common Applications and Problem Solving

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

Installation Notes and Tips

When installing the Gates DriveAlign Premium OE Automatic Belt Tensioner 39074, ensure the mounting surface is clean and free of debris. Use the two mounting holes to secure the tensioner firmly in place. Verify that the V-ribbed belt aligns properly with the six grooves on the pulley. It is recommended to inspect the belt for wear and replace it if necessary during installation. Follow vehicle-specific torque specifications to avoid over-tightening.

Quality Assurance and Warranty

Gates manufactures the DriveAlign Premium OE Automatic Belt Tensioner 39074 to meet or exceed original equipment standards. The thermoplastic material and precision bearing design contribute to long service life and consistent performance. This part carries an OE comparison rating, confirming its suitability as a direct replacement. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.