Gates 39221 Accessory Drive Belt Tensioner Assembly - Alternator and Water Pump

Overview of Gates DriveAlign Premium OE Automatic Belt Tensioner

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39221 is engineered to maintain optimal tension on the accessory drive belt system. Designed specifically for Ford and Lincoln vehicles, including models like the F-150, Mustang, Expedition, Navigator, and Transit series, this tensioner assembly ensures reliable belt performance and longevity.

• Thermoplastic construction for durability and resistance to wear
• Single smooth backside pulley with a 2.76 inch (70 mm) outside diameter
• Compatible with V-ribbed belt types
• Two mounting holes for secure installation
• Exact OE comparison rating for direct replacement
• Bearing bore inside diameter of 0.67 inches (17 mm)
• Width of 1 inch (25.5 mm) for precise fitment

Product Line Details: DriveAlign Premium OE Automatic Belt Tensioner

The DriveAlign Premium OE Automatic Belt Tensioner line by Gates focuses on delivering original equipment quality and fitment. This product line is designed to meet or exceed factory specifications, providing a reliable tensioning solution for accessory drive belt systems. The 39221 tensioner assembly is part of this line, ensuring compatibility and performance for Ford and Lincoln vehicles requiring a V-ribbed belt tensioner.

Technical Description and Specifications

This accessory drive belt tensioner assembly features a thermoplastic material construction that offers strength and resistance to environmental factors. The pulley included is smooth on the contact surface and is not flanged, with a diameter of 2.76 inches (70 mm) and a width of 1 inch (25.5 mm). The bearing bore inside diameter measures 0.67 inches (17 mm), supporting smooth rotation and belt alignment. The assembly includes two mounting holes to ensure a secure and stable fit within the engine compartment. It is designed specifically for V-ribbed belt systems, commonly found in the specified Ford and Lincoln models.

Common Applications and Problem Solving

• Restores proper belt tension to prevent slipping or noise
• Eliminates belt misalignment issues that can cause premature wear
• Replaces worn or damaged tensioners to maintain accessory drive system efficiency
• Prevents overheating caused by belt slippage on cooling system components
• Addresses vibration and belt chatter in Ford F-150, Mustang, Expedition, Navigator, and Transit models

Installation Notes and Tips

• Ensure the engine is cool before beginning installation
• Verify compatibility with your specific Ford or Lincoln model and engine configuration
• Use proper tools to remove the old tensioner and install the new assembly securely using the two mounting holes
• Inspect the V-ribbed belt for wear and replace if necessary during installation
• Follow manufacturer torque specifications to avoid over-tightening

Quality Assurance and Warranty

The Gates DriveAlign Premium OE Automatic Belt Tensioner 39221 is manufactured to meet original equipment standards, providing reliable performance and durability. This part carries an OE exact comparison rating, ensuring it matches factory specifications for fit and function. Gates typically offers a limited warranty on their DriveAlign product line; please refer to official Gates documentation for specific warranty details.