Dayco 89252 Accessory Drive Belt Tensioner Assembly

Overview of Dayco Accessory Drive Belt Tensioner Assembly 89252

The Dayco 89252 accessory drive belt tensioner assembly is designed for reliable serpentine belt tensioning in select Ford, Land Rover, Mazda, and Mercury vehicles. This automatic tensioner ensures consistent belt tension and smooth operation for models like the Ford Explorer, Mustang, and Land Rover LR3.

• Serpentine belt type compatible
• Clockwise rotation direction
• Single pulley design with 70mm diameter
• 6-groove pulley with 28.3mm width
• Automatic tensioner for consistent belt tension

Detailed Product Description and Specifications

The Dayco 89252 accessory drive belt tensioner assembly features a single pulley with a 70mm diameter and six grooves, designed to accommodate serpentine belts commonly used in various Ford, Land Rover, Mazda, and Mercury vehicles. The pulley width measures 28.3mm, providing optimal belt contact and reducing slippage. This tensioner operates in a clockwise direction and is automatic, which means it adjusts tension dynamically to maintain proper belt tension throughout engine operation. This helps prevent belt wear and extends the life of the accessory drive system.

Compatible Vehicles and Applications

This tensioner assembly is compatible with multiple vehicle models, including:

• Ford B4000, Explorer, Explorer Sport, Explorer Sport Trac, Mustang, Ranger
• Land Rover LR3
• Mazda Mountaineer
• Mercury Mountaineer

Using the Dayco 89252 ensures proper fitment and function in these vehicles, supporting the accessory drive belt system's performance.

Common Issues Addressed by This Tensioner Assembly

• Eliminates belt slippage caused by improper tension
• Prevents premature serpentine belt wear
• Reduces noise from loose or worn tensioners
• Maintains consistent accessory drive performance
• Helps avoid engine overheating due to belt failure

Installation Notes and Tips

• Ensure the serpentine belt is properly routed before installing the tensioner
• Verify the clockwise rotation direction matches vehicle specifications
• Inspect the belt and pulleys for wear during installation
• Use appropriate tools to relieve tension safely during replacement
• Follow vehicle manufacturer torque specifications for mounting bolts

Quality Assurance and Warranty Information

Dayco manufactures the 89252 tensioner assembly to meet or exceed OEM standards for durability and performance. This part undergoes rigorous quality control to ensure reliable operation in demanding conditions. Warranty coverage details should be confirmed based on the point of purchase and vehicle application.