Dayco 89317 Accessory Drive Belt Tensioner Assembly - Water Pump

Overview of Dayco Accessory Drive Belt Tensioner Assembly 89317

The Dayco 89317 accessory drive belt tensioner assembly is designed for reliable serpentine belt tensioning in select Buick, Cadillac, Oldsmobile, and Pontiac vehicles. This automatic tensioner ensures proper belt tension and alignment for optimal engine accessory performance.

• Serpentine belt type compatible
• Clockwise rotation direction
• Single pulley design with 51.9 mm diameter
• Three-groove pulley with 15 mm width
• Automatic tensioner type for consistent belt tension

Detailed Product Description

The Dayco 89317 accessory drive belt tensioner assembly features a single pulley with a diameter of 51.9 mm and a width of 15 mm, designed to accommodate a serpentine belt with three grooves. The pulley rotates clockwise and is not flat, ensuring proper engagement with the belt grooves. As an automatic tensioner, it maintains consistent tension on the belt system, reducing wear and preventing slippage. This assembly is engineered to meet the specifications required for various Buick, Cadillac, Oldsmobile, and Pontiac models, including the Aurora, Bonneville, DeVille, DTS, Eldorado, Lucerne, and Seville.

Compatible Vehicles and Applications

This Dayco accessory drive belt tensioner assembly 89317 is compatible with the following makes and models:

• Buick Aurora
• Buick Lucerne
• Cadillac DeVille
• Cadillac DTS
• Cadillac Seville
• Oldsmobile Aurora
• Pontiac Bonneville
• Cadillac Eldorado

Common Issues Addressed by This Tensioner Assembly

• Eliminates belt slippage caused by improper tension
• Prevents premature belt wear and damage
• Reduces noise from loose or misaligned belts
• Maintains consistent accessory drive performance
• Helps avoid engine accessory failure due to belt issues

Installation Notes and Tips

• Ensure the serpentine belt is properly routed before installing the tensioner
• Verify the pulley rotates clockwise as specified
• Check pulley grooves and width to match the belt profile
• Use appropriate tools to relieve tension safely during installation
• Inspect the belt and other drive components for wear during replacement

Quality Assurance and Warranty

Dayco manufactures the 89317 accessory drive belt tensioner assembly to meet OEM standards for durability and performance. This automatic tensioner is built to provide consistent belt tension and long service life. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.