Dayco 89623 No Slack Automatic Belt Tensioner Assembly

The Dayco 89623 is an automatic belt tensioner assembly designed to apply consistent load to serpentine drive belts. This Dayco No Slack automatic belt tensioner is engineered to outperform and outlast competitive OE parts, making it an ideal replacement component for maintaining proper belt tension in automotive applications.

Key Features:

• Heavy-duty cast aluminum spring case that resists cracking and fatigue
• Flat spring design provides less operating range vibrations
• Lifetime lubricated ball bearings for extended service life
• Double high temperature seals to ensure peak bearing performance
• Deflected arm plate decreases rotational movement and extends tensioner life
• Metallic locator pin built to withstand maximum drive demands and correctly position the tensioner for installation

Each component is built to resist rust and endure the toughest conditions while promoting quieter performance and longer life. This tensioner reduces the risk of premature accessory bearing failure due to high tension when a new belt is installed and lessens the risk of belt noise and slippage.