Dayco 89233 Automatic Belt Tensioner Assembly with Smooth Pulley

The Dayco 89233 No Slack Automatic Belt Tensioner is a premium replacement component designed to maintain proper serpentine belt tension for Ford, Mazda, and Mercury vehicles. This complete tensioner assembly features Dayco's patented flat spring technology that automatically compensates for belt stretch and wear while maintaining constant tension throughout the life of your belt.

Key Features:

• Patented flat spring design provides less operating range variation compared to traditional coil spring tensioners
• Heavy-duty cast aluminum housing and arm resists cracking, fatigue, and distortion
• Smooth pulley design with premium lubricated ball bearings for extended service life
• Double high-temperature seals protect bearings from contaminants
• PTFE-coated spring resists abrasion and dampens noise for quieter operation
• Premium thermoplastic rubber spring slot plugs and O-ring seals keep debris out
• Steel locator pins and arm plates ensure precise installation and alignment
• Zinc-coated mounting hardware included for corrosion resistance

This tensioner resolves common belt drive issues including belt squeal, improper tracking, and accessory component failure. By reducing both high tension that causes premature bearing failure and low tension that leads to belt noise and slippage, the Dayco 89233 delivers reliable performance that meets or exceeds OEM specifications. Engineered to outperform and outlast original equipment parts.