Dayco 89338 No Slack Automatic Belt Tensioner

The Dayco 89338 No Slack Automatic Belt Tensioner is a high-quality OE replacement component designed to maintain proper serpentine belt tension throughout the life of your engine. This automatic tensioner eliminates belt slippage and noise while ensuring optimal performance of belt-driven accessories including the alternator, power steering pump, air conditioning compressor, and water pump.

Key Features:

• Automatic tension adjustment compensates for belt wear and stretch over time
• Heavy-duty spring mechanism maintains consistent belt tension
• Precision-engineered pulley with sealed bearing for smooth operation and extended service life
• Direct OE fit for select Chevrolet and Pontiac applications
• Manufactured to strict quality standards for reliable performance
• Includes mounting hardware for complete installation

Dayco No Slack tensioners are engineered to meet or exceed OEM specifications, providing dependable operation and reducing the risk of belt failure. This tensioner is an essential maintenance component that should be replaced when installing a new serpentine belt or when the original tensioner shows signs of wear, noise, or improper tension.