Dayco No Slack Automatic Serpentine Belt Tensioner Assembly

The Dayco No Slack Automatic Serpentine Belt Tensioner Assembly keeps the correct tension on the serpentine drive belt. It is also called a drive belt tensioner or automatic belt tensioner. A properly tensioned belt helps the engine's accessories run reliably. These include the alternator, power steering pump, water pump, and air conditioning compressor.

Key Features:

• Automatic spring-loaded design that adjusts for belt stretch and wear, so no manual adjustment is needed
• Helps limit belt slip, noise, and vibration
• Complete assembly designed as a direct replacement for the original tensioner
• Made by Dayco, a long-established name in belt drive and engine accessory drive components
• Helps protect the belt and other accessory drive parts from premature wear

A worn tensioner can cause belt squeal, a fluttering belt, or uneven belt wear. Replacing it with a new Dayco assembly restores proper belt tension. Dayco recommends installing a new serpentine belt at the same time, and checking the idler and drive pulleys for wear.