Dayco No Slack Serpentine Belt Idler Pulley

Dayco No Slack serpentine belt idler pulleys, also called accessory drive idler pulleys or idler/tensioner pulleys, are made to replace worn idler and tensioner pulleys on serpentine and V-belt drives. They guide the belt and keep it tracking correctly, which helps keep the accessory drive running quietly and reliably.

Key Features:

• Polymer or steel construction: The line uses spun steel pulleys and specially formulated glass-filled polymer pulleys. The polymer versions are high-strength and wear-resistant.
• Smooth surfaces and tight tolerances: Smoother surfaces and tighter dimensional tolerances reduce vibration and help extend belt life.
• Engineered for durability: 3D computer-aided design (CAD) and finite element analysis (FEA) are used to optimize the design and structural integrity of both plastic and steel pulleys.
• Quality bearings: Lifetime-lubricated bearings and high-temperature seals support long bearing life.
• OE-level quality: The pulleys are built to meet or exceed OEM specifications for dependable replacement performance.

Dayco is a trusted name in belts, tensioners and pulleys. Replacing a worn idler pulley with a No Slack pulley helps protect the serpentine belt and the rest of the accessory drive. Select the child item that matches your application to get the right pulley.