Dayco 89263 No Slack Automatic Belt Tensioner Assembly

The Dayco 89263 No Slack Automatic Belt Tensioner Assembly is engineered to maintain constant tension on serpentine belt drive systems, ensuring reliable performance and extended belt life. This complete tensioner assembly features Dayco's patented flat wire spring technology that provides consistent, concentric tension throughout the belt's service life, compensating for stretch and wear while reducing operating range variations.

Key Features:

• Patented flat spring design provides more even tension and reduces risk of premature accessory bearing failure
• Durable cast aluminum housing and arm construction for long-lasting performance
• Smooth pulley design included for proper belt routing
• Steel locator pins and arm plates ensure precise fitment
• Lubricated bearings and high-temperature seals for peak performance in demanding conditions
• Superior resistance to dirt, salt, chemicals, and under-the-hood contaminants
• Engineered to outperform and outlast OEM specifications

This tensioner assembly helps maintain proper tension on engine accessories including alternators, air conditioning compressors, power steering pumps, and water pumps, reducing vibration, friction, and harshness while promoting quieter operation. The Dayco 89263 is designed for vehicles equipped with air conditioning systems and replaces Ford OEM part numbers 1L2E-6B209-CA, 1L2E-6B209-CB, 1L2Z-6B209-AA, and Motorcraft BT-61, as well as aftermarket equivalents including Gates 38274 and Dorman 419-011.