Dayco 89378 Belt Tensioner

Dayco No Slack Automatic Belt Tensioners are specifically built to outperform and outlast competitive OE parts. Each component is built to resist rust, endure the toughest of conditions while promoting quieter performance and longer life.
Manufactured with a specially coated patented flat wire spring to allow the internal tension to be concentric, thus providing a more even degree of constant tension
The patented Deflected Arm Plate dampens arm movement, prolonging the life of the tensioner by limiting the amount of rotational movement
The heavy duty cast aluminum spring case resists cracking and fatigue
This tensioner is another Dayco product proudly made in the USA