Dayco Drive Belt Tensioner | Secondary Alternator | 03-07 Ford SuperDuty 6.0L Powerstroke

Dayco's drive belt tensioners are built with a unique, patented flat spring design that minimizes fluctuations in their operating range. This innovation serves to mitigate the chances of premature accessory bearing failure caused by excessive tension when fitting a new belt. Simultaneously, it reduces the risk of issues like belt noise, slippage, or subpar performance stemming from insufficient tension. Within the spring, there's a PTFE string that not only resists abrasion but also dampens noise.

Dayco tensioners are constructed with a robust cast aluminum case and arm, adding durability to the design. This sturdy metal helps prevent cracking and fatigue, enhancing overall strength and minimizing the likelihood of distortion. Other notable features include the inclusion of a steel pivot tube in specific designs for increased stability, thermoplastic rubber spring slot plugs, and rubber O-ring seals to keep contaminants at bay. Furthermore, the mounting bolts are zinc-coated to resist rusting. These tensioners are engineered to surpass and outlast their OE counterparts, with the ability to endure the harshest conditions while promoting quieter operation and a longer lifespan.