Spanner 4.7 V8 complete 02/13

Spanner 4.7 V8 complete 02/13

Dayco's belt tensioner has a patented "flat spring" design designed to provide less tension variation in the working range.this reduces the risk of premature failure due to high tension when a new belt is installed.it also reduces the risk of belt squeaking and slippage, or poor performance of accessories caused by low tension after the belt begins to stretch and wear

• Patented flat spring allows less voltage variation in the working range for longer life and quieter performance
• Heavy-duty cast aluminum provides extra strength and less fatigue or deformation
• Steel positioning pin and hinge tube (where the application requires it) provide additional support for critical torque requirements
• Thermoplastic rubber "spring slot plug" keeps harmful contaminants out
• Galvanized mounting bolt (if included) resists rust and is concentric for a more even degree of constant tension