Dayco's belt tensioner features a patented "flat spring" design that's engineered to provide less operating range variations in tension. This reduces the risk of premature failure due to high tension when a new belt is installed. It also lessens the risk of belt squeal and slippage, or poor accessory performance caused by low tension after the belt begins to stretch and wear.

Features & Benefits:

• Patented flat spring provides less operating range variations in tension for longer life and quieter performance
• Heavy-duty cast aluminum offers additional strength and less fatigue or distortion
• Steel locator pin and pivot tube (where the application demands) provide additional support for critical torque requirements
• Thermoplastic rubber "spring slot plug" keeps out harmful contaminants
• Zinc coated mounting bolt (where included) resists rust, and is concentric for a more even degree of constant tension