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Dayco Automatic Belt Tensioners
Drive Belt Tensioners

DAYCO Automatic Belt Tensioners

Avoid Bearing Failure, Belt Noise and Slippage with Belt Tensioners

Dayco Automatic Belt Tensioners are designed for heavy-duty diesel engine accessory drive applications. The heavy-duty cast aluminium body and pulley arms translate into extra strength and durability for the toughest drives.

Our Tensioners are used on serpentine belt drives that consist of a single belt powering most of the engine’s accessories. Designed to maintain constant tension on serpentine belt drives, the Dayco Automatic Tensioner features the original flat spring design to provide less operating range variations in tension. 

This innovative design reduces the risk of premature accessory bearing failure, belt noise and slippage, and poor accessory performance caused by low tension after the belt begins to stretch and wear.

  • Higher Torque and Power Pulses with Damage-Resistant Cast Aluminium Spring Cases
  • Steel Pivot Tubes Provide Additional Strength for Critical Torque Requirements 
  • Thermoplastic Nylon Pivot Tube Bushings and Spring Bushings for Quieter Performance
  • Dual Permanently Lubricated Bearings for Reduction in Friction in Operation

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