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Dayco Gold Label No Slack Heavy Duty Automatic Belt Tensioners are designed for heavy duty diesel engine accessory drive applications. As the major supplier of Belt Tensioners to the heavy duty original equipment manufacturers, Dayco's Gold Label No Slack Heavy Duty Belt Tensioners are guaranteed to be engineered and manufactured to the strictest design specification. The heavy-duty cast aluminum body and pulley arms translate into extra strength and durability. Dayco's Gold Label Heavy Duty Tensioner features a patented flat spring design that's engineered to handle the higher torque and power pulses exerted by today's diesel engines. Rugged belt tensioner pulleys with double lifetime lubricated bearings deliver long lasting, dependable service. In addition, virtually all Dayco Gold Label Heavy Duty Tensioners feature extremely damped designs using a wave spring and a metal ring with a bonded rubber surface to act as a radial shock absorber for the belt tensioner arm. All Dayco NO SLACK tensioners meet or exceed OEM specifications..
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