Dayco 89105 - No Slack Heavy Duty Idler/Tensioner Pulley

Idler/tensioner pulley, hd this dayco no slack heavy duty idler/tensioner pulley is designed to replace idler and tensioner pulleys for serpentine drives in heavy duty diesel engine applications.this pulley is manufactured from a high strength powdered metal material to afford wear resistance under harsh environments; and, it features double pressed-in bearings to provide long bearing life despite the shock loads experienced in diesel engine applications.the performance demands of original equipment manufacturers of over-the-road trucking and off-road equipment require a "built for punishment" heavy duty construction, that is why they specify dayco no slack heavy duty pulleys.