Description Factory replacement idler pulley for use with a 6 rib serpentine belt. Offered in Black, Silver, Red, Purple or Blue Front Spacer. Each pulley has a severe load 18,000 rpm bearing installed for a lifetime of use.  The external portion of the pulley that contacts the belt is only offered in black.  The color choice below is for the front spacer that covers the bearings.   6.2L vehicles that have electronic power steering have 2 smooth pulleys and 1 grooved pulley. 6.2L vehicles that have hydraulic power steering have 2 smooth pulleys and no grooved.   Most Demons, Red eyes, and Trackhawks have electronic power steering. Most Hellcats have hydraulic power steering.   Installation torque spec:  Idler Pulley Bolts: 29Nm or 21Ftlbs