Part Type: Accessory Drive Belt Idler Pulley. Idler / Tensioner Pulley. Pulley Type: Idler Pulley. Style: Idler / Tensioner Pulley. Pulley Width IN: 1.13 in. Pulley Width MM: 28.7 mm. Type: Pulley. 1996 Ford F-100 Ranger Engine: 2.3L L4; Dealer Installed AC;.