Part Type: Accessory Drive Belt Tensioner Pulley. Idler, Tensioner Pulley. Idler / Tensioner Pulley. Style: Idler / Tensioner Pulley. Pulley Type: Idler Pulley. Type: Pulley. Pulley Width: 1.18 In. 1989 Dodge Spirit Engine: 3.0L V6; Position: Serpentine;.