Part Type: Accessory Drive Belt Idler Pulley. Idler / Tensioner Pulley. Pulley Type: Idler Pulley. Style: Idler / Tensioner Pulley. 1996 Chevrolet K2500 Engine: 5.0L V8; Grooved Pulley; w/o AC;. 1996 Chevrolet K2500 Engine: 5.7L V8; Grooved Pulley; w/o AC;.