2004 Chevrolet Malibu Engine: 3.5L V6; Position: Grooved Pulley;. Part Type: Accessory Drive Belt Idler Pulley. Belt Type: Serpentine. Compatible Years: 2004. Max Belt Width: 06 Rib. Ensure that this part fits your vehicle by entering your vehicle's Year, Make, Model, Trim, and Engine in the Compatibility Table.