Part Type: Accessory Drive Belt Idler Pulley. 2004 BMW X5 Submodel: 4.4i; Engine: 4.4L V8;EngineCode: N62; BodyCode: E53; Automatic Transmission;. 2004 BMW X5 Submodel: 4.8is; Engine: 4.8L V8;EngineCode: N62B48; BodyCode: E53; Automatic Transmission;.