Mishimoto MMFS-E46-01 BMW M3 Performance Aluminum Fan Shroud Kit, 2001-2006, Silver Direct-fit for BMW E46 M3 2001-2006 Overall size: 25.0" x 16.7" x 3.0" Dyno-proven gains of up to 5 whp at 65007500 rpm Optional fan controller provides complete control of coolant temperatures at idle Mishimoto Lifetime Warranty