Mishimoto's performance fan shroud kit for the 2001–2006 BMW M3 (E46) replaces the factory clutch fan with a direct-fit electric shroud and includes a 16-inch high-flow fan producing over 1,850 cfm. It features offset mounting for popular supercharger clearance, comes with hardware and a clutch-fan removal tool, and has dyno-proven gains up to 5 whp at high RPM when used with compatible radiators.
Mishimoto 01-06 BMW M3 Performance Aluminum Fan Shroud w/Fan Controller Kit