Depo 344-56002-020 Radiator (BMW 3 SERIES 2.5L L6 98-05 MT/3.0L L6 01-05 MT/Z-4 2.5/3.0/3.2L L6 03-08 MT) OE comparable design to ensure the structural fitment and strength Drop in fit Robust validation tests to guarantee the best quality on every single radiator Only sold by assembly Professional installation recommended