Gravity Performance Radiators are designed in house & retain OEM mounting points for a smooth installation. With thicker cores, high pressure caps and polished end tanks they provide not only more efficient cooling but provide a great visual upgrade for all engine bays ---Twin core aluminium radiator will achieve up to 30% greater cooling capability over the OEM item ---Keeps engine temperatures down ---More water volume within a channel means greater cooling efficiency ---Polished alloy and fully TIG welded for strength and long lasting durability ---Designed to be a direct replacement for ease of fitment Fitment ---BMW 3 Series E46 316 | 318 | 320 | 325 | 330 petrol & diesel 1998-2005 models. ---BMW Z4 E85 E86 petrol & diesel 1998-2005 models. Please note - Suitable for automatic transmission models only.