Most importantly, it has a much higher capacity for coolant than stock ones, which means that your cooling system will be more efficient and will be more resistant to temperature surges in racing applications. Please keep in mind that spending time before purchasing the part to confirm it is indeed exactly what you need can help prevent you from ordering the wrong part.
Replace/return are available if buyers receive wrong/damaged/defective items. Anyway, by nice communications, we can find a way to make you satisfied.