Description Reviews MINI Turbo Aux Coolant Hose. This line goes from the aux coolant pump to the oil filter housing to the oil cooler and block. It's item #7 in the diagram photo. We see these covered in oil from a really bad turbo oil line leak, or it got damaged in some way. Here is a very nice hose that includes everything you need at a lower cost but still keeping a high quality part in place for reliability. We only sell parts we believe in and would fit to our own MINI! This fits the N14 or N18 MINI Cooper S, any year, any model. This is a good line to have on hand when doing an Aux Coolant Pump.