Description Reviews MINI Cooper S Oil Filter Housing for all Generation 3 cars . We have to replace these when the oil filter housing breaks. You will see a major coolant leak or an oil leak under the car. You may also want to replace the coolant pipe as well. We are seeing them melt due to heat, specially in the 3 cyl B36/B38. This housing comes with oil filter housing seal and oil filter already installed ready to bolt on. If this part fails, replace the whole unit because it is plastic. Do not just replace the seals. Fits all gen 3 MINI's with the B36, B38, B46, & B48 engines. Comes with everything you need.