If you regularly change the oil in your MINI, here is a money saving package with 4 MINI factory oil filters with 4 O-rings.
For 2002-2006 R50 MINI Cooper and R53 Cooper S Hatchback or 2005-2008 R52 MINI Cooper and S Convertibles
NOTE: The hole at the bottom of the oil filter will appear much smaller than the shaft in the filter base - this is NORMAL and CORRECT. If you press the filter into the base, the hole will 'stretch' over the shaft. This is a design feature to ensure a tight seal so the oil does not bypass the filter.
For the factory replacement drain plugs, see Oil Drain Plug With Seal Ring.