It's surprising to us how many calls we get for just one piston, but we get several. Here is a USED piston out of an MINI Cooper (gen 2) with a N12. Part Number is 11-25-7-589-348 will fit both the N12 and the N16. All pistons are inspected for damage and wear. Anything that is questionable is never used. Piston comes cleaned up ready to install new rings and bearing. We also highly recommend replacing the rod bolts at time of install (we use the old rod bolts only to hold the correct rod cap in place). We can get you any of the parts needed to complete this job, like a head gasket, piston rings, or rod bearings, or even a timing chain kit. Let us know how we can help!
Note: You can only buy these new from the dealer for $310 for just the piston. The rods are only sold in sets of 4 and run $610 for the set. Buy these quality used parts and save big!