Review on Upgraded Aluminum N14 Valve Cover for 2007-2012 MINI Cooper S/JCW 1.6L Turbo R55 R56 R57 R58 R59 N14 Engine | OE # 11127646555 11127585907 11127572854 11127585907 11127561714 | HSPSWIFTER by Nonito Shin

The mating surface between the cylinder head and the PCV is identical to the original cover. Disassembly: A blind screw under the vacuum membrane makes disassembly very difficult to paint. Preparation The bottom plastic cover can be removed by applying equal force to the underside of the bottom plastic cover so that it goes over the hidden screw head without damage. After painting, a blind screw is not required to maintain the seal, especially if you apply silicone sealant along the sealing bar. I replaced all Phillips head screws with hex head screws. Alternatively, the cap over the membrane in the lower plastic cover can be removed with a hot knife, the "blind" screw removed, and the membrane cover glued with two-piece plastic. Epoxy resin when ready to assemble. This hot knife approach requires a steady hand to avoid damaging the membrane.