The Supertech integral valve stem seal set for Mini Prince R56 applications is a 6mm Viton style supplied as a set of 8. These seals are sized to fit Prince R56 valve stems and provide OEM-style integral sealing during cylinder head maintenance, offering the specified Viton material for appropriate temperature and oil exposure on compatible Mini engines.
Supertech Mini Prince R56 6mm Viton Integral Valve Stem Seal - Set of 8