This piston ring has an 82.5mm diameter and is compatible with select models including A3, A4, A5, A6, Q3, Q5, TT, and CC equipped with 1.8T or 2.0T engines.Compatible engine codes include CCZA.Replaces part numbers 06H198151C and 06H198151E.Also interchangeable with 06H198151G, 06H198151L, 06H198151J, 06H198151R, 06H198151N, and 06H198151K.Supersedes 06J198151P and 06K19815.Manufactured in China.Finish as shown.