S4 V8-4.2L (BHF) (2004)
39.7 mm Minimum dimension -39.3 mm max perm reworking = 0.4 mm dimension
Note: If the maximum permissible reworking dimension is O mm or less than O mm, repeat measurement with a new valve. Replace the cylinder head
if the result obtained is still O mm or less than O mm.
Reworking valve seats