Yep they are, different profile. Non deep sump 999 part number - 148.2.096.1B 999S and 999 '05 onwards, deep sump - 148.2.080.1B The stamping on the one I'm looking to replace is OS-1C Cheers
What sort of repair did they do. Mines got a slight flat on one of the cam lobes caused by the plating on the rocker degrading.