P (maybe R) 6030181101 Is that a #18 head...or is this not the right number?I am assuming that all OM603's share the same head & gasket issues.An original head would have a casting number that reads like THIS: 603 016 14(or 15) 01. The updated number is 603 016 17 01 (or some number greater than 17).
Sometimes it's pretty hard to read those numbers. A 6 could easily be misread as an 8, as could perhaps a 7 for a 1. -- Jim