Nothing special. Good fit but that was expected. The material is a bit too soft an tall. Makes it hard to judge how much to tighten the head cover bolts before the tacho gear gets out of alignment but still enough to avoid leakage. In the end it was my fear of stripping the threads of the camshaft clamps, this is where the head cover bolts go, that halted the tightening. I complemented with gasket-on-tube but still get some small oil leakage. For me this is acceptable.