All have 8mm head stud inserts and should use genuine VW head studs. These cases do not have a groove for the cam plug and require VWB040-101-1572 neoprene cam plug. SW 31# Note: All VW cases are "pickled" when new. Pickling is a preservative that leaves the case colored. This color varies from gold to green. It is not to be removed as it is meant to protect the magnesium from corrosion. Locations that we have machined have LPS metal preservative that is to be washed off. |