WARNING: This page is about a different car, the 2015 Volkswagen Beetle. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Cylinder Head Seal Identification
Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
Part Number
Ignore
Holes
NOTE:
If varying values occur when measuring the projection, use the cylinder head gasket for the largest value.