Cylinder Head Housing 911 Boxster 1997 2004 13547505838 Corrosion Resistant: Chrome plated finish with 911 542 135 40 URO Corrosion Resistant: Chrome plated finish with polished heads and ring for a professional look Conformable and Repositionable: The high density urethane foam readily conforms to irregular or curved surfaces and allows for repositioning to achieve perfect alignment This critical engine component ensures optimal valve train operation and maintains proper coolant circulation throughout the cylinder head assembly Cylinder Head Housing For Porsche 996 (1999 2004) and Boxster 986 (1997 2004) Models