COPPER RING CYL.HEAD NUT

This copper ring is designed for mounting nuts on the cylinder head of Citroën engines of the 11CV, 15CV and HY type. The ring acts as a seal between nut and cylinder head and helps limit leakage of combustion gases and coolant. The copper material provides proper fit and thermal conduction under changing loads and temperatures. The ring has an inner diameter of 10.5 millimetres, an outer diameter of 18 millimetres and a thickness of 1.5 millimetres. The dimensions are matched to the mentioned Citroën engines and provide a suitable interface to the original engine design.