Header Tank Cap Astra G, VX220, Zafira A
Header Tank Cap and Seal
Replacement Genuine OE Header Tank / Coolant Tank / Expansion Tank Cap.
The seal on the header tank cap can occasionally be prone to failure and cause loss of pressure in the header tank. This can lead to the possibility of head gasket failure.
Always worth checking the header tank cap is tight and sealing correctly, and replacing if there is any cause for concern
Part Number 90500007
VX220 2.0 Turbo