Genuine OEM Nissan Inverter Coolant Tank Cap, part number 214307992C. This cap serves to seal the inverter coolant expansion tank, maintaining the correct system pressure and preventing the ingress of contaminants. It is a critical component of the inverter cooling system. Made to precise specifications for a secure fit. Genuine OEM caps ensure the correct pressure rating and material compatibility, vital for the longevity and performance of the inverter cooling system.