The Porsche coolant cap is one of the most over looked parts on a car! The caps keep the entire cooling system pressurised to a set pressure.
Unfortunately with the ’00’ & ’01’ caps especially, the pressure rating was not good enough. This can lead to overheating and loss of coolant!
Many people still drive around with these earlier caps fitted to their vehicles. For the cost of the part it’s not worth taking the risk. Make sure to share this with your Porsche pals!