A Mishimoto 1.3 Bar Carbon Fibre Radiator Cap is a high performance replacement for your stock radiator cap. While the stock item is largely fine, once you're running the engine hard you can very quickly outstrip what the stock item can do. This uprated replacement will take up to 1.3 Bar of pressure.Rated up to 1.3 BarCarbon fibreNobody will be expecting carbon fibre hereRunning your engine under hard load for extended periods can quickly put the cooling system under more pressure than the original radiator cap was engineered for.The factory cap will allow coolant to seep out of the system. This Mishimoto Carbon Fibre Radiator Cap is rated up to 1.3 bar which should be considerably more.It's also made of Carbon Fibre. Actual, honest to goodness, all the way through, hand-laid carbon fibre. This makes it both strong and light.It also looks really cool and definitely won't be somewhere people are expecting to see CF. Carbon fibre intake Old hat. Carbon fibre bonnet It's been done. Car