is it all of the 1.3kg oil caps & radiator caps won't fit on stock engine and radiator?

 

the engine oil cap is not pressurized and does not have a universal type of fitting. The radiator cap is pressurized, similar styles used by nissan and toyota should also fit the evo radiator cap. Not sure if this is what your asking though.

 

so which means even if the oil cap is changed it won't help to handle more heat,right?

 

what?? reword this statement please

 

No, it just means you got a fresh seal on the cap to help prevent it from leaking oil out.

 

lol.. I just had a few beers so I think it helped me understand what he said.