i got my koyo radiator and install was a breeze but my koyo radiator did not come with a cap! can anyone tell me where i can get one that fits? my old stock cap doesnt

 

Give us a call 626.336.3400. We have plenty of brand radiator caps that fit Koyo. Just be sure to specify for Koyo

 

IIRC dont koyos use a nissan sized cap. I could be wrong but i think thats what it was.

 

my arc radiator smc did come with a 1.1 kg/cm2 and I tried to put my oem radiator (modified 1.3kg/cm2 skunk2) cap on and it did not work.

Thus, I call mackinindustries and asked them they said most aftermarket radiators especially arc will not accommodate oem modified radiator cap. And I have to use arc type a 1.3 kg/cm2.

Some radiator caps 1.3 kg/cm2 example will fit your koyo radiator. Apexi gt spec radiator cap type f, arc type a, and blitz type 1.

 

found a koyo cap for $25 thanks you would think the a $330 radiator would come with a cap