does anybody know where i can buy bleeder screws for a koyo radiator?
mine cracked the head off of it and now i'm leaking coolant out of my radiator. luckily i have another car i can drive. but the screw out of my original radiator does not fit in the hole. and on the eve of a rx7 club meet!

 

Mazdatrix ALWAYS has them in stock. You might have better luck at a local dealer. The screw is the same for the stock rad as far as I know. I too have a KOYO for a NA and I just bought a new one(bleeder screw) and I was the same. I hope they didnt change it!!!!!!I got mine about a year ago.

 

When I tried the stock one on my Koyo it didn't work. I had to get one from Advance auto parts. I just brought the broken one and matched the size and thread and then cut it to length. The new one was a little long. The new one is white and has a handle on it to turn it by hand instead of a screw driver.

 

did you order the 2nd gen or 3rd gen screw? i want to say that the picture for the second gen screw looks too wide and too short but the 3rd gen one looks right