I was checking some of my solenoid valves today due to a rough idle and broke the nipple off of one of the check valves. It was the one that connects to the relief solenoid valve. Does anyone know if all of the check valves on the 13b n/a are the same or does each one have a different flow rate? Also, does anyone know where I can get these besides the mazda dealership. I checked pep boys, no luck. Thanks for any suggestions.

 

Don't know about the sizes, but the check valve for the brake booster stuck on my 88 vert-suffice to say, it was not a plesant experience.

I got mine new from mazda, and it was only $23. I don't know of anywhere else to get them, but for me, I wanted the real deal anyway-having the brake pedal hit the floor at 45mph was not something I would like to repeat.