Hello Guys, what are we doing for replacement master cylinders for FD3? My mc is sticking and looking for a replacement,
thanks in advance

 

the Mazda number is FD04-43-40ZA, which is NLA
i also show, MC128158, 18M627, MC390113, R12680, 20-3099, 1457-38855, and 130.45110 as aftermarket options

good luck!

 

Or just rebuild it if it's not pitted inside.

 

OEM replacement, or pick up a 929. Not necessary unless you have big brakes, but doesn't hurt either.

P

 

I upgraded to a 929 cylinder. Bought from Chips, direct bolt in with zero issues:

https://chipsmotorsports.com/product...inder-upgrade/

I recommend adding a master cylinder brace. I had a small spongy feeling that just wouldn’t go away no matter how much I bled the system or adjusted the rod. After adding a brace it instantly felt firm, so I guess the firewall does flex a little.

I got mine here:

https://www.rhdjapan.com/cusco-brake...-kit-fd3s.html

but I see Sakebomb etc offer them for LHD cars too

 

I bought my oem 929 master from Ray Crowe at a nice discount