BM57 Brake Master Cylinder (Rebuild Kit) Suits: Nissan Skyline, Silvia, Z32

Q. Does my brake master cylinder need to be honed even if it looks ok? A. Yes! It may look smooth to the human eye but the bore could still be out of round and worn. It will require honing for the new piston seals to seal correctly. Q. The fluid sensor connector is on the wrong side, what can I do? A. You can easily swap the sensor connector to either side of the BM57 by following these steps. On the terminal side, push a small flat screwdriver in between the sensor connector and the bottom of the reservoir to lightly pry apart the lock tab. On the opposite side of the sensor connector, push through to pop it out. *This is much easier to do prior to installation! Q. I have a round (or other shape) fluid sensor connector, will it fit? A. No, our fluid sensor connector is rectangle (as shown in the product photo), in order to plug your existing fluid sensor connector into our one, you will need to cut your existing connector off and join the two exposed wires to individual spade terminals. Then, you can push these onto our connector. Q. My OEM pistons have an elongated slot which is different to what will be supplied? Why is this? A. Some brake masters utilise a retaining screw in order to hold the pistons in place. Our pistons do not require this mechanism. If your Brake Master has a retaining lock screw, you will need to either shorten or replace it with a shorter screw in order to block the fluid from leaking.