So I disassembled my front calipers to get sprayed brembo yellow, when I went and installed them and tried to bleed the brakes my driver caliper was leaking from the middle and not were u bleed from. So I took it apart and figured it was thru the hole in the picture below. So I can’t remember if it came with a o-ring or seal so I went to disassemble the passenger side (was not leaking on that side ) but when I went to loosen the 7mm Allen bolts that’s when it started leaking so I’m assuming I didn’t have the driver side tight enough? So is there not a seal/o-ring? Or do I just tighten it tighter ?

Does this need a o ring ?

 

I believe there is an o-ring there. Check out this video of someone painting a set.

 

That counter-sink is indicative of where an o-ring sits.

 

Thanks for the info! Can I get a o ring at auto parts store or has to be thru brembo ?

 

buy a rebuild kit, which you should have done before taking them apart!!

https://www.partsgeek.com/gp1wd5v-ac...per+Repair+Kit

https://www.acurapartswarehouse.com/...epair_kit.html

https://www.rockauto.com/en/catalog/...epair+kit,1720

 

The yellow at least looks good!