I've got the 4-piston type calipers on the front of my 90 GXL. These calipers are two pieces (i.e., front and back), which are held together with a couple of bolts. The Mazda FSM warns against dissembling the calipers. I'm wonder why the FSM says not to dissembly -- anyone have a clue? Has anyone dissembled theirs? If so, than is there a gasket or o-ring between the housing?

Thanks in advance for your feedback.

Hot_Dog
90 RX7 GXL
02 Acura GSX-S

 

No need to take them apart. You're correct, seals between the halves, and no replacements available. If you rebuild, don't take the calipers apart.