Talked to the Mitsu tech: No, never seen them on the Sports. Yes, seen them on the VR4, No, not on the 'regular' 3G. Hit and miss on the Montero. Says they're there to keep the 'crud' out of the brake system. Also said they need to be removed to do a brake flush. He thinks I may be (partially) correct about that being kind of an anti-slosh/baffle device to help prevent getting air in the brake system.

Maybe. I don't know. As far as I know at this point, Nabco is the manufacturer for all the OEM BMCs for Mitsu. Cars, trucks, SUVs, etc. If there's a difference in the Montero BMC vs the Sport BMC, I can't find it.

I'm more curious about what its really for then what it comes in. The tech wheels a truggy and he's run into the same problem of sucking air on the trail. He uses the same solution I do to try to mitigate the problem - over fill the BMC. Not exactly the best idea. I looked at the BMC again last night. Unless fluid flows through those screens freer than it looks like it would, it looks like it'll keep fluid contained over the ports irrespective of how much bouncing even if the fluid level drops to between full and add. How much help it would be when you stand the vehicle on its butt is questionable but it probably wouldn't hurt. I'd just be happy to not have to do a brake bleed 1-2 times a year.

Edward