I need front brake calipers for a 1994 840ci and know that they also fit a few other bmw's also. I need to know what models and years would have them to go on my 840. If anyone knows it would be much appreciated. Thanks!

According to the ETK all 8 series after 8/93 have the same Brembo 4 piston caliper on the front (except the CSI) and no other models are shown using them.

There were similar looking ATE calipers used on other models but you would have to be sure of the interchange and mounting brackets.