79-85 Eldorado, Riviera, and Toronado and 80-85 Seville.
Piston Diameter 2 1/32. Opens to 1.050. 5 1/2 inches pin to pin.
BENDIX Part # L55312
Rear Left Caliper with Pad; Contains CQ ceramic pads $91.79 $15.00 $106.79
BENDIX Part # L55311
Rear Right Caliper with Pad; Contains CQ ceramic pads $91.79 $15.00 $106.79
Maybe this helps
www.rockauto.com
Mick