1987 245. Need to replace front brake calipers (and vented rotors and pads). I had gotten my ATE rear calipers from NAPA - remanufactured. They seem fine. The fronts on this car are Girlings. NAPA has 2 types in their catalog - one is 2 piston and the other is 4 piston. Both are for vented rotors. Are these interchangeable? I don't want to have to take mine off to see before I order new ones and I can't tell from the photos on the NAPA site - the exterior views look the same to me but you can see the extra pistons in the interior view.
Suggestions?
Thanks!

 

Early 240s had 4 piston front calipers with 2 brakes lines going to each front caliper. (2 pistons for each section of the master cylinder, with each section going to 1 rear caliper, so if there was a leak, you would still have 3 wheels braking)

Later 240s with abs had only one brake line to each front caliper (89+?)

How many brake lines connections on your caliper? (should be 2)

 

Yes - 2 brake lines, 3 bleeder valves.
I'm thinking NAPA just used the same photos for both kinds as they both had 2 brake line inputs and 3 bleeder valves.
From what you're saying sounds like I need the 4 piston version (I don't have ABS) and that would be great as the 2 piston ones are out of stock anyway.