Upgrading '91 rear brake calipers to '92+
08-25-2004, 03:44 AM
#16
Racer
Join Date: Feb 2004
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Originally Posted by nine64
Peter, here is the part no. that i use.
left rear caliper is 928.352.421.03 and right rear is 928.352.422.02.
left rear caliper is 928.352.421.03 and right rear is 928.352.422.02.
I have 928.352.421.02
NTTY
08-25-2004, 04:03 AM
#17
NTTY,
I got the part no. from Bill Gregory, I don't know how to post link but if you search under my name and "rear blake" (i miss type brake) you will get the thread that i post about rear caliper upgrade.
I got the part no. from Bill Gregory, I don't know how to post link but if you search under my name and "rear blake" (i miss type brake) you will get the thread that i post about rear caliper upgrade.
08-25-2004, 12:44 PM
#19
Burning Brakes
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Here's a summary of part numbers I gathered during my upgrade. The factory numbers are not casted on the calipers but instead a set of Brembo numbers are. They are located on the opposite sides of each other. And for some reason both left and right have the same set of numbers.
Left Rear Caliper (30mm/28mm) - Porsche # (928.352.421.02) = Brembo # (20 4673 00) and (20 4672 01)
Right Rear Caliper (30mm/28mm) - Porsche # (928.352.422.02) = Brembo # (same as left)
Regulator / Bias Valve - (930 355 305 01) but superceeded with (964 355 305 10)
Left Rear Caliper (30mm/28mm) - Porsche # (928.352.421.02) = Brembo # (20 4673 00) and (20 4672 01)
Right Rear Caliper (30mm/28mm) - Porsche # (928.352.422.02) = Brembo # (same as left)
Regulator / Bias Valve - (930 355 305 01) but superceeded with (964 355 305 10)
