Alternator Diode - Need Help with Part Number

[GMAs]

Cheeper too... cost 11 bucks each... but, some places you can get them for 6 bucks each... as the 85's are more common... next step up is the 100 amps ones... but, 85's seems to be taking the shock Ok... otherwise the origianls were shockley types.. regular ones won't take the surg when the gear pump comes on... or the flap motor tries to zero the voltage and the diodes have to go through a sort of water hammer but, electrical in nature... G.M> GMAs