New old stock part.  Listing is for a single part.  If more than one is pictured it is just to show difference in packaging or condition.  See photos for detail and condition.

Description: Rectifier
OEM(s): Delco
Number of Diodes: 3
Diode Amps: 35
Rectifier Polarity: Positive
Unit Polarity: Negative
Diode Type: Press Fit
Includes Brush Holder?: No
Includes Capacitor?: No
Includes Trio?: No
Notes: 
1/2" Diodes
Application: Delco 25SI Alternators
Weight: 0.31 lbs / 0.14 kg

Find Other Parts in This Category: Rectifiers

Substitutes:
Delco 1971670

References:
Arrowhead ADR1208
Delco 1971670
Regitar MFRX01141, RD27H