Choose Options Quick view Rectifier DR5052 172-12003 DR5052 MSRP: Now: $12.03 Was: RectifierReplace OEM(s): DelcoFor: Delco 12SI Series 56-78A IR/EF AlternatorssUsed On: Delco 12SI 66-78A AlternatorsBrush Holder Included: NoCondition: NewDiode Amps: 25 AmpsDiode Type: ButtonDiodes... MSRP: Now: $12.03 Was: Choose Options Quick view