Choose Options Quick view Rectifier DR5176PF 172-12027 DR5176PF MSRP: Now: $23.61 Was: RectifierReplace OEM(s): DelcoFor: Delco 21SI, CS144 Series IR/EF AlternatorssUsed On: Delco 21SI, 22SI, 33SI, 34SI & CS144 AlternatorsBrush Holder Included: NoCondition: NewDiode Amps: 50 AmpsDiode... MSRP: Now: $23.61 Was: Choose Options Quick view