Choose Options Quick view Rectifier DR5175PF 172-12010 DR5175PF MSRP: Now: $16.00 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: $16.00 Was: Choose Options Quick view