Add to Cart Quick view Rectifier DR5174PF 172-12026 DR5174PF MSRP: Now: $24.55 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: $24.55 Was: Add to Cart Quick view