Add to Cart Quick view Regulator D102HD 230-12001 D102HD MSRP: Now: $25.77 Was: RegulatorReplace OEM(s): DelcoFor: Delco 21SI AlternatorssUsed On: Delco Si Series Regulator Used With 20,21,26,30,33,34SI Alternators 1-Wire System W/Webbed Terminals, W/Stud Heavy-Duty Version -... MSRP: Now: $25.77 Was: Add to Cart Quick view