Add to Cart Quick view Regulator D447P 230-12051 D447P MSRP: Now: $124.34 Was: RegulatorReplace OEM(s): DelcoFamily: 50DNFor: Delco 50DN Series Bus AlternatorssUsed On: Transit Bus ApplicationsActivation: IgnitionAdjustable: YesBrush Holder Included: NoCircuit Type:... MSRP: Now: $124.34 Was: Add to Cart Quick view