1-year warranty protects you after your purchase. We're confident that our products will work flawlessly once installed in your vehicle. But in a rare case that it does not, we'll replace it anytime within one year of your order. If you have a problem, we will take every step to assist you, contact us for a replacement.Spec: Unit Type: REGULATOR - EXTERNAL, Voltage: 12, Brief: Generator Regulator100% New aftermarket Regulator - External built to meet OEM specificationsReplaces OEM Numbers: ALLIS CHALMERS: 70229484, ARROWHEAD: GDR6006, ARROWHEAD (OEM): RVR216, DELCO: 1118381, 1118779, 1118977, 1118987, 1118993, 1118997, 1118999, 1119576, D646, INTL HARVESTER: 121577C1, J & N: 231-12004, 231-12032, JOHN DEERE: AT11855, OLIVER: 105114A, PRESTOLITE: 8-290, REGITAR-USA: RVR216, RVR216C, WAI: 81-1906