Spec: Unit Type: Alternator, Voltage: 12, Rotation: CW, Amperage: 130, Clock: 10, Pulley Class: 2254, Regulator: IR, Fan Type: IF Replaces OEM Numbers: ARROWHEAD: AFD0145, FORD: 5C3T-10300-AA, 5C3T-10300-AC, 5C3Z-10346-AA, 6C3T-10300-AA, 6C3Z-10346-A, J & N: 400-14084, LESTER: 8429, MOTORCRAFT: GL-606, GL-642, GL-903, REMY LIGHT DUTY: 23793, 23797, VISTEON: GH Compatible With/Replacement For: FORD: F-250 SUPER-DUTY 2005-2008, F-350 SUPER-DUTY 2005-2008, F-450 SUPER-DUTY 2005-2008, F-550 SUPER-DUTY 2005-2008 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. 100% New aftermarket Alternator built to meet OEM specifications for Ford