One New Aftermarket J&N Electrical Products AlternatorTech Info:-Arrowhead: ADR0431; Fits Delco: 19205162, 96991181; General Motors: 19205162, 96991181; J&N Electrical Products: 400-12392; Lester: 8486-LESTER: 8486, FAMILY: Fits Delco AD221, VOLT: 12, AMPS: 95, CONDITION: New, MOUNT HOLE ID 1: 10.200mm, MOUNT HOLE 1 TYPE: Unthreaded, MOUNT HOLE ID 2: 10.200mm, MOUNT HOLE 2 TYPE: Unthreaded, MOUNT HOLE ID 3: 8.500mm, MOUNT HOLE 3 TYPE: Unthreaded, MOUNT HOLE ID 4: 8.500mm, MOUNT HOLE 4 TYPE: Unthreaded, MOUNTING EAR THICKNESS: 0.906", MOUNTING EAR THICKNESS: 23mm, MOUNTING EAR 2 THICKNESS: 0.906", MOUNTING EAR 2 THICKNESS: 23mm, MOUNTING EAR 3 THICKNESS: 0.827", MOUNTING EAR 3 THICKNESS: 21mm, MOUNTING EAR 4 THICKNESS: 0.827", MOUNTING EAR 4 THICKNESS: 21mm, FAN LOCATION: Internal, REGULATOR LOCATION: Internal, TERMINAL ID 2: B+, TERMINAL 2 SIZE: M8x1.25, TERMINAL ID 3: F, TERMINAL 3 SIZE: Spade, TERMINAL ID 4: L, TERMINAL 4 SIZE: Spade, POLARITY: Negative, NUMBER OF GROOVES: 5, PULLEY TYPE: Solid, PULLEY OUTER DIAMETER: 2.362", PULLEY OUTER DIAMETER: 60mm, WARRANTY: 1 YearReplaces Part Number(s): 400-12392 All OEM part numbers and logos are to be used for identification purposes only