One New Aftermarket J&N Electrical Products AlternatorTech Info:-CRITICAL NOTE: 10DN to 10SI Upgrade Kit @ Includes Conversion Harness, FAMILY: Fits Delco 10SI, FAMILY TYPE: 100, VOLT: 12, AMPS: 63, CONDITION: New, REGULATOR CLOCK: 3:00, ROTATION DIRECTION: Clockwise, MOUNT HOLE ID 1: 5/16-18, MOUNT HOLE 1 TYPE: Threaded, MOUNT HOLE 2 TYPE: Unthreaded, MOUNTING EAR THICKNESS: 0.681", MOUNTING EAR THICKNESS: 17.300mm, MOUNTING EAR 2 THICKNESS: 2.008", MOUNTING EAR 2 THICKNESS: 51mm, FAN LOCATION: External, REGULATOR LOCATION: Internal, TERMINAL ID 2: B+, TERMINAL 2 SIZE: M6x1.00, POLARITY: Negative, NUMBER OF GROOVES: 1, PULLEY TYPE: Solid, PULLEY OUTER DIAMETER: 2.626", PULLEY OUTER DIAMETER: 66.700mm, WARRANTY: 1 Year, : 3-Wire System-Arrowhead: 400-12734Replaces Part Number(s): 400-12734 All OEM part numbers and logos are to be used for identification purposes only