This product is an OEM spindle nut designed for use in General Motors vehicles, specifically from the AC Delco brand. The part number #10260374 indicates its compatibility with the axle nut in the transmission and drivetrain system. As a genuine GM factory OEM part, it ensures a proper fit and performance in the vehicle's assembly. This spindle nut is crucial for securing the axle in place and maintaining the integrity of the drivetrain components.