Threaded onto the front nose of the pinion gear shaft, this heavy-duty self-locking nut clamps the input drive flange tightly against the outer bearing and collapsible crush spacer.
Because pinion nuts lose their locking integrity once removed, fitting a brand-new Blackline nut is mandatory whenever you replace a leaking pinion oil seal, rebuild your differential, install a new Blackline limited-slip differential, or swap your final drive ratio.
