502000 Lock tab

Securing the sprocket shaft nut is a critical step in any bottom-end assembly, and this lock tab is the right tool for the job. Specifically designed for 1972 through 1978 Big Twin models, this large lock tab prevents the nut from backing off under the high vibrations and rotational forces of a running engine. It is a direct replacement for OEM part 24018-72, ensuring a factory-standard fit and peace of mind during your next primary or engine overhaul. Sold in a pack of ten, these are great to have on hand for professional shops or dedicated home mechanics working on mid-seventies Shovelheads. Don't risk your engine's internal integrity by reusing old, fatigued locking hardware.