Part Description
1955-1990 Big Twin, Pinion shaft nut L/H thread (OEM 24023-54)
Text excerpt from the catalog:
Replacement pinion gear shaft spacer and left hand threaded nut for Panhead, Shovelhead and Evolution Big Twin 1955-1990 or Evolution Big Twin 1991-1992. Machined with perfection to meet or exceed OEM specifications.