Crankcases 1941-1947 Harley-Davidson Knucklehead – Replaces OEM# 24520-41

Reproduction crankcases which meet or exceed highest restoration demands. Cast from state-of-the-art materials and machined on CNC equipment for strength and precise fitment. Intended to work with stock or identically constructed engine components. Finished and detailed like the original counterparts so these cases will smoothly blend into your old mill to give it a new life. For ease of installation both case halves are carefully matched and feature pre-installed case bushings, which are line bored and lapped for standard rollers. Cam bushings are already in place and reamed. (for exact measures please see below).

The cases feature a smooth, uniform glass bead blasted finish.

All cases feature laser-engraved CB production numbers, which are registered and filed.

-fits Knucklehead 1941-1947
-cam shaft bushing ID: 20.7 mm
-cast aluminum, bead blasted
-replaces OEM 24520-41