S&S Cycle #106-4369 - Crankcase, Assembly, 3-5/8" Bore, 2B Generator, No Oil Feed Hole, Packaged, Natural, For Tin Primary, 1936-'47 bt

The Super Stock® generator style crankcases are designed with a stock like original appearance. This gives the engine builder an alternative to attempting costly repairs on fatigued, broken, worn-out stock crankcases. In spite of the stock appearance, these cases incorporate updated design features that improve overall engine strength and reliability.

FITS

1936–'47 knucklehead engines with tin primary
1948–'64 panhead engines with tin primary
1965–'69 panhead & generator shovelhead with alloy primary
Custom – alternator/generator



Features and Benefits:

Pre-clearanced for strokes up to and including 5"
Motor mounts on crankcases for knucklehead engines are machined to fit stock 1936–'47 frames. An adapter plate is included for 1948 and later style frames
All cases are designed for late style generator (two brush type) with 5?16" mounting bolts to eliminate early generator cradle/mounting strap bosses for simplicity and economics
Use more readily available 1/4"-20 thread fasteners to mount gearcover, oil pump, tappet guides, timer, and timer advance bracket, except KN replacement
Timken® sprocket shaft main bearing, in all years, instead of stock straight roller bearings – resulting in better flywheel assembly stability, placement, and longer engine life.

Fitment

Year(s)	Make	Model Code	Model
1936-1947	Harley-Davidson	—	Big Twin