Left engine case for Harley-Davidson Knucklehead 1941-1947
$787.39
Skip to product information
- Knucklehead left hand engine crankcase features steel bearing insert cast in and is machined to fit OE right side case
- Machined steel insert case in place
- Serial number pad for 1936-47 is 5/16" wide and 2-1/4" long, and the 1936-42 pads feature a line between the pad and the case
- Features a steel bearing insert cast in, macined to fit OE right side case
- Order cylinder base studs, case race, timing plug and drain plug separately
- Features blank number boss for serial number
- Case set required line lapping of the main case races
- Order case race available separately
- Left side cases accept standard case race
- Cylinder deck height and motor mount surface must be fit and machined to match the right side case
- Short rib case used 1936 - mid 1941, last 1941 production thru 1947 have the high rib, for the added strength needed for 74 cubic inch.
- Case requires machining before installation, check the inside diameter before machining for flywheel fit
- Areas will have to be machined separately, experirnce required!, not a bolt on installation
- Fits 1941-1947 FL models