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Knucklehead Left Side Engine Case Fits FL 1941-1947

Bitter End - Old School Choppers - One Stop Shoppin' for Hardcore Choppin'

  • Knucklehead left side engine case features steel bearing ins ert cast in and is machined to fit OE right side case.
  • Cast in the USA with V-Twin's exclusive tooling.
  • 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.
  • Case is not a bolt on part, 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.
  • **NOTE: Cylinder deck height and motor mount surface must be fit and machined to match the right side case.
  • Fits:
    FL 1941-1947
  • UOM: 1 - EA              



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