1939-1940 EL bare Knucklehead cylinder head set features exact casting marks and details for 1938 61 Knucklehead models.
Features a small intake port. Includes valves valve guides springs collars and the lower valve spring cover set installed. *NOTE: Accepts cup valve cover primer caps and large 18mm air cooled spark plugs all items available separately. *NOTE: Accepts large 1-3/8 hex Doering #3 spark plug set.

Suggested to use with #42-3637 Lower Valve Spring Cup Set Parkerized.
Suggested to use with #49-0009 Brass Head Primer Cups.
Suggested to use with #49-0878 18mm Doering Spark Plug Set.


UOM (Unit of Measure): SET
Manufactuer:
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V-Twin Manufacturing Part #: 49-1349