1938 EL Knucklehead Bare Cylinder Head Set(SET)

19391940 EL bare Knucklehead cylinder head set features exact casting marks and details for 1938 61 Knucklehead modelsbrbrFeatures 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 138 hex Doering 3 spark plug set