1937 EL Knucklehead Bare Cylinder Head Set(SET)

19371938 EL bare Knucklehead head set features OEM production numbers mc sign small intake port primer black plugs manifold nipples and are painted with black heat paintbrbrExact for 1937 only but can be used on 19371939 61 EL models Either type of valve spring cover can be installed either cup type of full cover and top set Accepts baby butt intake manifold springs valves collars spring cups and top tins included and assembled NOTE Valve seats are installed but not cut NOTE Heads include feature detailed casting hallmarks as original black painted NOTE Accepts large 138 hex Doering 3 spark plug set