Exacct replica Knucklehead cylinder head set 1940-1947 big port feature original cast iron with date code plate and MC sign. Head set include valves, valve seats, springs, collars, guides with parkerized upper and lower valve cover sets installed. Head set is silver heat painted. Brand is manufactured by Motortechnic Mfg.

Replica Motortechnic Mfg. Knucklehead Cylinder Head Set 1940-1947