Offers better fuel flow and retains the stock crossover connection of your '35-'47 style Harley-Davidson split fuel tanks Don't let the stock fuel valve be the main jet - the stock fuel valve setup simply cannot support the fuel demands of today's high-performance engine Stainless steel gas tank adapter and any 22mm threaded Pingel Power-Flo or Guzzler fuel valve (sold separately) will drastically improve your fuel supply Made in the U.S.A.. ADAPTER VALVE BIG TWIN