This is a brand new 1964-1966 Corvette Fuel Pump Rebuild Kit Fix your original fuel pump and don't worry about locating a suitable original! 21 Piece kit that includes: both valves, seals, diaphragm, and the arm spring. Includes all of the necessary internal parts to rebuild / repair your original fuel pump. Seals WORK PROPERLY with today's gas fuel petrol formulation. Quality factory original reproduction.  Rebuilds AC Delco fuel pumps: # 4150, 4262, 4445, 4656, and 4657.  Does not work for the high-horsepower fuel pumps: AC 40366 / GM 6440366. You will receive one that works for either Right RH Passenger Side or Left LH Driver Side.  Our decades of excellent customer service on Ebay shows in our Feedback. Please contact us if there is a problem, and we will do our best to make it right.