This Pump will work for ALL 6 or 8 bolt pump cases 1965-1998 TH400, Turbo 400, 3L80, 3L80HD & TH475 Transmissions. Pump has been: Cleaned & inspected Pump gears clearances checked Pump mating surfaces flat sanded Stator Tube machined for more Torque Converter Flow The Following NEW Parts Installed or Included: • Front seal • Pump Bushing • O-ring • Gasket • 180 Psi Pressure Regulator Spring • Steel Boost Valve • Sandblasted • Painted Cast Iron Grey Note: Will not work in the mid-sixties variable pitch T400 type units.