1977 Ford F250 4.9L 6 Cyl GAS. 1982 Ford F250 4.9L 6 Cyl LPG. 1978-1982 Ford F250 4.9L 6 Cyl GAS. Contents: Water Pump, Gasket, Plug. Quality-assured with 100 percent leakage and functional tests of seals, bearings, castings and fully assembled water pump.