1977-1978 GMC K15 5.0L V8 GAS. 1977-1978 GMC K15 5.7L V8 GAS. 1977-1978 GMC K15 6.6L V8 GAS. Contents: Water Pump, 3 Gaskets, Plug. Quality-assured with 100 percent leakage and functional tests of seals, bearings, castings and fully assembled water pump.
