4 Seasons Engine Coolant Water Outlet For 1975-1978 GMC C15

1975 GMC C15 Engine: 4.1L L6; Outlet;. 1975 GMC C15 Engine: 4.8L L6; Outlet;. 1976 GMC C15 Engine: 4.1L L6; Outlet;. 1976 GMC C15 Engine: 4.8L L6; Outlet;. 1977 GMC C15 Engine: 4.1L L6; Outlet;. 1978 GMC C15 Engine: 4.1L L6; Outlet; w/o Integral Head;.