A LED Lighting fixture including a first and a second heat sink section made of high thermal conductivity material and a LED assembly. The first heat sink section includes a closed outer wall defining a housing cavity; and a plurality of first projections projecting inwardly into the housing cavity. The second heat sink section is engageable and securable with the first heat sink section and includes a LED support including a LED engaging wall and a plurality of second projections projecting from an inner surface thereof. At least one of the second projections physically engage a corresponding one of the first projections to define a thermal bridge therebetween, when the first and second heat sink sections are engaged. The LED assembly is engageable with the second heat sink section and is in thermal engagement with the LED engaging wall thereof when engaged with the second heat sink section.