Modification of Subaru automobile engines effected by this Arizona brand. They are not certified so they are only used in experimental aviation.

-The EA-81 model is a horizontally-opposed, four-cylinder engine that is water-cooled and gives 106 hp of power.

-They use a TBO (Time Between Overhaul) of 1000 Hrs. It weighs 134 Lb and there is the possibility for an electric starter and a 38A alternator.