The 1026, rated at 112 hp (84 kW) (power take off, (PTO)), was the first 100+ horsepower hydro tractor ever produced.
The Farmall 1026 was produced as a hydro only model. This was unique to the 1026, as the other hydro models produced by International Harvester at the time were also built as gear drive versions in addition to the hydro versions, while still maintaining the same model number.
The Farmall 656 and 826, for example, were available as hydro as well as gear drive versions.
These totals are quite low compared to other tractor models built by International Harvester, and today the Farmall 1026 could be considered a rare tractor, and the International 1026 extremely rare.