Fiat expanded its lineup at the top end by entering into a cooperation agreement with Versatile, the best-known manufacturer of large tractors. Introduced at the end of 1979, the 44 series corresponded to Versatile models 835, 875, 935, and 950. The power ratings of the Cummins engines were 230, 280, 330, and 350 hp. The engines had constant power in the 500 rpm range, and the torque increase of the smallest model was as much as 39%. The gear transmission had 4 ranges, each with 3+R (forward plus reverse), and the dual-disc clutch was dry. The weights of the articulated tractors ranged from 11,900 to 14,150 kg. The tractors were manufactured at Versatile's plant in Canada, but their orange-white coloring was similar to Fiat's.

The lineup was complemented by the 470-horsepower Versatile 1250 in 1982. Its coloring was Versatile's yellow-black. Soon after this, however, Fiat abandoned its effort to market large tractors in Europe.

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