The first models of the Fiatagri 66 series were the 3-cylinder 60-66 and the 4-cylinder 70-66. Slightly later, the 45-66, 55-66, and 65-66 were introduced. The technology was similar to the preceding 466, 566, and 666 models, but the engines were updated to the same ones used in the Fiatagri 90 series. The transmission was fully synchronized, with 12+4 gears. As an optional accessory, there were crawling gears and a 12+12 shuttle gearbox. The gear levers were in the center, and the cab was otherwise very simple. The noise level was now 86-87 dB. The cab in the first picture is Fiatagri's own with tinted windows, and the 45-66 image shows a cheaper Mauser cab. The lifting device on the larger models featured the introduced "click-clack" quick control. The lifting capacity was 2,125-2,900 kg, and sensing was done through the draft arms. The PTO speed of 1000 rpm later became an option.

In 1990, a small tractor adapted to the same exterior design, the 35-66, was introduced, which had a 1.6-liter Lombardini diesel engine and a 16+16 transmission with crawling gears. The 35-66 was available either with a roll bar or a Mauser cab. It remained in production until 1998 and was branded as New Holland in its final years.

The 66 series was exported to nearly all countries except Finland.

This is an automated translation. Please report any issues in the translation.