[citation needed] Initial construction was by Locotracteurs Gaston Moyse until that company ceased business, then by Fauvet Girel.

[2] Y 8000 machines were used to replace older shunting engines, as well as trip work on minor lines.

Locomotives were later re-engined (1997) with lower emission RVI engines; when re-engined locomotives received the green SNCF Fret livery.

[1][2][3] The locomotives also are certified for use in Italy, limited to shunting work:[1] Y 8120 has been operated by SNCF subsidiary CapTrain Italia.

[4] After 1989 production shifted to a mechanically identical Y 8400 type, which incorporated a radio control system for shunting.