After withdrawal from CIÉ, six locomotives were sold to Northern Ireland Railways, which designated them 104 Class.
They entered traffic for NIR in 1986–1987, except 105.
Originally, CIÉ 224 was intended to become 105, but it was subsequently rejected by NIR and replaced by 218, which only entered traffic in 1991.
224 was left stored with NIR until it was scrapped in January 1996.

Of those that entered service, some had very short lives working for their new owners.
They were stored as soon as any problems arose (e.g. a seized engine or traction motor), and the whole class was formally withdrawn in 1993 (107/109) or 1995 (the others).
The locomotives involved, their new numbers and their withdrawal are set out below:
After withdrawal from CIÉ, six locomotives were sold to Northern Ireland Railways, which designated them 104 Class. They entered traffic for NIR in 1986–1987, except 105. Originally, CIÉ 224 was intended to become 105, but it was subsequently rejected by NIR and replaced by 218, which only entered traffic in 1991. 224 was left stored with NIR until it was scrapped in January 1996.
Of those that entered service, some had very short lives working for their new owners. They were stored as soon as any problems arose (e.g. a seized engine or traction motor), and the whole class was formally withdrawn in 1993 (107/109) or 1995 (the others). The locomotives involved, their new numbers and their withdrawal are set out below:
CIE 201 Class