The SD22ECO is another variant in EMD's ever-growing ECO repower catalog. The program launched by EMD in 2008. The core units' 645 prime mover is removed and a new 2,000 hp, 12-710ECO prime mover is implanted. This variant has had limited sales. KCS and KCSM each rostering two. KCS's two units used SDP40 cores, while KCSM's units used SD40-2 cores.
Who bought what?
KCS (QTY:2) #'s 2600-2601
KCSM (QTY:2) #'s 2650-2651
For photo see here http://www.rrpicturearchives.net/showPicture.aspx?id=3012030