BNSF C44-9W 5150

BNSF C44-9W diesel locomotive

BNSF 5150 heading westbound on CSX (former P&LE) at Coraopolis, PA

Burlington Northern was by far the largest customer for the C44-9W, buying just under 1,700 units before production ceased in 2004; the -9W’s FDL prime mover could not meet more stringent emissions guidelines, and was replaced in newer GE locomotives by the GEVO series. BNSF inherited both the BN’s fleet and the 100 units owned by the Santa Fe.