CNR CKD7A

CNR CKD7A is a 4,220 hp (3,150 kW) C-C diesel-electric locomotive built by in association with.

The first six locomotives were built in 2012-13 for the. All were manufactured at 's factory at, and were tested at the in  before being taken to  by  and handed over to Norfolk Southern. The CKD7A engines initially operated on freight trains on Norfolk Southern's in.

In May 2013, the New England Western Railroad ordered 20 engines. They were built at Dalian and shipped on ro-ro ships to before being handed over to NEWR.

In February 2014, several of NS and NEWR's engines were withdrawn from service and quarantined, after one of NS' engines tested positive for asbestos in a resin used for sound-proofing. This is despite the locomotives being certified as asbestos free. By May 2014, remedial work had been carried out and most of the engines were already back in service.

In 2016, NEWR placed an order with for an additional five engines, which now featured a Tier 4-compliant engine from MTU. In 2021, five more were built by CRRC's plant for NEWR.