The MPI MPXpress is a line of diesel-electric locomotives built by MotivePower (a subsidiary of Wabtec) for commuter rail service. There are five MPXpress models: MP36PH-3S, MP36PH-3C, MP40PH-3C, MP32PH-Q, and MP54AC.

The MP54AC is the fifth version of the MPI MPXpress series and the only Tier-IV compliant locomotive in the series built by Motivepower, Inc. It offers a higher performance than the MP40PH-3C. The MP54AC uses a pair of Cummins 16-cylinder QSK60 engines rated at 2,700 hp each, totaling up to 5,400 hp.

The MP54AC (or MP40PH-T4AC) is MPI's Tier IV-compliant passenger locomotive offering. It uses two Cummins QSK60 diesel engines that produce a combined 5400 horsepower, but can operate on one engine if desired. The locomotive uses AC traction motors supplied by ABB.

The MP54AC (also known as MP40PHTC-T4AC) is the latest locomotive in the MPXpress family and the only model available for sale in the US. It is designed to both meet the EPA's stringent Tier 4 emissions standard and offer higher performance than the MP40PH-3C.

MP54AC [] In 2011, GO Transit sent unit #647 back to MPI to have the EMD prime mover and HEP motor removed and replaced with twin Cummins engines. Unit 647 was returned to GO Transit in late 2015 and underwent testing on December 12, 2015. Initially, there was a plan to convert a total of ten MP40PH-3Cs, but instead, 27 MP54ACs were ordered in ...

Nov 26, 2016 · To meet increasing air-quality standards, they launched the MP54AC series locomotive. While physically similar to the MP40s, the MP54s provide up to 5,400 horsepower using two Cummings QSK 60 Tier-4 compliant engines.

Jun 3, 2020 · The Erie plant will also handle the MPI-designed MP54AC locomotive built for commuter rail agencies. Earlier this year, MP54AC No. 678 from Toronto’s GO Transit arrived in Erie for testing, which began in May. Work also continues on GECX 3000, billed as the first all-battery-powered road locomotive.

Operational flexibility is also (MPI), a Wabtec company, offers the MP54 AC commuter provided with the capability to operate in single engine mode locomotive. Based on the proven MPXpress® platform and for increased fuel savings.

Jan 17, 2024 · MP54AC (MP40PHTC-T4AC) - Tier 4 emission standard model with twin Cummins QSK60 16-cylinder engines of 2,700hp each.

Mar 2, 2016 · The MP54AC is a repower of existing GO Transit MP40PH-3C locomotives utilizing twin Tier 4 Locomotive-certified Cummins QSK60 engines that produce up to 5,400 hp for traction power and HEP (head end power).