MPI
The MPI MP40PH-3C is a diesel-electric passenger locomotive in the MPI MPXpress family. The MP40PH-3C introduced a 16-cylinder EMD 710 G3B diesel prime mover rated 4,000 hp. The MP40PH-3C uses an EMD alternator and traction motors.[1]
Plate 01Go Train locomotive engine (MP40PH-3C) - Sheer Power
Plate 02Sounder MP40PH-3C No. 922 Puts on a Magnificent K5LA Horn Show
Plate 03Engines of GO Transit: MP40PH-3C
Plate 04The howl of the GO Transit MPI MP40PH-3C
Plate 05Locomotive MP40PH-3C faster than they look!
Plate 06GO Train MPI MP40PH-3C Locomotive Departing Maple GO Stn
The MPI MP40PH-3C is a diesel-electric passenger locomotive in the MPXpress line built by MotivePower for commuter rail service. The MP40PH-3C variant uses an EMD 16-710G3B-T2 prime mover, is rated at 4,000 hp, and has a maximum speed of 93 mph. GO Transit and Sounder Commuter Rail operate this model. The launch customer for the MP40PH-3C was GO Transit.[1][4][5]
The MP40PH-3C was developed in response to a GO Transit bid request for locomotives capable of generating 4,000 hp, hauling 12 passenger cars, and traveling at speeds up to 93 mph. GO Transit ordered 27 locomotives in 2006, built and delivered between 2007 and 2008. In 2011, MotivePower upgraded the MP40PH-3C to comply with the EPA Tier 3 emissions standard. Three Tier 3 examples were delivered to Sounder commuter rail, and ten additional GO Transit locomotives are also Tier 3 compliant.[1][4][5]
GO Transit placed an order for 27 MP40PH-3C locomotives in 2006.
GO Transit order units were built and delivered beginning in 2007.
GO Transit order locomotives were built and delivered through 2008.
MotivePower upgraded the MP40PH-3C to comply with the EPA's Tier 3 emissions standard.
| Designation | Generation | Vintage | Changes | Source |
|---|---|---|---|---|
| Tier 3-compliant MP40PH-3C | — | 2011 | Upgraded in 2011 to comply with the EPA's Tier 3 emissions standard; three such locomotives were built for Sounder commuter rail, and ten additional locomotives for GO Transit are also Tier 3 compliant. | en.wikipedia.org[1] |
| MP40PH-3C converted to MP54AC | — | 2015 | One GO Transit MP40PH-3C (unit 647) was converted into the first MP54AC prototype by replacing the EMD prime mover and HEP motor with twin Cummins engines. | en.wikipedia.org[1] |
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The MPI MP40PH-3C is a diesel-electric passenger locomotive in the MPXpress line built by MotivePower for commuter rail service.[1][4][5]
The following facts about the MP40PH-3C are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
The control-system platform and OS era of the MP40PH-3C are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the MP40PH-3C are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
No publicly documented compatible parts, consumables, or accessories for the MP40PH-3C are on record.
Answerable by: an OEM parts catalog or a service engineer
No publicly hosted manuals, SOPs, or datasheets for the MP40PH-3C are on record.
Answerable by: university cleanroom staff or an OEM application specialist
The operating principle of the MP40PH-3C is not documented in this record.
Answerable by: an equipment physicist or OEM application engineer
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Last updated Oct 20, 2026.