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(Top) 1 Original buyers 2 Flexibility 3 See also 4 References

NRE 3GS21C

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NRE 3GS21C

Type and origin
Power type	Diesel-electric
Builder	National Railway Equipment (NRE)
Model	3GS21C
Build date	2008 (2008) – Present
Total produced	27

Performance figures
Power output	2,100 hp (1,570 kW)

The NRE 3GS21C is a low-emissions diesel genset locomotive built by National Railway Equipment (NRE). It is powered by three Cummins QSK19C I6 engines with each one developing 700 horsepower (522 kW) and creating a total power output of 2,100 horsepower (1,570 kW). Instead of a single prime mover, the NRE genset locomotive has three engines that each can be turned off or on as power is needed reducing overall diesel emissions and improving fuel efficiency.^[1] At least 27^[2]^[3] 3GS21C genset locomotives have been produced to date at NRE's Mount Vernon shops in Southern Illinois.^[4]

Original buyers[edit]

Railroad	Quantity	Road numbers	Notes
BNSF Railway	16	1300-1316^[5]	ex-GN and ex-ATSF EMD SD40, SD45 and SD45-2
Dallas, Garland & Northeastern Railroad	3	2000-2002^[6]	ex-UP EMD SD24
Norfolk Southern	1	3850^[7]	Built in 2008. Ex-Norfolk Southern 3188 EMD SD40^[8]
Pacific Harbor Line	2	80-81^[9]	The first 3GS21C built, in Jan. 2008^[10]
Indiana Harbor Belt Railroad	4	2160-2163^[11]	2012
CSX Transportation	1	1600^[12]
Total	27

Because the engines are modular, flexibility is obtained:

If one engine fails, the others can continue at reduced power.
If a lower axle load is needed, one engine can be left off.
When reduced power is needed, one or more of the engines can be turned off, saving fuel and wear and tear.
The QSK19C engine is common to the four variants of the NRE 3GS21C locomotive.
The QSK19C engine is widely used for non-railway applications, and spare parts are readily available.^[13]

^ "N-Viromotive new locomotive". www.nationalrailway.com. Archived from the original on 2007-09-01.

^ Zmudzinski, Lester (August 1, 2011). "Photo: CSXT 1600". RailPictures.net.

^ Burlington Northern Santa Fe Roster information on BNSF - Motive Power. Revised: 11 Dec. 2016.

^ Dallas Garland & Northeastern Roster information on DGNO Present & Past Power. Revised: 6 Feb. 2016.

^ 3GS21CDB NS 3850 NS Norfolk Southern Roster Locomotive.

^ NREC 3GS21C NS 3188 Norfolk Southern.

^ Pacific Harbor Line Locomotives (past & present) Revised: 15 Nov. 2015.

^ PHL 3GS21C PHL 80 Pacific Harbor Line.

^ CSX Motive Power * * * Yard Power * * * Updated: 11 Dec. 2016

^ Cummins Marine (August 2002). "Bulletin 4000084: QSK19-M" (PDF). Archived from the original (PDF) on April 12, 2013.

Low emissions locomotives in North America

Proposed locomotives