GE B23-7 Article

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GE B23-7
BNSF 4258 GE B23-7.JPG
BNSF 4258 switching the intermodal yards at Commerce, California, February 15, 2005.
Type and origin
Power type Diesel-electric
Builder GE Transportation Systems GE de Brazil
Build dateSEP 1977 – DEC 1984
Total producedU.S. - 412 units; Mexico - 125 units.
 •  AARB-B
Gauge4 ft 8 12 in (1,435 mm) standard gauge
1,600 mm (5 ft 3 in), Brazil
Length62 ft 2 in (18.95 m)
Prime mover GE FDL-12
Engine type V12 diesel
Performance figures
Power output2,250 hp (1,680 kW)

The GE B23-7 is a roadswitcher diesel locomotive model that was first offered by GE in late 1977. Featuring a smaller 12 cylinder version of the FDL engine, it is the successor to GE's U23B produced from early 1968 to mid 1977, but at 62 ft 2 in (18.95 m) long is exactly 2 ft 0 in (0.61 m). longer. It competed with the very successful EMD GP38-2. General Electric also produced a variant, the BQ23-7, [1] [2]no.5130-5139, for the Seaboard Coast Line. A total of 537 B23-7's were built for 9 U.S. customers and 2 Mexican customers.

A B23-7A is a 12-cylinder B23-7 with horsepower boosted to 250 per cylinder or 3,000 horsepower. In 1980 the Missouri Pacific ordered three B23-7A's (#'s 4667-4669, later UP #'s 257-259) and tested them system-wide. The result was the GE model B30-7A, B30-7 with a 12-cylinder FDL prime mover. They were not renumbered into the B30-7A series on the MP because they lacked Sentry Wheel Slip and had different engine governors.

13 B23-7's were built by GE of Brazil in Dec.1979 for United South Eastern Railways(FUS) no.522-524 and National Railways of Mexico(NdeM) no.9130-9139. 17 B23-7s were built from GE kits in Mexico as Ferrocarriles Nacionales de México no.10047-10052 and no.12001-12011.

Southern Railway's 54 units had Southern's "standard" high-short-hoods.

These engines frequently are rebuilt as Control Car Remote Control Locomotive (CCRCL) due to their low value on the used locomotive market.

Original owners

Owner Quantity Numbers Notes
Atchison, Topeka and Santa Fe Railway 69 6350-6418 6405-6418 last B23-7s built

Transferred to BNSF

Conrail 141 1900-2023, 2800-2816 2800-2816 first B23-7s built

Three sold to Metro-North, others split between CSX & NS

Ferrocaril Unidos del Sureste 3 522- 524
Louisville and Nashville Railroad (Family Lines) 15 5115-5129 Transferred to CSX
Missouri Pacific Railroad 85 2289-2358, 4670-4684 2289-2358 renumbered to 4600-4669

Transferred To Union Pacific

Ferrocarriles Nacionales de México 122 1-01-1-08, 9130-9180, 10001-10052, 12000-12011
Providence and Worcester 1 2201
Seaboard Coast Line Railroad (Family Lines) 29 5100-5114, 5130-5139 ( BQ23-7), 5140-5153
Southern Railway 54 3970-4023 High Hoods. Sold to NS
Southern Pacific Railroad 15 5100-5114
Texas Utilities 2 3306–3307


  1. ^ Hans Halberstadt (13 September 1996). Modern Diesel Locomotives. MBI Publishing Company. pp. 62–. ISBN  978-0-7603-0199-9. Retrieved 14 April 2010.
  2. ^ Gerald L. Foster (18 March 1996). A Field Guide to Trains of North America. Houghton Mifflin Harcourt. pp. 46–. ISBN  978-0-395-70112-6. Retrieved 14 April 2010.