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EMD SW1504
HLCX 1525
Type and origin Power type Diesel Builder General Motors Electro-Motive Division (EMD) Model SW1504 Build date 1973 May–August 1973 Total produced 60
Specifications Configuration: ​  • AAR B-B Gauge 4 ft 8+1⁄2 in (1,435 mm) Length 46 ft 8 in (14.22 m) Loco weight 248,000 lb (112,000 kg) Fuel capacity 600–1,000 US gal (2,300–3,800 L; 500–830 imp gal) Prime mover EMD 12-645E Engine type V12 2-stroke diesel Aspiration Roots blower Displacement 9,072 in3 (149 L) Cylinders V12 Cylinder size 9.5 in × 10 in (240 mm × 250 mm) Transmission Main generator: D32, traction motors: D77/78DC Loco brake Straight air Train brakes Air
Performance figures Power output 1,500 hp (1,119 kW)
Career Locale when new: Mexico

The EMD SW1504 is a 1,500 hp (1,119 kW) diesel-electric switcher locomotive built by General Motors' Electro-Motive Division. The type was sold only to Mexico's national railroad, Ferrocarriles Nacionales de México; 60 examples were built between May and August 1973. With the breakup of NdeM, the locomotives have been passed to the variety of successor railroad operators in Mexico; some have been sold to leasing companies in the USA.

• List of GM-EMD locomotives

• Laundry, Mark. The Yard Limit: EMD SW1504. Retrieved on March 23, 2005.
• Marre, Louis A. & Pinkepank, Jerry A. (1989). The Contemporary Diesel Spotter's Guide. Waukesha, WI: Kalmbach Books. ISBN 0-89024-088-4. LCCN 88083625. OCLC 19959644.
• Trainweb.org. The Unofficial EMD Homepage. Retrieved on March 23, 2005.
• McCall, S.A. EMD Switcher Dimensional Data. Retrieved on March 23, 2005.

• Media related to EMD SW1504 locomotives at Wikimedia Commons
• EMD SW1504 photos at rrpicturearchives.net