EMD F125

The EMD F125, also named Spirit, is a diesel-electric passenger locomotive currently being built by Electro-Motive Diesel, a subsidiary of Caterpillar Industries. The locomotive will be compliant to EPA Tier 4 regulations, have AC traction systems, advanced crash protection, and a streamlined body which meets Amtrak's loading gauge. The locomotive's maximum speed is 125 mph (200 km/h). Unlike other EMD products, which use EMD's own 2-stroke diesel engines, this locomotive will be powered by a 20-cylinder Caterpillar C175 high speed, four-stroke diesel engine.
Los Angeles' Metrolink is the launch customer for this locomotive. The first locomotive SCAX 905 was delivered in June 2016 followed by many more locomotives within the next year. Testing began in June 2017 and on October 12, 2017, SCAX 908 and 907 debuted on the San Bernardino Line.
Railfans generally agree that the Nathan AirChime K2 this locomotive is equipped with sounds louder yet terrible and painful (even worse than the decent-sounding Rotems). This is due to the fact that the horn is placed under the locomotive (breaking the tradition of having the horn equipped on the top of the locomotive and cab car) as well as operating on more air.
On August 17, 2022. Metra confirmed an order of 20 New EMD F125 Locomotives to replace the old aging F40PH-3 Locomotives and the first locomotive is slated for delivery in Early June 2024 and As of January 3rd, 2024, Metra had an option of 90 More Locomotives to replace more F40PH-3s and Order was made and More of the Locomotives are expected to be delivered by the start of 2026 and Completion is expected by either the end of 2028 or Early 2029.
==Specifications==
*Designation: EMD F125 "Spirit"
*Power: Diesel-Electric, AC Traction motors
*Axles: B-B (4 axles)
*Length: 69'
*Height: 14'7", 3" taller than P42DC
*Prime Mover: Caterpillar 20V-C175 
*HEP Capabilities: Static Inverters rated at 1050 kW
*Maximum Speed: 125 mph (200 km/h)
*Power output: 4,700 hp (3,200 hp when supplying full HEP load to passenger cars)
== Gallery ==
File:Metrolink F125 905.jpg
Category:Four-axled diesel locomotives
Category:Passenger locomotives
Category:EMD locomotives
Category:EPA Tier 4
Category:Diesel locomotives
Category:METROLINK LOCOMOTIVES
Category:Locomotives