2TE25K/3TE25K2M/3TE25K3M
Type and origin Power type Diesel-electric Build date 2005–present Total produced 220
Specifications Configuration: ​  • UIC Co-Co+Co-Co Gauge 1,520 mm (4 ft 11+27⁄32 in) Loco weight 144 t (142 long tons; 159 short tons) per unit 288 t (283 long tons; 317 short tons) total Prime mover 2TE25K : D49 12CHN26/26 2TE25KM : 5D49 16CHN26/26 3TE25K2M : GEVO-12 2/3TE25K3M : 5D49 16CHN26/26 Engine type 4-stroke, V12 diesel
Performance figures Maximum speed 110 km/h (68 mph) Power output 2,500 kW (3,353 hp) per unit 5,000 kW (6,705 hp) total
Career Number in class 502[1] Nicknames Peresvet

The 2TE25K is a main line two-unit diesel-electric locomotive, rated at 5,000 kW (6,705 hp). It is equipped with AC/DC transmission and is designed to haul freight trains on the Russian Federation lines RZD on the broad gauge.

2TE25K diesel locomotive has been used as the basis of the 2TE25A class main line two-unit diesel freight locomotive of the same power rating and featuring AC/AC transmission and collector traction motors.^[2]

From 2017 to 2020, twelve triple-unit 3TE25K2M locomotives rated at 9,300 kW (12,500 hp) have been supplied. These are now the most powerful diesel locomotives on Russian railways.^[1]

• The Museum of the Moscow Railway, at Paveletsky Rail Terminal, Moscow
• Rizhsky Rail Terminal, Home of the Moscow Railway Museum
• Varshavsky Rail Terminal, St.Petersburg, Home of the Central Museum of Railway Transport, Russian Federation
• History of rail transport in Russia