skip to content

#3620· ML-4000

Krauss-Maffei ML 4000

🇺🇸 United States ·built by KraussMaffei· from 1961· German-built 3500hp diesel-hydraulic locomotives sold to USA and Brazil

Krauss-Maffei ML 4000, photo 1 of 2
1/2 Drew Jacksich from San Jose, CA, The Republic of California· CC BY-SA 2.0

what is it?

The Krauss-Maffei ML 4000 is a diesel–hydraulic locomotive, built between 1961 and 1969 by German manufacturer Krauss-Maffei in Munich, Germany. It generated 3,540 horsepower (2,640 kW) from two Maybach V16 engines. 37 examples were built in total, for two North American railroads and one South American railroad.

who runs it

base stats

  • speed 113 km/htop speed
  • power 2.6 MWpower output
  • weight 156 tin working order
  • built 37made in total

Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.

fun facts

  • First built 65 years ago, in 1961.
  • 2.6 MW is about 31 family cars (~85 kW each) flat out.
  • Weighs about as much as 26 African elephants (~6 t each).
  • 20.4 m long: about 5 cars parked nose to tail.

diesel locomotive: A diesel engine on board drives the wheels, usually through a generator (diesel-electric).

spec sheet

built
1961–1969
retired
1980
status
preserved
number built
37
kind
Diesel–hydraulic
traction
diesel
origin
🇺🇸 United States
builders
KraussMaffei
operators
Southern Pacific Transportation Company, Denver and Rio Grande Western Railroad, Estrada de Ferro Vitória a Minas
top speed
113 km/h
power
2.6 MW
gauge
1,435 mm standard gauge
wheel arrangement
C′C′
length
20.4 m
weight
156 t
nicknames
(Damned) Krauts, Amerika-loks, Amilok, Ami
Dutch name
ML-4000

From the Wikipedia infobox and Wikidata. Blank means the sources don't say.

Sources: Wikidata Q834412, Wikipedia: Krauss-Maffei ML 4000 (CC BY-SA 4.0).Updated 2026-10-25.

stan runge 23a4304 source