American Locomotive Company

developed by the American Locomotive Company to replace its 244 and 539 engines

The ALCO 300 was an early diesel–electric switcher locomotive built by the American Locomotive Company (ALCO) of Schenectady, New York between 1931 and 1938.

ALCO (American Locomotive Company) built the chassis and running gear

The ALCO C-643DH, also known as the Century 643DH, was a twin-engine diesel-hydraulic locomotive, the first diesel-hydraulic road switcher built in the United States.

The ALCO Century 415 is a diesel-electric locomotive of B-B wheel arrangement produced by the American Locomotive Company (ALCO) as part of their Century Series of locomotives.

Cataloged as a part of ALCO's "Century" line of locomotives, the C420 was intended to replace the earlier RS-32 model.

Cataloged as a part of Alco's Century line of locomotives, the C424 was intended to replace the earlier RS-27 model and offered as a lower-priced alternative to the C425.

Cataloged as part of ALCO's "Century" line of locomotives, the C425 is an upgraded version of the C424.

Cataloged as a part of ALCO's 'Century' line of locomotives, the C430 was an upgraded version of the C425 model.

The C628 replaced the C624 (DL600C/RSD-41) as a part of ALCO's 'Century' line of locomotives.

The ALCO Century 630 is a model of six-axle, 3,000 hp (2.2 MW) diesel-electric locomotive built by the American Locomotive Company (ALCO) between 1965 and 1967.

The ALCO Century 636 was the most powerful single-engine diesel-electric locomotive constructed by the American Locomotive Company (ALCo).

The ALCO Century 855 was a model of 5,500 hp (4,101 kW) diesel-electric locomotive built in 1964 by the American Locomotive Company for the Union Pacific.

The ALCO Century Series locomotives were a line of road switcher locomotives produced by Alco, the Montreal Locomotive Works and AE Goodwin under license in Australia.

The ALCO DL-109 was one of six models of A1A-A1A diesel locomotives built to haul passenger trains by the American Locomotive Company (ALCO) between December, 1939 and April, 1945

The ALCO DL-202-2 and DL-203-2 diesel-electric locomotive (known informally as the Black Maria) was an experimental freight locomotive produced by ALCO of Schenectady, New York.

The ALCO DL420 was the prototype ALCO S-5 diesel-electric switcher locomotive.

A total of 295 were manufactured in Australia between 1958 and 1970 by that country's American Locomotive Company licensee AE Goodwin, Auburn.

designed by the American Locomotive Company and produced under license by Banaras Locomotive Works (BLW) Varanasi, India for Indian Railways

The locomotives were built by a partnership of ALCO and General Electric in Schenectady, New York, between January 1946 and May 1959.

The ALCO HH series was an early set of diesel switcher locomotives built by the American Locomotive Company (ALCO) of Schenectady, New York between 1931 and 1940

The ALCO MRS-1 is a type of diesel-electric locomotive built by the American Locomotive Company for the United States Army Transportation Corps.

The ALCO RS-1 is a 4-axle diesel-electric locomotive built by Alco-GE between 1941 and 1953 and the American Locomotive Company from 1953 to 1960.

This model was built by both Alco (327 units) and Montreal Locomotive Works (99 units).

The ALCO RS-2 is a 1,500–1,600 horsepower (1,100–1,200 kW) B-B diesel-electric locomotive built by the American Locomotive Company (ALCO) from 1946 to 1950.

The ALCO RS-27 (specification DL-640) was a diesel-electric locomotive built by ALCO between December 1959 and October 1962.

Designated as a "DL721" by ALCO, the 2,000 hp RS-32 was intended to compete with EMD's GP20 and GE's U25B locomotives.

The ALCO RS-36 (DL 701) is a 1,800 horsepower (1,300 kW) diesel-electric locomotive of which 40 were produced by ALCO between February 1962 and August 1963 for seven railroads.

The ALCO RS-3m is a diesel-electric locomotive rebuilt from an ALCO RS-3 road switcher.

RSC-1 (заводское обозначение — E1647) — тепловоз типа 10-1-10—10-1-10 и мощностью 1000 л. с. фирмы American Locomotive Company.

ALCO also exported these units to the state railway of Portugal, where Portuguese Railways (CP) designated them Série 1500.

The ALCO RSC-3 was a diesel-electric locomotive of the road switcher type rated at 1,600 horsepower (1,200 kW), that rode on three-axle trucks, having an A1A-A1A wheel arrangement.

The ALCO RSD-1 is a diesel-electric locomotive built by the American Locomotive Company (ALCO).

The ALCO RSD-12 was a C-C diesel-electric locomotive rated at 1,800 horsepower (1.34 MW).

The ALCO RSD-15 is a diesel-electric locomotive built by the American Locomotive Company (ALCO) of Schenectady, New York between August 1956 and June 1960, during which time 75 locomotives were produced.

The ALCO RSD-16 is a diesel locomotive, built by American Locomotive Company.

La ALCo RSD-39 es una locomotora diésel-eléctrica fabricada entre 1965 y 1967 por American Locomotive Company y Euskalduna.

The ALCO RSD-4 was a 1,600 horsepower (1.2 MW) six axle diesel-electric locomotive built by the American Locomotive Company between 1951 and 1952.

The ALCO RSD-5 is a diesel-electric locomotive rated at 1,600 horsepower (1.2 MW), that rode on a pair of three-axle trucks, having a C-C wheel arrangement.

The ALCO RSD-7 was a diesel-electric locomotive of the road switcher type built by ALCO at Schenectady, New York between January 1954 and April 1956.

The ALCO S-1 and S-3 are 660 horsepower (490 kW) diesel-electric switcher locomotives produced by ALCO and their Canadian subsidiary Montreal Locomotive Works (MLW).

The ALCO S-2 and S-4 are 1,000-horsepower (746 kW) diesel electric switcher locomotives produced by ALCO and Canadian licensee Montreal Locomotive Works (MLW).

The Alco S-5 (DL 421A) was a diesel-electric switcher locomotive rated at 800 horsepower (600 kW), that rode on two-axle trucks, having a B-B wheel arrangement.

The Alco S-6 (specification DL 430) was a diesel–electric switcher locomotive constructed by ALCO of Schenectady, New York; a total of 126 locomotives were built between May 1955 and December 1960.

The T-6 was the last series of locomotives built by Alco.

ALCO dropped out of the arrangement in 1928, acquired their own diesel engine manufacturer in McIntosh & Seymour and went on to start its own line of diesel switchers.

The McIntosh & Seymour 531 was a diesel prime mover built by McIntosh & Seymour for use in railroad locomotives built by its parent company, the American Locomotive Company (Alco).

Alco-Designed Diesel Engines Used in Locomotive Production

was an American manufacturer that operated from 1901 to 1969