List of ALCO diesel locomotives

Template:Short description The American Locomotive Company (ALCO), based in Schenectady, New York, United States produced a wide range of diesel-electric locomotives from its opening in 1901 until it ceased manufacture in 1969. This is a list of ALCO locomotive classes.

For individually notable locomotives, please see List of locomotives. There are numerous individual ALCO locomotives that are preserved in museums or heritage railways. In particular please see sublists List of preserved locomotives in the United States and List of preserved locomotives in Canada.

Boxcab locomotives

Model	Build date	Total produced	Wheel arrangement	Prime mover	Power output	Image
60-ton	1925–1928	26	B-B	Ingersoll-Rand Template:Convert	Template:Convert
100-ton	1925–1928	7	B-B	Ingersoll-Rand 10 × 12 (×2)	Template:Convert × 2
New York Central 1525	1928	1	B-B	Ingersoll-Rand Template:Convert/batteries/3rd rail	Template:Convert
66-ton	1931	6	B-B	McIntosh & Seymour 9½ x 10½	Template:Convert

Switchers

Model	Specification	Build date	Total produced	Wheel arrangement	Prime mover	Power output	Image
ALCO 300	—	1931–1938	11	B-B	M&S 6-330	Template:Convert
ALCO 600	—	1931	1	B-B	6-531	Template:Convert
HH600	—	1931–1939	78	B-B	6-531	Template:Convert
HH900	—	1937–1939	21	B-B	6-531T	Template:Convert
HH660	—	1939–1940	43	B-B	6-538	Template:Convert
HH1000	—	1939–1940	34	B-B	6-538T	Template:Convert
S-1	E-1530	1940–1950	543	B-B	6-539	Template:Convert
S-2	E-1540	1940–1950	1,462	B-B	6-539T	Template:Convert
S-3	E-1530A	1950–1953	137	B-B	6-539	Template:Convert	File:S3-DieselElectricLocomotive-SRM.jpg
S-4	E-1540A	1949–1957	651	B-B	6-539T	Template:Convert	File:GU 1001 S4.jpg
S-5	DL420	1951	1	B-B	6-251	Template:Convert
S-5	DL-421	1954	7	B-B	6-251A	Template:Convert	File:B&M 864 in North Station yards, September 1965.jpg
S-6	DL-430 (1st)	1955–1960	126	B-B	6-251B	Template:Convert	File:Hugh llewelyn 1231 (5963970156).jpg
SB-8/SSB-9	DL-431/DL-461	1956	2 sets	B-B+B-B	6-251B × 2	Template:Convert × 2
T-6	DL-440	1958–1969	57	B-B	6-251B	Template:Convert	File:Alco T-6 On The Daily Local.jpg

Cab units

Model	Specification	Build date	Total produced	Wheel arrangement	Prime mover	Power output	Image
Rebel power cars	—	1935, 1937	3	2-B	6-531	Template:Convert	File:The Rebel streamlined train.JPG
—	DL-103b	1939	1	A1A-A1A	6-538T × 2	Template:Convert × 2
—	DL-105	1940	3	A1A-A1A	6-539T × 2	Template:Convert × 2
—	DL-107	1940–1941	8	A1A-A1A	6-539T × 2	Template:Convert × 2
—	DL-108	1941	3	A1A-A1A	6-539T × 2	Template:Convert × 2
—	DL-109	1941–1945	62	A1A-A1A	6-539T × 2	Template:Convert × 2	File:Old Maude in 1958.jpg
—	DL-110	1942	1	A1A-A1A	6-539T × 2	Template:Convert × 2
—	DL-202	1945	2	B-B	12-241	Template:Convert
—	DL-203	1945	1	B-B	12-241	Template:Convert
FA-1	DL-204, DL206, DL-208, DL-208A, DL-208B	1946–1950	396	B-B	12-244A, B	Template:Convert
FA-1	DL-208C	1950	21	B-B	12-244C	Template:Convert
FB-1	DL205, DL-209, DL-209A, DL-209B	1946–1950	213	B-B	12-244A, B	Template:Convert
FB-1	DL-209C	1950	16	B-B	12-244C	Template:Convert
FA-2	DL-212, DL-212A	1950–1956	308	B-B	12-244D, G	Template:Convert	File:MetroRail 600.jpg
FPA-2	DL-212, DL-212A	1950–1951	54	B-B	12-244D	Template:Convert
FB-2	DL-213, DL-213A	1950–1956	181	B-B	12-244D, G	Template:Convert
FPB-2	DL-213, DL-213A	1950–1956	25	B-B	12-244D	Template:Convert
PA-1	DL-304, DL-304A, DL-304B	1946–1949	169	A1A-A1A	16-244	Template:Convert	File:D&H 19 at Newtonville, April 1978 postcard.jpg
PB-1	DL-305, DL-305A, DL-305B	1946–1949	39	A1A-A1A	16-244	Template:Convert
PA-2	DL-304C, DL-304D	1950–1953	81	A1A-A1A	16-244	Template:Convert
PB-2	DL-305, DL-305D	1950–1953	8	A1A-A1A	16-244	Template:Convert

Four-axle road switchers

Model	Specification	Build date	Total produced	Wheel arrangement	Prime mover	Power output	Image
RS-1	E-1641A	1941–1960	469	B-B	6-244T, 6-539T	Template:Convert	File:SARM5310.JPG
RS-2	E-1661, E-1661A, E-1661B	1946–1950	338	B-B	12-244	Template:Convert
RS-2	E-1661C	1950	30	B-B	12-244	Template:Convert	File:Santa Fe loco.jpg
RS-3	E-1662, E-1662A, E-1662B	1950–1956	1,272	B-B	12-244	Template:Convert	File:ALCO RS3.JPG
RS-11	DL-701	1956–1961	433	B-B	12-251	Template:Convert	File:TPW 400 20050716 Illinois Railway Museum.JPG
RS-27	DL-640	1959–1962	27	B-B	16-251	Template:Convert	File:07 17 09 143xRP - Flickr - drewj1946.jpg
RS-32	DL-721	1961–1962	35	B-B	12-251	Template:Convert	File:Alco RS-32 2035 Diamond Branch Delaware-Lackawanna Railroad in Scranton, Pennsylvania.jpg
RS-36	DL-701XAP	1962–1963	40	B-B	12-251	Template:Convert	File:D&U D&H RS36 5017.jpg

Six-axle road switchers

Model	Specification	Build date	Total produced	Wheel arrangement	Prime mover	Power output	Image
RSC-1		1946	4	A1A-A1A	6-539T	Template:Convert
RSD-1	E-1641	1946	6	C-C	6-244T, 6-539T	Template:Convert
RSD-1	E-1645	1942-1943	57	C-C	6-244T, 6-539T	Template:Convert	File:RSD-1.jpg
RSD-1	E-1646	1944–1945	100	C-C	6-244T, 6-539T	Template:Convert	File:Diesel locomotive DA20-09 (5).jpg
RSC-2	E-1661, E-1661A, E-1661B	1946–1950	86	A1A-A1A	12-244	Template:Convert
RSC-2	E-1661C	1950	5	A1A-A1A	12-244	Template:Convert
RSC-3	E-1662, E-1662A, E-1662B	1950–1955	99	A1A-A1A	12-244	Template:Convert	File:Karachi Circular Railway.jpg
RSD-4	E-1663, E-1663A, E-1663B	1951–1952	36	C-C	12-244	Template:Convert	File:Kennecott Copper Company Locomotive 201 - 1.jpg
RSD-5	E-1664, E-1664A, E-1664B	1952–1955	204	C-C	12-244	Template:Convert	File:CNW1689.jpg
RSD-7	DL-600	1954	2	C-C	16-244	Template:Convert	File:ALCO RSD-7 1953.JPG
RSD-7	DL-600A	1955–1956	27	C-C	16-244	Template:Convert
RSD-12	DL-702	1956–1963	171	C-C	12-251B	Template:Convert	File:ALCo RSD-12 (9194229140).jpg
RSD-15	DL-600B	1956–1960	75	C-C	16-251B	Template:Convert	File:GBW 2407 at IRM.jpg

Century series

ALCO announced its "Century Series" of diesel locomotives in 1963 as a leap forward in power and reliability, an attempt to compete more aggressively with GM-EMD and GE in the marketplace.

Model	Specification	Build date	Total produced	Wheel arrangement	Prime mover	Power output	Image
C415	DL-415	1966–1968	26	B-B	8-251F	Template:Convert	File:CRIP 415 (Alco C415) location unknown, probably Chicago, June 1972 (22405483831).jpg
C420	DL-721A	1963–1968	131	B-B	12-251C	Template:Convert	File:A&M RR.JPG
C424	DL-640A	1963–1967	98	B-B	16-251B	Template:Convert	File:CVSR4241.jpg
C425	DL-640B	1964–1966	91	B-B	16-251C	Template:Convert	File:EL 2452 (C425) at Hammond, IN on September 17, 1967 with a big wave (26983277033).jpg
C430	DL-430 (2nd)	1967–1968	16	B-B	16-251E	Template:Convert	File:Green Bay and Western Railroad Alco C430 No 315 Rear.jpg
C628	DL-628	1963–1968	186	C-C	16-251C	Template:Convert	File:Hamersley Iron 2000 locomotive, Dampier.jpg
C630	DL-630	1965–1968	133	C-C	16-251E	Template:Convert	File:Lehigh Valley 630 (Century 628) at Newark, NJ yards, November 8, 1969 (25454218284).jpg
C636	DL-636	1967–1968	63	C-C	16-251E	Template:Convert	File:Rprx78rpnj.jpg
C855	DL-855	1964	2	B-B+B-B	Dual 16-251	Template:Convert
C855B	DL-856	1964	1	B-B+B-B	Dual 16-251	Template:Convert

Diesel-hydraulic locomotives

Model	Specification	Build date	Total produced	Wheel arrangement	Prime mover	Power output	Image
DH643	DH-400	1964	3	C-C	Dual 12-251C	Template:Convert	File:Southern Pacific -9152.jpg

Military locomotives

Model	Specification	Build date	Total produced	Wheel arrangement	Prime mover	Power output	Image
MRS-1 or RSX-4	E-1670	1953–1954	83	C-C	12-244D	Template:Convert	File:BayCoastRR2085 ex-ESHR exx-USAX.JPG

Locomotives export and narrow gauge

Model	Specification	Build date	Total produced	Wheel arrangement	Prime mover	Power output	Image
FCA-3	DL212	1951-1953	23	A1A-A1A	12-244D	Template:Convert	File:022 PakistanKotriJunction 19931218.jpg
FD-3	DL500	1953	3	C-C	12-244D	Template:Convert
FD-3	DL500A	1955	16	C-C	12-244D	Template:Convert
FPD-5	DL500A	1955–1956	12	C-C	12-244	Template:Convert
Renfe Class 316	DL500A	1957	25	C-C			File:316-017 en Vitoria 1.JPG
FD-6	DL500B	1958–1968	141	C-C	12-251 12-251B	Template:Convert Template:Convert
	DL500B1			-
SEK class A-301	DL500C			C-C	12-251B	Template:Convert
FD-7	DL500CI	1957-1958	99	C-C	12-251B	Template:Convert
	DL500CP	1957-1959	59	-
FD-9	DL500D			C-C	12-251b	Template:Convert
FP-9	DL500G	1965–1973	131	C-C	12-251B	Template:Convert
FPD 9	DL500S	1964-1966	23	C-C	ALCO 251-C	Template:Convert
	DL503S			-
	DL510			-
	DL515			-
	DL515I			-
	DL521			-
	DL522G			-
	DL530			-
RSD-8 (NSW 48)	DL531	1959–1970	212	C-C	6-251D	Template:Convert	File:Arhs 4876 lyndhurst.jpg
RSD-8	DL531A	1958–1959	103	C-C	6-251D	Template:Convert	File:Trem Intra Metro01.JPG
	DL531B			-
	DL531G			-
RS-8	DL532	1966–1974	74	B-B	6-251D	Template:Convert
SEK class A-201	DL532B	1961–1962	10	B-B	6-251D	Template:Convert	File:20070611-AIR-A204-0002.jpg
	DL533			-
	DL534			-
RSD-35	DL535	1963	40	C-C	6-251D	Template:Convert
RSD-35	DL535	1963	70(MLW)	C-C	6-251D	Template:Convert
RSD-39	DL535-S/DL535-T	1965–1967	76	C-C	ALCO 251-D	Template:Convert	File:Alco en via 3º.JPG
YDM-4 RSD-30	DL535A	1961–1969	100 (#6020-#6049 and #6105-#6129)	C-C	6-251D	Template:Convert	File:YDM4-6669 Jaipur Junction, 2008 (3).JPG
ENAFER RSD-35	DL535B	1963, 1969, 1974	26	C-C		Template:Convert
	DL535C			-
DL535E	DL535E	1969 completed by MLW	10	C-C	6-251D	Template:Convert	File:Skagway, AK 99840, USA - panoramio (7).jpg
	DL535M	1963	115	-
	DL535S			A1A-A1A
	DL535T			-
RSD-36	DL536	1978	20	C-C	6-251D	Template:Convert
Tunisian Railways 040-DK	DL536B			-
RSD-37	DL537	1965	12	C-C	6-251D	Template:Convert
SEK class A-9101	DL537	1965		C-C	6-251D	Template:Convert	File:20070420-Korinthos-9106.JPG
	DL539			-
RSD-16	DL540	1957–1959	130	C-C	ALCO 12-251B	Template:Convert	File:Alco RSD-16 NCA Baradero.JPG
RSD-16	DL541	1960–1968	77	C-C	12-251B	Template:Convert
	DL542			-
SEK class A-321	DL543	1961–1970	117	C-C	12-251C	Template:Convert	File:20071104-air-a326-0018.jpg
	DL543A			-
	DL543SPAP			-
	DL544			-
	DL550 DL550K	1964	1	-
	DL551			-
	DL551B			-
DL-560	DL560 DL560A	1963–1964	12	C-C	12-251B	Template:Convert
	DL560B	1966	3	-
WDM-2/ALCO RSD-29	DL560C	1962-1997	2962, 18040 – 18079 (1962), 18112 – 18232 (1962 – 1963), 18245 – 18298 (1964 – 1965), 18337 – 18361 (1965)	C-C	16-251B	Template:Convert	File:WDM 2.jpg
	DL560D	1974	15	-

Montreal Locomotive Works Export locomotives

{{#invoke:Labelled list hatnote|labelledList|Main article|Main articles|Main page|Main pages}}

Model	Specification	Build date	Total produced	Wheel arrangement	Prime mover	Power output	Image
	MX615	1972–1979	74	C-C-1	MLW 8-251A	Template:Convert
	MX620	1973–1980	145	C-C	MLW 12-251C	Template:Convert	File:EMAQ MX620 6156 FCA.jpg
	MX624	1975–1983	69	C-C	MLW 12-251E	Template:Convert
	MX626	1972–1982	32	C-C	MLW 12-251E	Template:Convert
OSE class A-451	MX627	1972–1978	33	C-C	MLW 12-251C	Template:Convert	File:20070504-air-a453.jpg
OSE class A-501	MX636	1974–1980	10	C-C	MLW 16-251E	Template:Convert	File:20071228-air-a504.jpg
	MXS620	1973–1982	100	C-C	MLW 12-251E	Template:Convert	Double End Cab Units
	MXS624	1973–1983	33	C-C	MLW 16-251E	Template:Convert	Double End Cab Units
	MXS627	1978–1980	10	C-C	MLW 16-251C	Template:Convert	Double End Cab Units
	MXS630	1978–1982	33	C-C	MLW 16-251E	Template:Convert	Double End Cab Units

References

• Template:Lamb-Evolution
• Template:Cite book
• Template:Cite book
• Template:Schafer-Vintage Diesel
• Template:Solomon-American Diesel
• Template:Solomon-Alco Locomotives
• Template:Solomon-Vintage Diesel
• Template:Solomon-North American Locomotives

External links

• ALCOWorld