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Union Pacific Diesel Locomotives

The Streamliners -- 1934 to 1953

This page was last updated on July 1, 2020.

(Return to Union Pacific Diesel Index Page)

The locomotives shown here were in service between 1934 and 1953.

Locomotives delivered in 1946 and later (E7s, E8s, and E9s) are shown in the More Information section, below.

Road
Number
Previous
Number
Model Qty. In-Service
Years
Notes
5-M-1A LA-5 E3A 1 1941-1946 Renumbered from LA-5 in 1941; renumbered to 951A in 1946
5-M-1B LA-6 E3B 1 1941-1946 Renumbered from LA-6 in 1941; renumbered to 952B in 1946
7-M-1A, 7-M-2A   E6A 2 1940-1946 Renumbered to 953A, 954A in 1946
(7-M-3B)   E7B     (Delivered in 1946 as UP 961B)
8-M-1A, 8-M-2A   E6A 2 1940-1946 Renumbered to 955A, 956A in 1946
(8-M-3B)   E7B     (Delivered in 1946 as UP 962B)
9-M-1A, 9-M-2A   E6A 2 1940-1946 Renumbered to 957A, 958A in 1946
(9-M-3B)   E7B     (Delivered in 1946 as UP 963B)
(10-M-1A, 10-M-2A)   E7A 2   (Delivered in 1946 as UP 959A and 960A)
50-M-1A, 50-M-2A   Erie A 2 1945-1946 Renumbered to 981A, 982A in 1946
50-M-3B   Erie B 1 1945-1946 Renumbered to 983B in 1946
CD-05-A, CD-05-B M-10005 Streamliner 1 1939-1953 Renumbered from M-10005 in 1937. 
CD-05-C LA-4 (B-unit) Streamliner 1 1939-1953 Renumbered from LA-4 booster unit
CD-06-A, CD-06-B M-10006 Streamliner 1 1939-1953 Renumbered from M-10006 in 1937.
CD-06-C   Streamliner 1 1939-1953 Booster unit, rebuilt from LA-4 cab unit
CD-07-A, CD-07-B M-10003 Streamliner 1 1939-1953 Renumbered from M-10003 in 1937.
CD-07-C   Streamliner 1 1939-1953 Built using components from M-10001
(CP-1)   E7A 1   (Delivered in 1946 as UP 930A)
(CP-2)   E7B 1   (Delivered in 1946 as UP 931B)
LA-1   E2A 1 1937-1946 Renumbered to 921A in 1946
LA-2, LA-3   E2B 2 1937-1946 Renumbered to 922B, 923B in 1946
LA-4 M-10004 Streamliner 1 1938-1939 Renumbered from M-10004 in 1939; used to construct CD booster units in 1939
LA-5   E3A 1 1939-1941 Renumbered to 5-M-1A in 1941
LA-6   E3B 1 1939-1941 Renumbered to 5-M-1B in 1941
LA-4   E6A 1 1941-1946 Renumbered to 924A in 1946
LA-5, LA-6   E6B 2 1941-1946 Renumbered to 925B, 926B in 1946
(LA-7)   E7A 1   (Delivered in 1946 as UP 927A)
(LA-8, LA-9)   E7B 2   (Delivered in 1946 as UP 928B, 929B)
M-10000   Streamliner 1 1934-1941  
M-10001   Streamliner 1 1934-1939  
M-10002   Streamliner 1 1936-1946  
M-10003   Streamliner 1 1936-1939 Renumbered to CD-07 in 1939
M-10004   Streamliner 1 1936-1939 Renumbered to LA-4 in 1938
M-10005   Streamliner 1 1936-1939 Renumbered to CD-05 in 1939
M-10006   Streamliner 1 1936-1939 Renumbered to CD-06 in 1939
SF-1   E2A 1 1937-1946 Renumbered to 901A in 1946
SF-2, SF-3   E2B 2 1937-1946 Renumbered to 902B, 903B in 1946
SF-4   E6A 1 1941-1946 Renumbered to 904A in 1946
SF-5, SF-6   E6B 2 1941-1946 Renumbered to 905B, 906B in 1946
(SF-7)   E7A 1   (Delivered in 1946 as UP 907A)
(SF-8, SF-9)   E7B 2   (Delivered in 1946 as UP 908B, 909B)

More Information

UP's E7s -- Information about UP's E7 cab units and E7 cabless booster units.

UP's E7s -- Roster listings for UP's seven E7 cab units and seven E7 cabless booster units.

UP's E8s and E9s -- Information about UP's 46 E8s (18 cab units and 28 cabless booster units) and 69 E9s (35 cab units and 34 cabless booster units).

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