This table cross references Pennsy diesel classes with manufacturer model numbers and first year of use on the PRR system. Table is organized by class prefix and number.
| American Locomotive Co. (Alco) | ||
|---|---|---|
| Freight Service | ||
| PRR Class | Builder Model | First on PRR |
| AF15 | FA-1 / FB-1 |
1951 |
| AF16 | FA-2 / FB-2 |
1951 |
| AF24 | RS-27 | 1962 |
| AF24a | C424 | 1963 |
| AF25 | C425 | 1964 |
| AF27 | C628 | 1965 |
| AF30a | C630 | 1966 |
| AF36 | C636 | 1968 |
| Passenger Service | ||
| PRR Class | Builder Model | First on PRR |
| AP20 | PA-1 / PB-1 |
1947 |
| Shifter Service | ||
| PRR Class | Builder Model | First on PRR |
| AS6 | S-1 | 1947 |
| AS6 | S-3 | 1951 |
| AS10 | S-2 | 1950 |
| AS10, AS10m | S-4 | 1951 |
| AS10a | T-6 | 1958 |
| AS10am, AS10ams,AS10as, AS10s | RS-1 | 1948 |
| AS15m | RS-2 | 1950 |
| AS16, AS16m, AS16ms | RS-3 | 1951 |
| AS16a | RSD-5 | 1952 |
| AS18m | RS-11 | 1956 |
| AS18am | RSD-12 | 1958 |
| AS24m | RSD-15 | 1956 |
| APS24ms | RSD-7 | 1956 |
| Baldwin | ||
|---|---|---|
| Freight Service | ||
| PRR Class | Builder Model | First on PRR |
| BF15, BF15a,ABF18 | DR 4-4-1500, DR 4-4-1500B Early "Shark" |
1949 |
| ABF18, BF16 | RF16 Late "Shark" |
1951 |
| BF20 | DR 6-4-2000, DR 6-4-2000B "Shark" |
1948 |
| Passenger Service | ||
| PRR Class | Builder Model | First on PRR |
| BP20 | DR 6-4-2000, DR 6-4-2000B "Shark" |
1948 |
| BP60 | DR 12-8-3000 "Centipede" | 1947 |
| Shifter Service | ||
| PRR Class | Builder Model | First on PRR |
| BS6 | VO 660 | 1943 |
| BS6a | DS 4-4-660 | 1948 |
| BS7, BS7m | DS 4-4-750 | 1950 |
| BS10 | VO 1000 | 1945 |
| BS10a, BS10am | DS 4-4-1000 | 1948 |
| BS10as | DRS 4-4-1000 | 1949 |
| BS12, BS12as,BS12m | S-12 | 1951 |
| BS12am, BS12ams | RS-12 | 1951 |
| BS16m, BS16ms | AS-616 | 1951 |
| BS24, BS24m | RT-624 | 1951 |
| EMD | ||
|---|---|---|
| Freight Service | ||
| PRR Class | Builder Model | First on PRR |
| EF15 | F3A / F3B |
1947 |
| EF15a | F7A / F7B |
1949 |
| EF22 | GP30 | 1963 |
| EF25 | GP35 | 1964 |
| EF25a | SD35 | 1965 |
| EF30a | SD40 | 1966 |
| EF36 | SD45 | 1966 |
| Passenger Service | ||
| PRR Class | Builder Model | First on PRR |
| EP12 | LWT12 | 1956 |
| EP20 | E7A / E7B |
1946 |
| EP22 | E8A | 1950 |
| Freight / Passenger Service | ||
| PRR Class | Builder Model | First on PRR |
| EFP15 | FP7A / FP7B |
1952 |
| Freight / Shifter Service | ||
| PRR Class | Builder Model | First on PRR |
| EFS17m | GP9 / GP9B |
1955 |
| Helper Service | ||
| PRR Class | Builder Model | First on PRR |
| EH15 | F3A | 1948 |
| Shifter Service | ||
| PRR Class | Builder Model | First on PRR |
| ES6 | SW | 1937 |
| ES6 | SW1 | 1945 |
| AA6, ES10 | NW2 | 1941 |
| ES12, ES12m | SW7 | 1950 |
| ES12, ES12m | SW9 | 1951 |
| ES12 | SW1200 | 1958 |
| ES15ax | SD7 | 1953 |
| ES15m, ES15ms | GP7 | 1951 |
| ES17m | SD9 | 1957 |
| Fairbanks Morse (FM) | ||
|---|---|---|
| Freight Service | ||
| PRR Class | Builder Model | First on PRR |
| FF16 | CFA 16-4 / CFB 16-4 "C-Liner" |
1950 |
| FF20 | A ERIE / B ERIE |
1947 |
| Passenger Service | ||
| PRR Class | Builder Model | First on PRR |
| FP20, FP20a | A ERIE / B ERIE |
1947 |
| Shifter Service | ||
| PRR Class | Builder Model | First on PRR |
| FS10 | H10-44 | 1948 |
| FS12, FS12m | H12-44 | 1952 |
| FS16m | H16-44 | 1952 |
| FS20, FS20m | H20-44 | 1949 |
| FS24m | H24-66 "Trainmaster" |
1956 |
| General Electric (GE) | ||
|---|---|---|
| Freight Service | ||
| PRR Class | Builder Model | First on PRR |
| GF25 | U25B | 1962 |
| GF25a | U25C | 1965 |
| GF28a | U28C | 1966 |
| GF30a | U30C | 1967 |
| GF33a | U33C | 1968 |
| Shifter Service | ||
| PRR Class | Builder Model | First on PRR |
| GS4, GS4m | 44 Ton | 1948 |
| Lima Hamilton | ||
|---|---|---|
| Shifter Service | ||
| PRR Class | Builder Model | First on PRR |
| LS25, LS25m | LT2500 | 1950 |
Sources
Form 109-K, Classification and Description of Locomotives and Tenders, Pennsylvania Railroad, 1952.
Walthers Catalog - 1997 and 1999 editions.
"PRR-Talk" - Internet mailing list.
"PRR-FAX" - Internet mailing list.
