ALCO RS-3

Common card · No. 491374

The ALCO RS-3 is a 1,600 hp (1.2 MW), B-B diesel-electric locomotive manufactured from May 1950 to August 1956 by American Locomotive Company (ALCO) and its subsidiary Montreal Locomotive Works (MLW). A total of 1,418 were produced: 1,272 for American railroads, 98 for Canadian railroads, 48 for Brazilian railroads, and 7 for Mexican railroads. The RS-3 greatly resembled the earlier RS-2 and somewhat resembles the RS-1, but it had 100 more horsepower thanks to its 12-cylinder, 1,600 hp ALCO Model 244 engine. It also had some changes to the fuel system and body shape. Much like the RS-1, many RS-3s served for decades; some are still in use as of 2022.

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