|Builder||General Motors Electro-Motive Division (EMD)|
|Build date||April 1960 – March 1963|
|AAR wheel arr.||C-C|
|Gauge||4 ft 8 1⁄2 in (1,435 mm)
5 ft 3 in (1,600 mm), Brazil
|Prime mover||EMD 567D1|
|Power output||1,800 hp (1.3 MW)|
An EMD SD18 is a 6-axle diesel locomotive built by General Motors Electro-Motive Division between April 1960 and March 1963. Power was provided by an EMD 567D1 16-cylinder engine which generated 1,800 hp (1.3 MW).
|Bessemer and Lake Erie Railroad||7||851-857|
|Chesapeake and Ohio Railway||19||1800–1818|
|Chicago and Illinois Midland Railway||2||60-61|
|Duluth, Missabe and Iron Range Railway||19||175-193|
|Reserve Mining Co.||7||1226–1232|
|RFFSA (export to Brazil)||45||3401-3445|
|Korea National Railroad||15||6001-6015|
At least four SD18s have been preserved. Chop-nosed Duluth, Missabe & Iron Range 193 is now an operating member of the Lake Superior Railroad Museum collection. They also have DM&IR 316 in their collection, which is an "SDM"; an EMD SD18 given EMD 645 power assemblies by the Missabe. However, it is still labeled as an SD18.
The South Branch Valley Railroad also regularly operates former Bessemer & Lake Erie SD18 853 as their 182.
A fourth unit is Chesapeake and Ohio 7311, in Chessie System colors and with VLIX reporting marks. It was sold to a company in the State of Washington and is slated for a complete rebuild. As of now the unit has been running freights but should be rebuilt soon.This SD18 rides on Alco trucks.
Additionally, both SD18s owned by the Chicago & Illinois Midland are still in operation, and are used by the Illinois Midland Railroad, the successor to the CIM.
- Pinkepank, Jerry A. (1973). The Second Diesel Spotter’s Guide. Milwaukee, WI: Kalmbach Publishing Company. ISBN 0-89024-026-4.