Norfolk Southern 8801, a GE C40-9 (Dash 9-40C), heads a long grain train at Marion, OH, September 1, 2007. Click to enlarge.

(John Mueller, CC BY 2.0 <>, via Wikimedia Commons)


GE Transportation logo.


The Dash 9 Series is a line of diesel locomotives built by GE Transportation Systems. It replaced the Dash 8 Series in the mid-1990s, and was superseded by the Evolution Series in the mid-2000s. Dash 9 series locomotives are some of the most common in the United States.


The Dash 9 Series is an improved version of the Dash 8 Series. Like the earlier Series, it has a microprocessor-equipped engine control unit, and a modular system of construction of the vehicle body.

All models of the Dash 9 Series are powered by a 16-cylinder, turbocharged, GE 7FDL 4-stroke diesel engine, with electronic fuel injection and split cooling.

Dash 9 Series locomotives also ride on HiAd high adhesion trucks, with low weight transfer characteristics and microprocessor controlled wheelslip.

Six axle models

Common feature
A specification common to all Dash 9 Series six axle models is the AAR wheel arrangement known as C-C.



Type and origin
Power type Diesel-electric
Builder General Electric Transportation
​• AAR C-C (C40-9, C40-9W, C44-9W, C-38AChe), B+B-B+B (Dash 9-40BBW)
Gauge: 4 ft 8+1⁄2 in (1,435 mm)
Trucks: GE HiAd
Length: 73 ft 2 in (22.30 m)
Fuel capacity: 4,600 US gal (17,400 l) (C40-9, C40-9W); 5,300 US gal (20,100 l) (C44-9W)
Prime mover: GE 7FDL16
Engine type: 45° V16, four stroke cycle
Aspiration: Turbocharged
Alternator: GE
Traction motors: GE
Cylinders: 16 (C40-9, C40-9W, C44-9W)
Transmission: Alternator, silicon diode rectifiers, DC traction motors
Performance figures
Power output: 4,000 hp (2,980 kW) (C40-9, C40-9W, Dash 9-BBW); 4,400 hp (3,280 kW) (C44-9W); 5,100 hp (3,800 kW) (C-38AChe)
Operators: Various
Locale: North America, Australia, Brazil, China
Disposition: Most still in service as of 2012.