ALCO Century 420

The ALCO Century 420 is a four-axle, 2000 hp diesel-electric locomotive. 131 were built between June 1963 and August 1968. Cataloged as a part of ALCO's "Century" line of locomotives, the C420 was intended to replace the earlier RS-32 model.

Original owners
Since 2005, roughly 30% of C420 production exists. All units ordered by Mississippi Export, New York, Chicago & St. Louis Railroad ("Nickel Plate"), and Piedmont & Northern Railway have been scrapped.

The two units delivered to the Piedmont & Northern were the first of the Phase II units.

Preservation

 * Lehigh Valley Railroad 405 is currently operating in Scranton, Pennsylvania, as Delaware Lackawanna Railroad 405.
 * Lehigh Valley Railroad 408 is at the Southern Appalachia Railway Museum (Oak Ridge, Tennessee) as VLIX 2064.
 * Lehigh Valley Railroad 414 is on the Delaware Lackawanna Railroad (Scranton, Pennsylvania).
 * Long Island Rail Road 213 is active on the Dakota Southern RR DS paint scheme, same number Mitchell, South Dakota. It has since been sold to the A&M and renumbered to 69.
 * Long Island Rail Road 220 is at the Yucatan RR Museum as NdeM 220.
 * Louisville & Nashville Railroad 1310 is at the Southern Appalachia Railway Museum (Oak Ridge, Tennessee).
 * Louisville & Nashville Railroad 1315 is at the Southern Appalachia Railway Museum (Oak Ridge, Tennessee).
 * NdeM 5700 is at the Yucatan RR Museum.
 * Seaboard Air Line Railroad 124 is at the Cuyahoga Valley Scenic Railroad (Independence, Ohio) as their 365.
 * Livonia, Avon and Lakeville Railroad ex-DCLR, ESHR, VAMD, LIRR 200, currently in operation.