ALCO Century 420
Arkansas and Missouri Railroad 68, an ALCO C420
Type and origin Power type Diesel-electric Builder ALCO Model Century 420 Build date June 1963 – August 1968 Total produced 131
Specifications Configuration: ​  • AAR B-B Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Prime mover ALCO 251
Performance figures Power output 2,000 hp (1,491 kW)

The ALCO Century 420 is a four-axle, 2,000 horsepower (1,491 kW) 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.