Amtrak P42DC No. 108 is a member of the GE Genesis series of locomotives, specifically the P42 variant. It operates on Amtrak’s diesel-powered routes. It was built by General Electric in August 1997 and was delivered in Phase IV Northeast Corridor paint. It was initially assigned a maintenance base in Wilmington, Delaware and was part of the Northeast Corridor Keystone Pool and generally operated on Keystone trains between Philadelphia and Harrisburg, Pennsylvania. It would occasionally substitute on Northeast Corridor Virginia Pool trains such as the Twilight Shoreliner. In 2003, the NEC Keystone Pool and NEC Virginia Pool ceased to exist, and the 108 was moved to the Northeast Corridor North Pool, and its primary maintenance allocation was transferred to Albany-Rensselaer, New York. 108 was then assigned to diesel powered services in Upstate New York, as well as diesel powered routes in New England based out of Boston, Massachusetts and New Haven, Connecticut, such as the Maple Leaf, the Downeaster, and the New Haven-Springfield Shuttle. It would also run on the Boston-Albany section of the Lake Shore Limited for its regular maintenance changeovers to and from the Rensselaer Shops. Sometime in late 2003, 108 was painted into the Phase Vb paint scheme. In 2008, the 108 began getting routine maintenance in Chicago, Illinois, in addition to Albany-Rensselaer, and would travel more frequently on the Lake Shore Limited to and from Chicago. It also began occasionally operating on other services not operated by the NEC North Pool such as the California Zeyphr, and was seen on the Silver Service as recently as February 2020. In 2009, the 108 sustained front-end damage on its nose and this damaged has not been repaired, as it is now one of the few units whose front was not rebuilt. 108 has the First-Generation variant of the K5LA horn series used on most Genesis locomotives. As of September 2020, 108 has been seen continuing to work routes in New England and was one of the first locomotives to operate on the Downeaster that summer after the service was suspended for 3 months due to the coronavirus pandemic. In the later part of the month, it has been seen working on corridor services along the New Haven-Springfield Line such as the Valley Flyer, which runs farther north to Greenfield, Massachusetts.
As of 2021, it was repainted in the Phase VI scheme for the 50th Anniversary.