Harrison, 28, who used the handle Kilobit pleaded guilty to three charges and was sentenced overnight by Nevada District Judge Andrew Gordon.
The carder was arrested after buying a fake ID from an undercover special agent in which he admitted being a part of defunct carder group 'ShadowCrew'.
Harrison went down with 26 others as part of Operation Open Market in October 2012 in of a pool of 55 individuals either evading arrest or awaiting trial charged in four indictments in Operation Open Market.
The Department of Justice said the carder market was responsible for the theft of $50 million.
Harrison pleaded guilty to participating in and conspiracy to engage in a racketeer influenced corrupt organisation, and trafficking in and production of false identification documents
US Assistant Attorney General Leslie Caldwell said Harrison made a living off the stolen cards.
"Applying time-honored techniques from mob and gang prosecutions to this new generation of cyber criminals, we were able to infiltrate and bring down the carder.su ring,” Caldwell said.
Homeland Security Investigations executive associate director Peter T. Edge said the "significant sentence" was "entirely fitting" given the damage done.
Harrison began using carder.su in June 2008 a site best known as a credit card marketplace which also traded in narcotics and other computer crime, and like other underground sites required members to be vetted by insiders to join.