An off-duty city firefighter was busted Friday night for allegedly selling cocaine in Manhattan, law enforcement sources said.

Francisco Perez, 27, and another man, Danilo Duran, 32, allegedly were spotted dealing the drugs out of a car on the Lower East Side and were arrested after officers followed them to the Upper West Side, according to the sources.

“They made a couple of hand-to-hand sales,” one source said.

Charges were pending late Friday night against Perez and Duran, the sources said.

The two were busted by Manhattan South anti-crime officers.