An NYPD officer was injured by a hit-and-run driver during a traffic stop on the Lower East Side Tuesday night, police said.

The crash happened as two plainclothes officers were walking back to their unmarked car near East Houston Street and Avenue D about 7:45 p.m., cops said.

One of the cops from Police Service Area 4 was struck by a red vehicle and taken to Bellevue Hospital with a leg injury, police said.

The driver drove off, but was later caught nearby on Delancey and Columbia streets. Charges against the suspect are pending, cops said.