A Queens cop has been busted on federal charges of running license plate checks and other corrupt favors for a violent heroin dealer, authorities said Tuesday.

Devon Daniels was using an NYPD computer at the 111th Precinct in Bayside to find out the registered owners of vehicles for Guy Curtis, who headed a violent drug distribution crew called "POV City," according to court papers.

"What u need I got it," Daniels texted the thug on April 9, 2011 in response to a request for information.

"Lmao," Curtis texted back, according to a complaint unsealed in Brooklyn Federal Court.

Then Daniels betrayed his badge: "The 1st one is a grey chevy surban (suburban)…the second one comes back to some n----- from Rosedale."

U.S. Drug Enforcement Administration agents came upon Daniels involvement with Curtis during an investigation that started in Wichita, Kansas, in 2008.

In addition to the license plates, Daniels searched the police database to check whether Curtis was wanted on a warrant, gave him a parking placard for his car and provided the drug dealer with "intelligence on fellow NYPD officers," the complaint states. Daniels also permitted cash proceeds from the drug business to be wired to his bank account.

Daniels, 30, used his partner's password for his corrupt activities.

Curtis pleaded guilty in January to heroin trafficking.

NYPD spokesman Paul Browne said the Internal Affairs investigators traced the dirty deeds to Daniels.

"IAB identified the officer, which led to his arrest and suspension without pay today,” Browne said. “He faces department sanctions, regardless of the outcome of the criminal case, including termination."