Time to take the doughnuts.

A Queens cop has been helping himself to doughnuts and coffee at a Rockaways Dunkin’ Donuts — even jumping behind the counter to make himself sandwiches and cram his face full of crullers, the shop’s manager said.

Sgt. Eric Turetsky — who ironically was the No. 2 integrity control officer at his precinct — “never paid once for anything,” just leaving “a dollar or two behind” as a tip, complained the manager at the Beach 129th Street eatery in Belle Harbor.

Police sources said the department was investigating.

Turetsky gained some notoriety in 1997 for blowing the whistle on far more severe allegations of police misconduct.

He shattered the blue wall of silence in the Abner Louima police-torture case by identifying two of the cops involved, including Justin Volpe, who sodomized the Haitian immigrant with a stick in the bathroom of a Brooklyn station house.

Turetsky was praised by city officials for speaking out, but many of his fellow cops viewed him as a turncoat. The image was reinforced when he was moved to the Internal Affairs Bureau and promoted to detective.

Turetsky, 38, now works as a sergeant on the 4 p.m.-to-midnight shift at the 100th Precinct in the Rockaways.

A law-enforcement source said Turetsky has already been interviewed by Internal Affairs over his alleged pastry pilfering.

But when asked for comment on the probe by The Post, Turetsky said: “I’m not aware of that. You’re going to have to contact them.”

Asked about his apparent penchant for discounted doughnuts, he repeated, “You’re going to have to contact them.”

Sources said the cop started frequenting the Dunkin’ Donuts several months ago and quickly made himself at home, flirting with a teen cashier while grabbing “free” doughnuts and coffee.

“He acted very unprofessional,” said the male manager, who asked not to be identified. “The girls here couldn’t stand him. He was rude toward them. He was not professional at all.”

While the married officer would leave cash behind, it was never enough to cover the goods he was taking, the sources said.

A manager reported Turetsky to police about three months ago, and Internal Affairs watched him go into the store on seven different occasions, a police source said. On each of those trips, he went behind the counter to help himself to the goodies, the source said.

NYPD regulations ban cops from getting discounts and freebies.

If it is determined that those rules have been violated, an officer can face penalties ranging from a command discipline — essentially a reprimand — to losing 30 days of vacation time.

NYPD Deputy Commissioner Paul Browne said only, “We don’t comment during open IAB cases on what disciplinary action may result.”

Additional reporting by Dareh Gregorian

larry.celona@nypost.com