It’s a sweet deal — except for all the horse manure.

Under a plea deal struck yesterday, the three teenage graffiti “artists” who caused $40,000 in damage to Central Park’s Bethesda Terrace two years ago will stay out of jail, but must perform 200 hours of community service mucking out the park’s horse stables.

“The Central Park Conservancy insisted that their community service be shoveling s- – – in the stables,” said Kevin Canfield, lawyer for Victoria Beniaminova. “It beats going to prison.”

The landmark’s 150-year-old sandstone mosaics were spray-painted with streaks of purple, red and black.