This is the moment two hero cops in the Bronx helped save the life of a 3-year-old boy whose desperate dad ran up to them holding the boy’s limp body.

The father approached Officer Ariel Zaremba outside the 44th Precinct stationhouse in Highbridge around 3:30 p.m. Saturday begging for help.

“He said his son wasn’t breathing,” a police source said.

Zaremba and Officer George Lippi checked for the boy’s pulse and made sure his airway was clear. Zaremba then began to perform CPR, but quickly realized the boy needed professional help.

“The child’s jaw was clenching and his eyes were rolling toward the back of his head,” the source said.

As an ambulance was still on its way, Sgt. Anthony Lombardo ordered the officers to take the child to the emergency room.

The cops climbed into a patrol car and raced the boy to Bronx Lebanon Hospital, where medical staff was able to revive him, police said.

Police didn’t detail what lead up to the boy’s breathing problems and referred medical questions to the hospital.