The NYPD is looking for a man who defaced an FDNY firehouse and ambulances with the words “Nazi pigs” in Manhattan, authorities said Monday.

The vandal wrote, “Nazi pigs die” with a black marker on an FDNY garage door at 515 W. 181st St. early Sunday morning, cops said.

A few hours later, he scrawled “Nazi pigs” and swastikas on the sides of four FDNY ambulances and an FDNY communications van near 501 West 172nd St., police said.