Robert De Niro said “MAGA bomber” Cesar Sayoc is a ticking time bomb on Wednesday, calling him a “danger” after the Florida weirdo got a light sentence Monday for sending pipe bombs to the “Raging Bull” actor and 12 other prominent Democrats and fund-raisers.

“I hope people realize, this fool, he’s a danger,” De Niro raged outside his divorce hearing in Manhattan Wednesday.

The actor, 75, spoke out after a Manhattan federal judge handed Sayoc a cushy 20-year prison sentence — rather than the life imprisonment prosecutors sought — for the two-week reign of terror last October when he sent improvised explosive devices to prominent critics of President Trump.

Judge Jed Rakoff said Monday the sentence was “no more” and “no less” than what Sayoc deserved, because the bombs never actually exploded.

“I conclude that Sayoc, though no firearms expert, was capable of making bombs capable of exploding,” Rakoff said. “The fact he made them unable to explode was a conscious choice.”

The 57-year-old terrified the country last October when he sent improvised explosive devices to critics of the president including De Niro, Hillary Clinton, Joe Biden, Barack Obama and the CNN headquarters in Atlanta.

De Niro was unusually chatty to reporters on Wednesday at Manhattan civil court, where he is going through a bitter $500 million divorce battle with wife Grace Hightower.

The actor says a 2004 prenup is watertight and leaves his wife of 20 years with a $6 million apartment, $500,000 cash and $1 million a year in alimony.

But Hightower, who did not appear Wednesday, has argued she is entitled to half his half-billion-dollar fortune, which comes from movies and his lucrative stake in the Nobu sushi chain.

Attorneys for both sides huddled for a closed meeting in the judge’s chambers on Wednesday. De Niro’s attorney said they had “a productive day” while leaving the courthouse but declined to comment further.