Kato Rats Out O.J. — 20 Years Too Late!

Freeloader Kato Kaelin, America’s most notorious houseguest, finally blew the whistle on murderous O.J. Simpson — but it was too little, too late!

A key witness at O.J.’s 1995 trial for butchering his ex-wife Nicole Brown Simpson and her waiter pal Ron Goldman, Kato now believes The Juice got away with murder!

“In my opinion, yes, I think he’s guilty,” Kato told Barbara Walters. “In hindsight, and everything, 20 years later, I think that O.J. Simpson is guilty.”

Space cadet Kato, 56, became a laughingstock with his dazed, dumb answers on the witness stand during O.J.’s trial.

Prosecutors questioned O.J.’s houseguest as a “hostile witness” to establish a timeline to prove the disgraced football star could have done the brutal killings.

Kato had gone to McDonald’s with O.J. on the night of the slayings — and was one of the last to see O.J. before the time police said Nicole and Ron were stabbed to death.

Now, as O.J., 68, rots in jail on an unrelated robbery conviction, Kato changed his tune — while he also insisted his trial testimony was accurate and he wasn’t covering for the man who provided him with food and shelter.

He said he only testified about “what I knew” and kept his damning “opinion” on O.J.’s guilt to himself.

However, some question Kato’s timing.

His recent bombshell came just weeks after reality TV diva Kris Jenner, who was friends with both O.J. and Nicole, admitted being wracked with guilt because she didn’t “pay more attention” to the blonde beauty before the tragedy.

Kris is the ex-wife of O.J. “Dream Team” lawyer Robert Kardashian, the father of reality TV stars Kim, Khloe, Kourtney and Rob Kardashian.

“I don’t know why Kato is talking about all this now,” said one insider. “He may want to ingratiate himself with Kris and get a role on “Keeping Up With the Kardashians.”

Kato also drew flak on the Internet.

“No one cares what this man thinks,” one blogger wrote. “They didn’t care then and they don’t care now. The rent check must be due or the book isn’t selling.”