Visit www.latestforya..com and follow on twitter and Instagram @salau01

Muhammad Ali remains The Greatest — although it’s uncertain how much longer the frail fighter’s reign will last.

The legendary three-time world heavyweight champion was fighting for survival Friday at an Arizona hospital where respiratory problems coupled with his Parkinson’s disease put Ali’s life in peril.

“It could be hours,” tweeted Los Angeles Times sportswriter Lance Pugmire. “Can confirm from very strong source that it’s ‘very, very grave’ for Muhammad Ali.”

The 74-year-old was hospitalized Thursday, the latest in a series of health issues that plagued the poetry-spouting pugilist in recent years.

Muhammad Ali hospitalized with respiratory issue

Family members were warned that Ali’s health appeared worse than during other recent admissions for various problems.

“I can’t really say much more,” said Dr. Abraham Lieberman, Ali’s longtime Parkinson’s physician.

He was treated in early 2015 for a severe urinary tract infection initially misdiagnosed as pneumonia. And he was diagnosed with with the degenerative neurologic Parkinson’s in 1984.

The fighter, who changed his name from Cassius Clay when he switched his religion to Islam, transcended the boxing ring to become an international hero and role model.