It’s a Knicks-travaganza.

A Knicks superfan on Long Island is celebrating the team’s historic NBA Finals run with a lavish, 10,000 LED light display that cost $5,000 and took 40 hours to install.

James Hentschel, who is known for his elaborate light displays outside his Deer Park home, has had the Knicks-themed blaze of blue and orange up since Game 1.

“If they win tonight, it’s not coming down for at least a week or two. If they don’t, it stays on until they win,” Hentschel, 48, told The Post on Saturday

The contractor purchased the Govee curtain lights last year, and painstakingly installed them in the back and front of his house.

The lights are connected to an app, which enables him to change the scenes year-round for every celebration from Halloween and Christmas to the Fourth of July and his children’s birthday.

On Sunday, he will also be adding a light display for the UFC Freedom 250, which is being held on the South Lawn of the White House.

Hentschel, who also commemorated the Knicks’ playoff run last year outside his house, said neighbors near and far drive by to marvel at the decorations.

“Cars just stop, take pictures, stop, take pictures … and videos,” he said.

His wife isn’t as excited about being in the limelight.

“She tolerates it, I would say. It’s not her favorite thing. But it occupies me and keeps me happy.”