New Yankee ace Masahiro Tanaka is already living the American dream — renting an entire Boeing 787 to fly from Japan with his pop-star wife, small pup and a couple of associates.

The pitcher dropped $195,000 for the one-way trip aboard a Japan Airlines Dreamliner jet, which fits up to 186 passengers.

On Sunday, the aircraft carried just Tanaka, his wife, Mai Satoda, a Japanese baseball official, two other pals and the pitcher’s brown toy poodle, Haru.

“It’s a [chartered] private jet. It’s not something the Yankees have prepared,” Tanaka told reporters at Tokyo’s Narita Airport before takeoff.

Tanaka, 25, signed a seven-year, $155 million contract with the Bronx Bombers. Under the deal, it will take him less than a game and a half to earn back the cost of his fancy flight.

Yankee insiders were worried the team may have another splashy spender like Alex Rodriguez on their hands.

“The last thing we need is a T-Rod,” one official said.

The source speculated JAL may have footed the flight’s bill for the publicity.

“We suspect that JAL paid Tanaka to fly him over,” the source said. “There would have been considerable national pride to have him come to America on a Japan Airlines flight.”

A JAL spokeswoman confirmed Tanaka chartered one of its 787s but wouldn’t comment further.

The baseball official on the flight told local media the arrangement had been made so the hurler could arrive for spring training “in the best of form.”

Haru, who turned 2 in December, also arrived in great shape — since he was free to move around the cabin, unlike the canines that get cooped up on regular JAL flights, an FAA official said.

“Haru gave it his all on this long trip,” Satoda wrote after they landed.

“I think he’s rather tired . . . But I’m relieved that he’s eating and toileting OK.”

Tanaka and Satoda were staying at the plush Mandarin Oriental hotel at Columbus Circle ahead of his pinstriped introduction at a Yankee Stadium news conference Tuesday.

There are big expectations for the star, who went 24-0 with the Rakuten Golden Eagles, which he led to the Japanese title last year.

“This is fun,” Tanaka told Kyodo News on Sunday. “I want to do my best in a new situation.”

Additional reporting by Philip Messing