CHICAGO — At long last, the Yankees are adding a bat.

The club traded for Luis García Jr. from the Nationals, The Post confirmed Sunday, acquiring the left-handed slugger in an attempt to provide some much-needed help for the struggling lineup.

“He’s been a hitter that’s really come of age this year,” Aaron Boone said after the Yankees’ 2-1 win over the Cubs. “Really, one of the best left versus right hitters in the National League this year [.918 OPS]. We think he fits our ballpark very well and should help, hopefully, give a little jolt to our offense, which has obviously scuffled here over an extended period. So we’re excited about him, hear great things about him and can’t wait to see him impact our lineup.”

García cost the Yankees four pitchers in Yovanny Cruz, Jake Bird and prospects Ben Grable (another reliever) and Jack Cebert.

While he is not a perfect fit positionally — he is expected to get the bulk of his at-bats at first base or DH against righties — García is batting .283 with an .873 OPS and 23 home runs in 104 games. His .560 slugging percentage led the National League and should provide a shot in the arm for a Yankees lineup that is missing Aaron Judge, Cody Bellinger and Giancarlo Stanton — and could be until September.

The 26-year-old García, who is under team control through 2027, has been strictly a first baseman this season for the Nats, but previously saw most of his action at second base, where he accrued minus-17 in defensive runs saved in 2025 — the worst of any player at the position.

The Yankees acquired Luis García Jr. from the Nationals ahead of the trade deadline. IMAGN IMAGES via Reuters Connect

Since Bellinger went down last week, the Yankees have been forced to use either Paul Goldschmidt or Amed Rosario at DH or (in Goldschmidt’s case) first base against righties. But the addition of García should allow Goldschmidt to return to a part-time role in which he can focus on crushing lefties.

“I know he’s a great hitter,” José Caballero said. “Excited to see him here and what he can contribute for the team.”

Especially after trading away Cruz (who rejoined the big league bullpen Saturday, after they sent Camilo Doval to the Pirates) and Bird (who was back at Triple-A after extended struggles in the big leagues since he was acquired at last year’s deadline), the Yankees will be trying to acquire another bullpen arm or two before Monday’s deadline, along with a righty-hitting catcher to pair with Austin Wells, at the very least.

The Yankees hope Luis García Jr. will provide some much-needed help for the struggling lineup.  IMAGN IMAGES via Reuters Connect

But their biggest need was bats in general, which the arrival of García should start to address.

“It’s one of the blessings about playing for the Yankees,” Gerrit Cole said. “The organization is always pushing forward and doing their best to improve the team whenever they get the opportunity to. So as a Yankee player, it’s a beautiful position to be in because you can trust what the organization has done over the years.”

Grable, 24, represented the Yankees in the All-Star Futures Game last month and had a 2.79 ERA in 26 appearances at Double-A Somerset. Cebert, 24, was a 15th-round draft pick last summer who had a 4.90 ERA in 13 games (12 starts) at Double-A.