Former Mets second-baseman Wally Backman was arrested on Long Island for allegedly shoving his girlfriend into a wall Friday morning and stopping her from calling cops, officials said.

Backman, who was part of the 1986 World Series champion Mets and currently manages the Long Island Ducks minor-league team, was charged with harassment and criminal mischief, police said.

The woman claimed Backman pushed her into a wall and twisted her hand at her Riverhead home, court officials confirmed. He also allegedly grabbed her cellphone trying to prevent her from calling police. The woman suffered a cut that required medical attention.

Backman, 59, was released without bail following his arraignment in Riverhead court. He’s due back in court Sept. 17.

His rap sheet includes a 2001 bust for domestic abuse involving his second wife and her pal and drunken driving a year earlier, according to prior reports. In those cases, he was ordered to complete courses in alcohol counseling and anger management.

His first wife reportedly filed a restraining order against him in 1995, claiming he hit her and threatened to do it again.

Backman’s criminal and legal woes — including filing for bankruptcy in 2003 — cost him a gig as manager of the Arizona Diamondbacks just four days ­after his hiring in 2004.

The team claimed Backman never disclosed his checkered past — and said it learned of his record only after reading news reports. His two-year contract was worth $1 million.

After Arizona ditched him, Backman, who played with the Mets from 1980 to 1988 during a 14-year major-league career, spent years managing in the minors. From 2010 to 2016, he managed Mets-affiliated teams, including the Brooklyn Cyclones and Las Vegas, where he was named Pacific Coast League manager of the year in 2014.

Backman was canned from Las Vegas amid his rocky relationship with then-Mets general manager Sandy Alderson. Backman has maintained he resigned.

Backman also lost out on the Mets’ managing job in 2011 to Terry Collins and was passed over for other major-league coaching jobs with the Mets.

The Ducks opened a home series against the Somerset Patriots Friday night with Backman in the dugout.

“We are aware of the August 30 alleged incident involving manager Wally Backman,” the Ducks said in a statement. “We have spoken with Wally and understand he categorically denies all charges against him. Wally will continue as manager and neither he nor the Long Island Ducks will comment further on this pending legal matter.”

Backman, who didn’t return a message seeking comment, is not the only 1986 Met who has been in trouble recently.

Last month, he weighed in on Dwight Gooden’s arrest for alleged cocaine possession and DUI. “It’s almost like you — I don’t know if grow up is the right word,” Backman told The Post at the time. “It becomes a sense that things have got to change.”