The Queens man who admitted to dumping his bound ex-girlfriend in a suitcase in Connecticut has pleaded guilty to kidnapping, according to court papers.

Javier Da Silva copped Wednesday to the single charge in connection with the murder of Valerie Reyes, who was found dead inside a roadside suitcase in Greenwich on Feb. 5, 2019.

She was bound at the wrists and ankles, and died from a lack of oxygen, authorities determined.

He faces up to life behind bars at sentencing, which is currently set for May 21.

Da Silva told The Post during a jailhouse interview that Reyes died as they “fell together” off the bed during sex.

The dual citizen of Venezuela and Portugal — who was in the country illegally after overstaying his visa — claimed he tried to revive her, but when that failed he “put her in the suitcase and ran.”

He was arrested after trying to use Reyes’ ATM card to withdraw cash from her bank accounts.