WASHINGTON – A group of 16 rebellious House Democrats — including four New Yorkers — released their long-awaited letter on Monday, saying they will oppose Nancy Pelosi as speaker.

The elected officials called Pelosi a “historic figure” who ushered in important legislative achievements.

But they also vowed not to vote for her in upcoming leadership elections.

“Democrats ran and won on a message of change,” the members wrote.

“… We promised to change the status quo, and we intend to deliver on that promise.”

Democrats Brian Higgins of upstate New York and Kathleen Rice of Long Island were among those who signed the letter.

They were joined by incoming Rep. Max Rose of Staten Island and Anthony Brindisi, who is leading incumbent GOP Rep. Claudia Tenney to represent the Utica area.

Both Rose and Brindisi campaigned on ousting Pelosi.

Pelosi, the first female House speaker in 2007, has said she is “100 percent” confident of winning the post again.

Though some members say they’re considering a challenge to Pelosi, none have stepped forward as a candidate.

Pelosi needs 218 votes to be elected speaker on Jan. 3. Democrats won at least 232 seats and may pick up a couple more when all the elections are called.

Depending on the final size of the majority, 16 “no” votes could be enough to sink Pelosi.