Oprah Winfrey’s getting her kink on with a steamy new cable series about a sexually curious LA housewife.

TV’s touchy-feely daytime queen will get down and dirty with the HBO series, which revolves around a married woman who suddenly leaves her husband and kids to act out her secret fantasies in LA’s seamy underbelly, according to Variety.

The news comes just days after Winfrey announced she’s leaving her top-rated “Oprah Winfrey Show” in 2011 after 25 years to focus on her new cable network — and endeavors like this one, taking her far afield from her goody-goody daytime image.

The HBO series (no title yet) will be produced by Winfrey’s Harpo Productions and is being written by Erin Cressida Wilson — who penned the 2002 steamfest “Secretary,” about an S&M relationship between a lawyer (James Spader) and his secretary (Maggie Gyllenhaal).

“It’s a very erotic mystery about . . . a woman and her secret desires that are, in fact, rather pure,” Wilson told The Post yesterday.

“She acts out in pretty extraordinary ways. It’s all about an unfolding mystery.”

Wilson said the lead character, Georgia, has “something boiling up in her” when she decides to chuck her suburban existence and embrace her funky new life.

“It just happens and she splits. It may be shocking to her, but the table has been set for a long time,” said Wilson, who also wrote “Fur” (starring Nicole Kidman) and indie fave “Chloe” (Liam Neeson/Julianne Moore).

The upcoming HBO series will be “erotic,” Wilson said.

“The language I write is often erotic, so there’s no question [the HBO series] will be erotic — even when there’s no sex involved,” she said. “There’s nothing gratuitous.”

She also said there are some parallels between the HBO series and “Secretary.”

“I would say in terms of creating eroticism that is integrated into the psychology of the lead character and the story, yes, there are similarities,” she said.

“I think the woman’s sexuality and sensuality in ‘Secretary’ — both her fragility and her strength — are central to Georgia’s character [in the HBO series], as well.

“Georgia will embrace darkness with a joyful spirit.”

The series is part of Winfrey’s production deal with HBO, which also includes the miniseries “Ida Tarbell,” about the real-life muckraking journalist.

Officials at Harpo referred all calls to HBO, which had no comment yesterday.

michael.starr@nypost.com

