New York ? A bizarre New York crime wave that leaves car owners doorless has investigators clueless.

The “Whole of the Door Gang” is swooping down on Toyotas across Queens, stunning car owners who find their vehicles with huge gaps where the back doors used to be.

Cops have investigated at least six cases of stolen doors in the last three months.

The expensive doors, which can cost up to $5,000 to replace, are nearly impossible to find at salvage yards, creating what some fear may be an emerging black market.

“It’s hard to find a used door for Camrys and Highlanders, because owners keep the cars for so long,” said Jason Martinez, a damage adjuster for Geico.

So the streets become their marketplace.

The thieves sell the doors to chop shops or unscrupulous salvage yards and repair shops. Police say some shops try to pass the doors off as new, pocketing a profit after overcharging customers.