NFL's Emmanuel Sanders' $12,000 Grill!!

Xmas came early for Broncos star Emmanuel Sanders ... who just hooked himself up with a brand new DIAMOND STUDDED GRILL ... and TMZ Sports has the photo.

The WR -- who signed a fat ass new $33 MILLION contract this off-season -- decided to spend a little cash to bling out his smile ... and went straight to the grill king, Johnny Dang.

Of course, Dang is tight with Sanders' teammate Von Miller -- and has done several grillz for Von in the past. So, when Emmanuel wanted his own set -- he met Dang at Von's mansion in Colorado for the initial fitting.

The final product -- an 18k gold frame packed with 4.5 carats of VVS princess cut diamonds. It's sick.

Dang tells us the grill usually runs around $12k -- but Sanders got the friends and family discount.

It'll go perfect with ES' stacks of cash and gold chains.

Congrats!