BBK Header Nuts

[BIGDOGGY]

Does anyone know the size nuts that are used to connect a H-pipe or an X-pipe to BBK Short Tube Headers...? not the bolts that connect the header to the engine itself, the nuts that connect the header to a h or x pipe

 

[TIMMY2734]

pretty sure it uses a 19mm socket

 

[89CopCoupe]

The threads are a 12mm .... I don't think he's having a problem with what size the hex head is, if so

 

[TIMMY2734]

well im guessing that he needs new ones, so itll be easier to go to the store with a 19mm in hand.