Bought this MagnaFlow 50809 for a 2006 Nissan Quest. OEM is factory bolted on 2 bolt holes. It had no holes for threaded bolts. Also, it had no room for screws on the OEM heat shield. Used for the front (next to the radiator). I had to get different screws to make it work. Finally, the picture shows the O-ring. This was without gaskets/O-rings (not required for my replacement).