| Part Number | Inlet/Outlet | Sensors | Length | Body Length | Additional Info |
| BN-546B | 2 bolt flare in, 2 bolt out | w/out sensor | 36" | 9 1/2" | OEM# Z503, 4H20, 24 1/2" pipe |
| Measurements Required |
| OEM#; with or w/out sensor, number of sensors, location of sensors; overall length, neck length, rear pipe length; converter round or oval; flanges flat or female; number of hangers |