| Part Number | Sensors | Inlet | Outlet | Angle | Additional Info |
| BN-509A | 3/4" oxy. sensor | 5 bolt inlet | 3 bolt outlet | 70 degree angle | 10" length longest side w/bends; 2 hanger bolts by 3 bolt flange |
Measurements Required
with or w/out air; with or w/out sensor; Federal or California model vehicle; rear flange at 45 or 70 degree angle; 2 bolt or 3 bolt outlet; overall length;