| Part Number | Length | Center Bolt | Air |
| BN-570A | 17" length | 4" center bolt | w/air |
| BN-570B | 19" length | 3 3/4" center bolt | w/air |
| NO NUMBER ON BODY |
|
Measurements Required |
| OEM#; length; width; flat or female flange; opening size; with or w/out sensor; with or w/out air; 1 or 2 converters on vehicle |