BN-039 Info Page
| BN-039B1 & BN-039B2 Interchange (federal only) |
| PART# | OEM# | Front Flange | Neck Length | Sensor | Rear Bolt Position | Additional Info |
| BN-039A | 25145003 | ring | 18 | 0 | 3 | |
| BN-039B1 | 25143452 | ring | 18 | 0 | 9 | |
| BN-039B2 | 25144261 | ring | 18 | 0 | 9 | |
| BN-039C1 | 25146010 | ring | 17 | 1 | 9 | |
| BN-039C2 | 25146010 | ring | 18 | 1 | 3 | |
| BN-039C3 | 25146473, 25178577 | ring | 17 | 1 | 9 | |
| BN-039C4 | 25146473 | ring | 17 | 1 | 3 | |
| BN-039C5 | 25146473 | flat | 15.5 | 1 | 9 | Calif. Model |
| BN-039C6 | 25146473 | flat | 16.25 | 1 | 3 | |
| BN-039D1 | 25146473 | 1 | 6 bolt | |||
| BN-039D2 | 25145643 | 0 | 6 bolt | |||
| BN-039E1 | 21013084, 21013337 | 1 | 9 | |||
| BN-039E2 | 21013084, 21013337 | 1 | 3 | |||
| BN-039F | 96350079, 96282703 | 9.5 w/ hanger on pipe | 1 on right side | 1 flex | ||
| BN-039G | 96273660, 96350079 | 19.5 | 1 on left side | |||
| BN-039H | 96273660 | 11 | 1 on right side | |||
| BN-039I | 96350079 | 1 | 2 flex | |||
| BN-039J | 96553582 | flat | 12" | 1 | loafbread style body | |
| BN-039K | 96389588 | flat | 12" | NO | loafbread style body |