BN-518A/BN-518B/BN-518C/BN-518D/BN-518E/BN-518F/BN-518G
| Part Number | OEM Number | Sensor | Center Bolt | Length | Additional Info |
| BN-518A | 3 3/4" center bolt | 17 5/8" | 2 bolt inlet & outlet | ||
| BN-518B | S99, S98, S93 | 4 1/4" center bolt | 17 5/8" | 2 bolt inlet & outlet | |
| BN-518C | S96, S94 | w/sensor | 32 1/2" | ||
| BN-518D | S59 | sensor on inlet | 2 bolt inlet | ||
| BN-518E | S91 | sensor on inlet | 4 bolt inlet | ||
| BN-518F | S92 | w/sensor | 3 bolt dual inlet, w/90 degree bend | ||
| BN-518G | H05 | w/out sensor | 20 1/2" | 2 bolt inlet & outlet, 3" neck |
measurements required |