BN-602A/BN-602B/BN-602C/BN-602D/BN-602E
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| BN-602A/B/C | BN-602D | BN-602E |
| Part Number | Inlet/Outlet | Sensor | Additional Info |
| BN-602A | 4 bolt inlet | w/sensor | |
| BN-602B | 4 bolt inlet | w/out sensor | |
| BN-602C | 5 bolt inlet | ||
| BN-602D | 2 bolt flat flange inlet, 5 bolt flat flange out | w/out sensor | Subaru |
| BN-602E | 5 bolt flat flange inlet/2 bolt flat flange outlet | w/out sensor | Subaru |