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| BN-552C1 | BN-552C3 |
BULLETIN
| Part Number | Inlet | Outlet | Sensor |
| BN-552C1 | 5 bolt in | 3 bolt out | w/sensor |
| BN-552C2 | 6 bolt in | 3 bolt out | w/sensor |
| BN-552C3 | 6 bolt in | 3 bolt out | no sensor |
BN-552A photo with BN-552C (front converter), BN-552D (second converter), BN-552E (rear converter)