| Part Number | Sensor | OEM Number | Gasket | Additional Info |
| BN-621H | with sensor | 13571, 1HM131, 701HAFT | donut gasket | 3 bolt inlet, 8" rear pipe, 11" body length |
Specify the following: OEM# required; number of bolts in flange; center bolt measurement if a 3 bolt flange; number of sensors; location of sensors; flat or ring gasket; rear pipe size; size around converter body (not length)