17-19 F-250 F-350 6.7L DIESEL ECU ECM ENGINE COMPUTER HC3A-12B684-BA TESTED Climate Controls You will need to swap

17-19 F-250 F-350 6.7L DIESEL ECU ECM ENGINE COMPUTER HC3A-12B684-BA TESTED Climate Controls You will need to swapPart Number HC3A 12B684 BA 0281033295 < This is the hardware family and bosch number. Match both of these and then your mechanic can use FJDS to update the unit to the software number you need. Fitment Interchange This ecu will interchange or replace the following ecu part numbers for 17 19 Ford F 250 F 350 F 450 F 550 Super Duty 6. 7L diesel truck models with the following part numbers: HC3A 12B684 BA 0281033295 Tech Notes ECU has been tested with

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