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This Bosch engine control unit manages fuel, ignition and other core engine functions on the VW Passat B5/B5.5 2.3 VR5 AZX. It is the correct type for B5.5 models with automatic transmission, so match the OEM numbers and fitment carefully before ordering. A direct replacement is usually chosen when the original ECU has failed or communication faults are present.
This Bosch engine control unit manages fuel, ignition and other core engine functions on the VW Passat B5/B5.5 2.3 VR5 AZX. It is the correct type for B5.5 models with automatic transmission, so match the OEM numbers and fitment carefully before ordering. A direct replacement is usually chosen when the original ECU has failed or communication faults are present.
