This is a full original ECU kit for the Audi A4 B7 1.8T petrol model. The complete set includes the Bosch ME7.5 engine ECU, ignition key, immobilizer module, and ignition barrel—all factory matched and fully tested for plug-and-play installation.

Perfect for solving immobilizer faults, ECU failure, or key-related start-up problems. No coding required—just install and start the car.