Description
The OEM Engine Control Unit (ECU) (Part Number: A6421506434) is a genuine Mercedes-Benz engine management module designed to control and optimize engine performance, fuel injection, ignition timing (where applicable), turbocharger control, and emissions systems.
This ECU processes data from multiple sensors to ensure efficient combustion, smooth engine operation, and compliance with emission standards. Manufactured to Mercedes-Benz factory specifications using high-quality electronic components, it offers reliable performance, exact compatibility, and long service life.
Replacement may be required due to internal electronic failure, water damage, or communication faults. Programming and coding to the vehicle’s VIN and immobilizer system are required after installation.

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