Vendors's code: A6421500972
Product code: 0281014342
Shipping costs are not included in the price.
Shipping costs are not included in the price.
express delivery 3-6 days
The shipping cost applies to this product (in the selected variant - if applicable). It may change after adding other products to the cart.
The engine control unit with part number A6421500972 (Bosch 0281014342) has been fully tested and prepared in VIRGIN mode. The module contains no data from any previous vehicle, allowing quick and hassle-free coding into your Mercedes. A perfect choice when replacing the ECU in 3.0 CDI CR4.20 models.
This is a clean Mercedes engine ECU (A6421500972 / 0281014342) in virgin condition – erased from previous data and fully programmable.
The unit can be coded directly in the vehicle using Star Diagnosis or any compatible Mercedes programmer.
Unit A6421500972 has been reset to original factory settings and awaits proper vehicle adaptation.
Recommended tools: Star Diagnosis / Xentry (DAS). You can also use compatible J2534 interfaces that work with Xentry.
2. Can I clone the data from the old ECU instead of coding?
Yes, full cloning (FLASH/EEPROM/MPC) from the old unit is possible, which often speeds up the start-up after installation.
3. Is the ECU tested before shipping?
Yes. Each unit undergoes CAN communication, power supply, and I/O line tests on a test bench, as well as functional verification.
4. Common installation mistakes – what to avoid?
Connecting plugs with ignition on, weak grounds/fuses, loose connectors, installing in areas exposed to water, and not verifying reference numbers.
5. How to confirm compatibility before purchase?
Compare A6421500972 (Mercedes) and 0281014342 (Bosch) numbers with your ECU label and make sure the vehicle has the OM642 3.0 CDI engine. If in doubt, send us a photo of the label.
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