A6421505372 0281014343 VIRGIN – ECU ENGINE CONTROLLER Mercedes 3.0 CDI CR4.20
The offered ECU ENGINE CONTROLLER A6421505372 with Bosch number 0281014343 (CR4.20) is a VIRGIN – clean version, prepared for reprogramming in the vehicle. The unit has been professionally cleared of immobilizer data and requires adaptation / programming after installation.
The product is dedicated to 3.0 CDI V6 (OM642) engines. The most important compatibility criterion is the matching of part numbers: A6421505372 and 0281014343. If the numbers on your controller are identical – the module will be 100% compatible, regardless of the body version.
VIRGIN version – what does it mean?
An VIRGIN (clean) controller is reset to factory state. After installation it requires programming to the vehicle using appropriate diagnostic equipment (e.g. Star Diagnosis / Xentry). Only after immobilizer adaptation will it be ready for operation.
Application (examples)
The CR4.20 controller was used, among others, in Mercedes models with the 3.0 CDI engine with displacement of 2987 cm³:
- Mercedes-Benz E-Class W211 / W212 – E280 CDI, E300 CDI, E320 CDI (approx. 2005–2012)
- Mercedes-Benz C-Class W203 / W204 – C320 CDI (approx. 2005–2011)
- Mercedes-Benz ML W164 – ML280 CDI, ML320 CDI (approx. 2005–2011)
- Mercedes-Benz GL X164 – GL320 CDI (approx. 2006–2012)
- Mercedes-Benz R-Class W251 – R280 CDI, R320 CDI
- Mercedes Sprinter 3.0 CDI (selected versions)
Note: the above list is for reference only. Different software versions may have been used in a given production year. Always compare the number A6421505372 or Bosch 0281014343 with your own module.
Q&A – A6421505372 / 0281014343
Does the ECU ENGINE CONTROLLER A6421505372 fit my vehicle?
If the number on your unit is A6421505372 or 0281014343 – the product will be fully compatible. The part number is more important than the vehicle model itself.
Does 0281014343 work without programming?
No. This is a VIRGIN version, meaning it is clean – it requires programming and immobilizer adaptation after installation.
Which engine is 0281014343 CR4.20 designed for?
The controller is designed for 3.0 CDI V6 OM642 engines with displacement of 2987 cm³.
I have a different Mercedes model but the number matches – will it work?
Yes. If the ECU ENGINE CONTROLLER number A6421505372 or Bosch 0281014343 is identical, compatibility is maintained 100%.
What does CR4.20 mean?
CR4.20 is the designation of the Bosch controller type used in Common Rail systems in 3.0 CDI engines.
