Description
OEM part number A6421501691 is a genuine <a href="/brand/mercedes-benz“>Mercedes-Benz engine control unit originally installed in the W211 E-Class, the second-generation E-Class platform produced from 2002 to 2009. Extracted from a written-off donor and assessed against original factory data, this module is ready for professional fitment. ¶ The W211 CDI engine management handled by this ECU encompasses advanced injection pressure control for common-rail diesel systems, EGR valve management, and diesel particulate filter regeneration coordination. It also interfaces with the AIRMATIC suspension system diagnostic bus on suitably equipped vehicles. ¶ Failure symptoms in W211 models include hard starting in cold conditions, black smoke from the exhaust, loss of power with active DPF fault codes, erratic cruise control behaviour, and sudden loss of turbo response. CAN-Bus communication faults may also be logged. ¶ This used unit has been tested and confirmed functional prior to dispatch. Match OEM number A6421501691 precisely to your existing ECU before ordering. Specialist installation and coding to the vehicle’s VIN by a qualified workshop is necessary following fitment.
Returns accepted only for genuine faults — faulty on arrival, not as described, or wrong part supplied — requested within 14 days, with all 3 anti-tamper stickers intact. No returns for change of mind, incorrect installation, coding/programming, or buyer compatibility errors; checking compatibility (OEM number, firmware, vehicle) is the buyer’s responsibility. Full policy: https://giantparts.eu/refund-and-returns/
