Description
Part number 443907311 is a genuine used, tested Engine ECU Control Module for Audi 80 and 100 models from the mid-1980s through to the early 1990s. As a base variant of the 443-series, this Bosch Jetronic management unit covers petrol engines of that era and represents the original factory-fitted specification for the affected models.
Operating within the Bosch L-Jetronic or KE-Jetronic system architecture, this ECU regulates fuel injection quantity, ignition timing advance, and the correction of mixture deviations identified by the lambda sensor. It balances these parameters in real time to deliver reliable cold-start performance and clean running at operating temperature.
When this ECU begins to degrade, symptoms often include an unsteady idle that hunts between high and low rpm, black or sooty exhaust emissions indicating rich running, stumbling at light throttle openings, or difficulty maintaining a stable idle after gear changes. Intermittent no-start faults are also reported on units with aged solder joints.
Sourced from a written-off Audi of the relevant era, this ECU has been functionally tested prior to despatch and matches the 443907311 OEM part number. Installation is best carried out by a specialist familiar with classic Audi electrical architecture. A 14-day return period applies to this listing.
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/
