4B0 907 551 AL --- Engine Control Module / unit for Audi A6 code APB Quattro Possible Fitments, Check Original for Match. A Dealer may be telling saying you need 4B0 997 552 EX (because this one is no longer available from them). If you buy used to save money you must do your research and find an Independent shop who uses VAG-COM equipment who can program this to your car. They ARE out there.

• Genuine Audi Factory Part for Some 1999, 2000, 2001, 2002, 2003, models
• 4B0907551AL -- DISCONTINUED and replaced by 4B0997552EX, 4B0 997 552 EX
• Please Verify Your Existing Part# as this can be found in SOME models for 1998, 1999, 2000, 2001, and 2002
• 4B0907551AL replaces 4B0907551T and 4B0907551TX

Genuine Audi Factory Part for Some 1999, 2000, 2001, 2002, 2003, modelsBOSCH