Generations

OEM equipment

MY	Badge	Steering wheel badge	ECU	Build Date	MAF	BPVs	ESP	Transmission	F-hose	Notes
2000	[[Image:2000_s4logo.png	50px]]	[[Image:2000_s4logo.png	50px]]	A-Box	09/99-05/00	Bosch	710	no	6-speed	yes	Possibly Al uprights
		B-Box		710A	Tiptronic			no		Possibly Al uprights
2001		H-Box		06/00-09/00	Hitachi	710A	yes	6-speed	yes	Steel uprights, interchangable with M-Box but requires cluster recode
		J-Box						Tiptronic	no	Steel uprights, interchangable with L-Box but requires cluster recode
2001.5	[[Image:2001_s4logo.jpg	50px]]	[[Image:2000_s4logo.png	50px]] or [[Image:2001_s4logo.jpg		50px]]				L-Box	10/00-05/01	710B	Revised TBB, oil inlets, sport package (w/Al mirrors) avail, Avant avail
		M-Box		6-speed, updated synchros/sliders
2002		[[Image:2001_s4logo.jpg	50px]]			T-Box		06/01-07/01		Interchangable with M-Box
			AA-Box	Tiptronic		Interchangable with L-Box

Production numbers[1]

Build date	Sedan	Avant	total
2000	5647	25	5672
2001	4770	1228	5998
2002	642	198	840
Total	12,096	1451	13,547

2002 is actually really build date of 06/01 to 07/01

Notes

• http://forums.audiworld.com/s4/msgs/802094.phtml
• poll here: http://forums.audiworld.com/s4/msgs/2447926.phtml
• There is some confusion with cars near the 09/00 build mark
  1. Some are 2001, some are 2001.5 (no verification of this rumor)
  2. Some 2001.5 came with h-boxes and do not appear to have F-hoses (doubtful, probably incorrect report)
• Andy Whittaker's UK 1999 S4 seems to have a C box.
• The L and AA box information may be incorrect. Please mail me or post a comment in the talk section.
• If the OEM equipment on your car does not fit into this table and you are the original owner, please post a comment in the talk section.
• If the OEM equipment on your car does not fit into this table and you are not the original owner, it is highly likely that some of the parts have been swapped out.
• There are reports that there are 2001 cars with Bosch MAFs (and presumably pre-H box ECUs).