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
2001-2001.5		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		06/01-08/01		Interchangable with M-Box
			AA-Box	Tiptronic		Interchangable with L-Box

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)
• 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.