COMPUTER MISCELLANEOUS Audi A8 (D3) Sedan 3.7 V8 40V Quattro (BFL). TypeA8 (D3) Sedan 3.7 V8 40V Quattro (BFL) (2002, 2003, 2004, 2005, 2006). PartComputer Miscellaneous. Warranty (months)12. Type Number4E0909131G/4E0909131K/4E0907181A/4E0907181AX/4E090.