This listing is for one brand new TRW exhaust valve for the Audi A8’s listed below.  These have been discontinued for a long time.  Part number is 077 109 611D.

Audi A8 3.7L V8 A/T FWD Base Sedan       1997-1999

Audi A8 4.2L V8 A/T Quattro Base Sedan   1997-1999

Reference T1-860631