One new Lazorlite brand relay (made in Canada), part number U16-9420. This fits:
Audi 4000 1980 - 1984 (lambda probe relay)
Audi 5000 1984 (A.C. relay) (Catalyst relay)
Audi 5000 Turbo 1980 - 1983 (lambda probe relay)
Audi Coupe 1981 - 1987 (lambda probe relay)
Audi Quattro 1982 - 1985 (lambda probe relay)