Buy 2004 Audi A6 Catalytic Converter. 4.2 LITER V8, 300 hp. A6/S6; Right; 2.7L; 4.2L. EXHAUST SYSTEM EXHAUST, MANIFOLD, Mnfd - OEM Audi Part # 4B3254550GX (4B3-254-550-GX, 4B3253058BX)

Converter.
Catalytic Converter. and pipe. Catalyst. Catalytic cnvrtr. Mnfd w/. Pre.

Catalytic Converter

Fits A6, S6

4.2 LITER V8, 300 hp. A6/S6; Right; 2.7L; 4.2L.