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MagnaFlow OEM manifold catalytic converter 51143 is a Federal/EPA‑compliant replacement for 2007–2011 Audi A6 Quattro 4.2L and 2007–2010 Audi A8 Quattro 4.2L applications. It reproduces OE geometry with mandrel‑bent tubing and high‑strength stainless steel for corrosion resistance and service life. Included gaskets and hardware help ensure a proper seal and allow installation without cutting or welding while meeting emissions requirements.
MagnaFlow Direct Fit Catalytic Converter 07-10 Audi A6/A8 4.2L
