Catalytic Converter
Where can a replacement be had and approx how much$ - 99 A6 Avant 5V 2.8 Quattro.
OEM & aftermarket.
Will an aftermarket bolt up or does it need to be welded due to the pressure by the cat?
OEM & aftermarket.
Will an aftermarket bolt up or does it need to be welded due to the pressure by the cat?
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