Name: DONGMAO Audi S4 4.2 (2009-2012) Electric Valve Upgrade Stainless Steel Cat-Back
Brand: DONGMAO

Dongmao Exhaust

DONGMAO Audi S4 4.2 (2009-2012) Electric Valve Upgrade Stainless Steel Cat-Back

Mid-Tail Cat-Back Exhaust

Make	Audi
Model	S4 4.2
Model year	2009
Type	Mid-Tail Cat-Back Exhaust
Muffler	Not applicable
Valve	Non-valved
Outlets	Per drawing
Tube diameter	Per drawing
Material	T304 Stainless

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Price on request. MOQ 1 unit for a trial order; OEM and private label welcome. Reply within 12 hours.

Overview

2009 Audi S4 4.2 built by Dongmao as a direct-fit exhaust system. Every unit is assembled on a platform-specific jig, so flange angles, hanger positions and tip alignment repeat from the first unit of a batch to the last.

Tube work is T304 Stainless with mandrel bends throughout. Welds are back-purged TIG, inside and outside, then checked for penetration before the part moves to finishing.