Breather hose on back of valve cover, common boost leak area, the breather tube is a part of the PCV system in your vehicle. The breather tube connects the crankcase to a clean source of fresh air. Usually, clean air from the air cleaner flows into this tube and into the engine. If your breather tube is cracked or damaged, be sure to replace it as soon as possible to restore perfect functionality to your PCV. Part number: 06D103213G
Fits A4 2.0T
- Brand: Audi
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