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The Gates crankcase breather emission control hose routes crankcase gases for proper ventilation and emissions control on Audi S4 models. Specified for 2012–2016 S4 vehicles with the 3.0L V6, this replacement hose helps restore correct breather routing when the original crankcase hose becomes degraded or damaged.
Gates 12-16 Audi S4 V-6 3.0L Crankcase Breather Hose Emission Control Hose