Original quality ventilation duct OE 06C103217C is precisely produced for Audi A4 and S4 series vehicles, with all pipe diameters, connector angles and fixed clip positions strictly following OEM factory standards to enable direct installation without pipeline cutting or bending during crankcase ventilation system overhaul. The ventilation duct adopts multi-layer reinforced EPDM rubber with internal fiber braided layers, delivering outstanding resistance to high under-hood temperatures, engine oil vapor and corrosive blow-by gas. It maintains stable structural performance under frequent temperature alternations and long-term engine vibration, avoiding hardening, cracking and gas leakage issues commonly seen on aging original ducts. Damaged ventilation ducts break the normal crankcase pressure balance, leading to excessive engine oil burning, heavy carbon accumulation inside intake manifolds, rough unstable idle speed, increased fuel consumption and illuminated engine malfunction warning lights. Every finished ventilation duct undergoes air tightness durability testing, high-low temperature cyclic aging inspection and vibration resistance calibration complying with OEM quality criteria to guarantee uniform reliable performance across all batches. We provide one-stop bulk procurement services for global Audi professional repair shops and cross-border auto parts wholesalers, holding adequate spot inventory all year round with flexible minimum order quantity and comprehensive long-term after-sales warranty to satisfy continuous large-volume supply demands of overseas merchants.


