Secondary Air Ventilation Injection Check Valve for AUDI TT VOLKSWAGEN GOLF JETTA 06A131102 06A131102A 06A131102F

• How does a check valve work? A car's check valve is like a "one-way switch": When fluid (air/exhaust gas) flows forward, the pressure pushes open the internal valve flap/reed, letting the fluid pass through smoothly. Once the fluid tries to flow in reverse, the reverse pressure shoves the valve flap back to its sealing position, and the valve closes automatically to block the backflow — this prevents equipment damage, pressure surges, or exhaust gas abnormalities. Features  •   Automatic on-off, One-way conduction ,High adaptability Benefits  •   Reduce the risk of damage to pipelines/engine components •   No complex electrical control components and low failure rate •   Aid in optimizing engine exhaust/intake efficiency  • O.E.M Replace: 06A131102/06A131102A/06A131102F/06A131102H Compatible Vehicles:   Make Model Year AUDI TT 2000-2006 VOLKSWAGEN GOLF 2003-2006 VOLKSWAGEN JETTA 2000-2005 FAQ: Q1:Are you a Manufacture Factory? Yes,We have stable quality, stable supply,…