99711324990 Secondary Air Injection Pump Check Valve for PORSCHE 911 1999-2019 PORSCHE CARRERA GT 2004-2006 99611324901

• 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: 99711324990/99611324901/99611324902/0PB131139/0PB131139A Compatible Vehicles: for   PORSCHE 911 1999-2019   for   PORSCHE CARRERA GT 2004-2006   FAQ: Q1:Are you a Manufacture Factory? Yes,We have stable quality, stable supply, and on-time delivery…