Blow off valves and wastegates contribute to the efficiency, reliability, and performance of turbocharged engines in the Ford Fiesta ST. They also enhance the throttle response and overall driving experience. The blow off valve releases excess boost pressure that builds up when the throttle is closed, preventing the pressurized air from damaging the turbocharger. The wastegate regulates the amount of exhaust gas flowing into the turbine of the turbocharger, controlling the boost pressure.

To keep your Fiesta ST running efficiently, check out our selection of aftermarket blow off valves and wastegates specific to your Fiesta ST’s year. Replacing your factory blow off valve and wastegate with our aftermarket options will give you more stable boost control and a better driving experience in your Fiesta ST.