Increased Horsepower. The AFE Silver Bullet Throttle Body Spacer is effective in increasing horsepower, torque, and fuel mileage in your Ford Mustang GT. It was designed to optimize air flow through the manifold and into the intake with augmented air capacity. This spacer will deliver excellent performance value for your Mustang.Quality and Design. Only the highest quality 6061-T6 billet aluminum is used to manufacture this spacer. The innovative serrated helix entry increases manifold air flow. It is effective at removing the irritating whistling that is common in other helix throttle spacers.Simple Installation. AFE designed this spacer to easily install in the OEM mounting locations in your Mustang. You will not need to complete any modifications. All required hardware is included.Limited Warranty. This throttle body spacer is covered by a limited warranty which covers structural defects. Review the warranty details to find out what limitations apply.Application. The AFE Silver Bullet Throttle Body Spacer is designed to fit all 2005-2010 Ford Mustang GT models. This throttle body spacer has a CARB E.O. Number of D-550-11/D-550-17 and is street legal in 50 states.