aFe Power Gas Throttle Body Spacer for Ford F-150 1997 - 2003

Serrated/Helix Design: The Serrated/Helix combination design creates intake turbulence in the combustion chamber. This turbulence breaks up the fuel which creates a more complete combustion cycle increasing horsepower, torque and improving throttle response. The Serrated/Helix combination design also reduces intake whistle that occurs with Helix only designs.6061-T6 Billet Aluminum Construction: All Silver Bullet Throttle Body Spacers are constructed from 6061-T6 billet aluminum precision machined for light weight, high strength and perfect fit and finish.Longer Intake Track: Adding a Silver Bullet Throttle Body spacer lengthens the intake track which helps increasing intake air speed increasing performance and improved throttle response.Note: Does Not Fit 2004-2010 Ford F-150 V8-4. 6L (3-Valve) Emissions Disclaimer: Some or all of the applications listed are 50-state exempt, please see D-550-11/D-550-17/D-550-43 for details.