aFe POWER Silver Bullet Throttle Body Spacer, 46-33004, for Ford

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 Emissions Disclaimer: Some or all of the applications listed are 50-state exempt, please see CARB EO# D-550-11/D-550-17 for details. Ford Ranger/Explorer / Mazda B4000 / Mercury Mountaineer 90-01 V6-4.0L.

Silver Bullet throttle body spacers create turbulence in the air flow at the point just prior to entry of the engine - increasing performance, as well as improving throttle response and fuel efficiency. Constructed from Durable 6061-T6 Billet Aluminum Unique Serrated/Helix Entry Design Creates Turbulence and Eliminates Whistle Sound Increases Air Intake Speed, Improving Performance & Throttle Response