AFE Tacoma Silver Bullet Throttle Body Spacer 46 38002 (05 15 4.0L aFe Silver Bullet Throttle Body Spacer Installed on 2015 F150 3.5L aFe Silver Bullet Throttle Body Spacers Orange ??? Morizo Motorsports Silver Bullet Throttle Body Spacer Review at Amber Polk blog aFe Power 46 33004 AFE Silver Bullet Throttle Body Spacer Kit (91 01. 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 Tract: Adding a Silver Bullet Throttle Body spacer lengthens the intake tract which helps increasing intake air speed increasing performance and improved throttle response. Installation Is A Snap: This Silver Bullet throttle body spacer uses all factory mounting locations providing stability and a hassle free installation. 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. 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. Dyno Proven Gains up to +8 HP & +12 Lbs. x Ft. TQ 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 2014 2023 Chevrolet Silverado 1500 Gas V8 5. 3L 2019 2019 Chevrolet Silverado 1500 LD Gas V8 5. 3L 2015 2023 Chevrolet Suburban Gas V8 5. 3L 2015 2023 Chevrolet Tahoe Gas V8 5. 3L 2014 2023 GMC Sierra 1500 Gas V8 5. 3L 2019 2019 GMC Sierra 1500 Limited Gas V8 5. 3L 2015 2023 GMC Yukon Gas V8 5. 3L 2015 2023 GMC Yukon XL Gas V8 5. 3L