SerratedHelix Design The serratedhelix design creates air turbulence in the intake manifold. This turbulence increases the air pressure in the combustion chamber, resulting in increased performance and improved throttle response. The serratedhelix combination design also reduces intake whistle that occurs with helix - only designs (US PAT 07055513). 6061 - T6 Billet Aluminum Construction This Silver Bullet throttle body spacer is precision machined from 6061 - T6 billet aluminum for lightweight, high strength, and perfect fit and finish. It features an anodized finish. Installation Is A Snap This Silver Bullet throttle body spacer uses all factory mounting locations, making for a hassle - free installation. A supplied gasket provides a perfect seal. Fitment Note This item will work with all aFe POWER intakes systems that fit the 14 - 19 GM 1500 V8 - 6.2L platform