aFe Power Silver Bullet 46-33010 Ford Throttle Body Spacer<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Precision machined from 6061-T6 billet aluminum</li><li>Serrated/Helix Combination Design for optimum airflow into the combustion chamber</li><li>Eliminates annoying whistle found in helix only throttle body spacers</li><li>Includes all hardware</li><li>This product is 50-state legal (CARB E.O Number D-550-11)</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41vKmspF14L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41S03aZLWpL.jpg" noproxy>