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The aFe Silver Bullet throttle body spacer for 2002–2009 Chevrolet Trailblazer and GMC Envoy with the 4.2L inline-six features a patented serrated/helix entry that creates airflow turbulence to increase intake air speed, boost pressure at the combustion chamber and improve throttle response while reducing helix-only whistle. CNC-machined from 6061-T6 billet aluminum with a black anodized finish, it uses factory mounting points and includes a gasket for sealing.
aFe 02-09 Chevrolet Trailblazer/ 02-09 GMC Envoy L6 4.2L Silver Bullet Throttle Body Spacer - Silver
