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The aFe Silver Bullet throttle body spacer for 2011–2022 Toyota Corolla L4 1.8L uses a serrated/helix entry design to create intake airflow turbulence just before the combustion chamber. That turbulence helps break up fuel for a more complete burn while reducing helix-only intake whistle. Machined from billet aluminum and using factory mounting locations, the spacer installs without modification and aims to improve throttle response.
aFe 11-22 Toyota Corolla Silver Bullet Throttle Body Spacer
