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The aFe Silver Bullet throttle body spacer for 2019–2021 Toyota Corolla 2.0L uses a serrated/helix entry to create airflow turbulence before the intake, improving throttle response and reducing helix‑only whistle. CNC‑machined from 6061‑T6 billet aluminum with a black anodized finish, it installs using factory mounting locations and includes a gasket; dyno testing shows modest gains in low‑end power.
aFe Silver Bullet Throttle Body Spacer 19-21 Toyota Corolla L4 2.0L - Black
