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The aFe Silver Bullet throttle body spacer for 2021–2024 Lexus IS350 3.5L is a CNC-machined 6061-T6 billet aluminum spacer that mounts using all factory locations. Its serrated/helix entry design creates controlled intake turbulence to improve fuel atomization, aiming to enhance throttle response and reduce whistle common to some helix-only spacers. The kit installs without altering factory mounting points for a straightforward fit.
aFe 21-24 Lexus IS350 3.5L V6 Silver Bullet Throttle Body Spacer
