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The aFe Silver Bullet throttle body spacer for Jeep Wrangler (YJ/TJ) 1991–2006 with the 4.0L engine creates intake turbulence via a serrated/helix design to increase throttle response, torque and horsepower while eliminating the common whistle from helix-only spacers. Machined from T‑6061 billet aluminum for strength and finish, it increases air volume and is supported by a two‑year limited warranty when used with compatible aFe intakes.
aFe Silver Bullet Throttle Body Spacers TBS Jeep Wrangler (TJ YJ) 91-06 4.0L
