aFe Silver Bullet Throttle Body Spacer (46-38008) boosts airflow and throttle response for 2010–2012 Toyota 4Runner and FJ Cruiser with 4.0L V6 engines. Precision-machined from durable T-6061 billet aluminum, this spacer features a patented serrated/helix design that creates air turbulence at the manifold to enhance combustion efficiency while eliminating the whistle common in helix-only spacers. Installation is quick and simple with included gaskets and hardware, making this an easy performance upgrade that delivers noticeable improvements in throttle feel and fuel efficiency.
Key Features :
Designed for 2010–2012 Toyota 4Runner and FJ Cruiser with V6 4.0L engines
Serrated/helix design increases air turbulence and intake velocity
Improves throttle response, torque, and fuel efficiency
Eliminates whistle noise associated with standard helix-only designs
CNC-machined from T-6061 billet aluminum for durability and precise fit
Includes all necessary gaskets and hardware for easy installation
50-state legal under CARB EO# D-550-42
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