The Granatelli Motorsports 103mm Cast Aluminum Drive-By-Wire Throttle Body is engineered for LS enthusiasts looking to maximize airflow without sacrificing factory-style fitment. Featuring a precision-machined cast aluminum housing and an oversized 103mm throttle opening, this performance upgrade delivers the airflow needed to support high-horsepower naturally aspirated and forced induction combinations.

Designed as a direct replacement for the factory throttle body, installation is simple with no need to swap over motors or internal components. It connects using the factory-style late-model GM 6-pin connector and is compatible with both OEM and aftermarket intake manifolds, making it an excellent choice for a wide range of LS engine builds.

At the heart of the throttle body is Granatelli’s high-torque electronic motor and proprietary throttle blade design. Built to withstand up to 25 PSI of boost in both draw-through and blow-through configurations, it helps prevent the throttle blade from being forced closed under heavy boost—making it especially well-suited for TVS, Whipple, Roots-style, and other high-performance supercharger systems.

The oversized 103mm bore significantly increases airflow over the factory throttle body, helping improve engine breathing throughout the RPM range while delivering quicker throttle response and smoother acceleration.

Whether you’re upgrading a street-driven LS build or finishing a high-horsepower forced induction combination, the Granatelli Motorsports 103mm Cast Aluminum DBW Throttle Body offers the airflow capacity, durability, and OEM-style integration needed to support your performance goals.

Note: A custom ECU tune may be required to achieve proper throttle calibration and maximum performance after installation.