When your LS-powered build demands more airflow than the factory throttle body can provide, the Granatelli Motorsports 103mm Drive-By-Wire Throttle Body delivers the performance to match. Designed specifically for GM LS drive-by-wire applications, this oversized 103mm throttle body helps eliminate intake restrictions while improving throttle response, airflow, and overall engine performance.

Precision CNC machined from aircraft-grade 6061-T6 billet aluminum, every throttle body is built for durability and consistent performance under demanding conditions. Whether you’re running a naturally aspirated stroker, a centrifugal supercharger, or a high-boost TVS or Whipple setup, the Granatelli throttle body is engineered to keep airflow moving efficiently throughout the entire RPM range.

Unlike many oversized throttle bodies, Granatelli equips this unit with a powerful electronic motor and proprietary throttle blade design capable of resisting throttle closure under high boost conditions. Rated for applications producing up to 25 PSI of boost in both draw-through and blow-through configurations, it’s an excellent choice for serious street and race builds alike.

Installation is straightforward thanks to its direct replacement design. The throttle body bolts directly in place of the factory unit, requires no parts to be swapped over, and is compatible with both OEM and aftermarket intake manifolds while utilizing the factory-style late-model GM 6-pin connector. Depending on your combination, an ECU tune may be required to achieve optimal performance.

Whether you’re chasing more horsepower, improved throttle response, or preparing your LS engine for forced induction, the Granatelli Motorsports 103mm DBW Throttle Body is built to support your performance goals.