Granatelli Motor Sports GMTBLT4B 103mm Billet Throttle Body for GM LT1/LT4/LT5

The Granatelli Motor Sports GMTBLT4B is a high-performance 103mm billet aluminum throttle body designed specifically for GM LT-series engines including LT1, LT4, and LT5 platforms. This drive-by-wire (DBW) throttle body features a larger 103mm bore compared to the stock unit, allowing for increased airflow and improved throttle response.

Key Features:

• 103mm bore diameter for maximum airflow
• CNC-machined billet aluminum construction for durability and precision
• Black anodized finish for corrosion resistance and appearance
• Electronic drive-by-wire design maintains OEM functionality
• Direct bolt-on replacement for LT1, LT4, and LT5 engines
• Improved throttle response and horsepower potential

This throttle body is precision-engineered to provide a significant upgrade over the factory unit while maintaining full compatibility with the vehicle's electronic throttle control system. The larger bore opening reduces airflow restriction, making it an ideal upgrade for modified engines or those seeking maximum performance from their LT-platform vehicle.