Grassroots Performance LS/VORTEC series throttle body use the 4-bolt mount pattern. A simple proven design that increases airflow with a bigger opening, also known as "BIG MOUTH". Improved horsepower and torque from 2500rpm through redline. OEM fitment for Throttle Position Sensor (TPS) and Idle Air Control Sensor (IACS).
*Fits OEM Manifolds with 4-bolt flange
Available sizes 92mm and 102mm
Available colours are anodized black and polished.