Granatelli LT 103mm throttle bodies are billet drive-by-wire throttle bodies for GM Gen V LT1, LT4 and LT5 engines, rated for up to 35 psi of boost and made in the USA. A larger throttle body is a common airflow upgrade once you have started on intake, cam or boost changes.
GMTBLTSPC: adapter spacer plate, needed to run a 103mm on a stock LT1 or LT4 intake
A tune is required after installation. Want a smaller or bigger option? Compare the LT 95mm and LT 112mm throttle bodies, or see all GM throttle bodies.
