13-20 GM LT1/LT4/LT5 Drive-By-Wire 103mm Throttle Body - Natural - Granatelli Motor Sports

Give your Gen V LT engine the airflow it needs with the Granatelli 103mm billet Drive-By-Wire throttle body. Built for LT1, LT4 and LT5 performance applications, it combines a larger bore, strong electronic throttle control and precision billet construction for serious naturally aspirated and boosted builds.

The Granatelli GMTBLT4 103mm DBW Throttle Body is CNC-machined from 6061-T6 billet aluminum and uses a factory-style GM 6-pin electronic connector. Its 103mm opening increases airflow capacity while maintaining modern Drive-By-Wire operation.

103MM AIRFLOW FOR GEN V LT PERFORMANCE.

LT1 • LT4 • LT5 • BOOST-READY

A larger airflow path helps support modified LT engines that have outgrown the factory throttle body.

Key Features

• 103mm throttle bore for increased airflow
• Designed for compatible GM LT1, LT4 & LT5 engines
• Electronic Drive-By-Wire operation
• Factory-style GM 6-pin connector
• CNC-machined 6061-T6 billet aluminum
• Complete electronic throttle-body assembly
• Designed for naturally aspirated, supercharged and turbocharged applications
• Suitable for high-performance street and race builds
• No transfer of factory throttle-body electronics required
• Made in the USA

More Airflow for LT1, LT4 & LT5 Builds

The larger 103mm throttle opening helps reduce inlet restriction on modified Gen V LT engines. It is an excellent supporting upgrade for high-flow intake manifolds, camshaft upgrades, ported heads, superchargers and turbo systems where increased airflow becomes critical.

Compatible GM Gen V Applications

Important Fitment Notice: Verify your GM 6-pin DBW connector, intake-manifold bolt pattern, throttle opening and available clearance before ordering.

Factory Manifold / Non-Ported Supercharger: Granatelli specifies that the GMTBLTSPC spacer/adapter is required when installing this 103mm throttle body on a factory manifold or compatible non-ported supercharger inlet.

Tuning Notice: A tune may be required for optimum throttle response, drivability and performance after installation.