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Granatelli Motor Sports
Granatelli GM LT1 / LT4 / LT5 112mm Black Billet Drive-By-Wire Throttle Body – GMTBLT112B
Granatelli GM LT1 / LT4 / LT5 112mm Black Billet Drive-By-Wire Throttle Body – GMTBLT112B
SKU:GMTBLT112B
In Stock—More than 10 available

Granatelli GM LT1 / LT4 / LT5 112mm Black Billet Drive-By-Wire Throttle Body | GMTBLT112B
Give your high-horsepower GM Gen V LT engine the airflow it needs with the Granatelli GM LT1 / LT4 / LT5 112mm Black Billet Drive-By-Wire Throttle Body. Precision CNC-machined from 6061-T6 billet aluminum with a black finish, this 112mm drive-by-wire throttle body is built for modified naturally aspirated and forced-induction combinations.
The massive 112mm bore gives modified LT1, LT4 and LT5 combinations substantially more inlet area than smaller throttle bodies, helping support serious power from supercharged, turbocharged and high-RPM builds.
112mm of Serious Airflow
Built for high-horsepower GM Gen V LT engine combinations that have outgrown the factory throttle body.
Key Features
112mm Bore
Larger throttle opening increases available airflow over factory-size throttle bodies.
6061-T6 Billet Aluminum
CNC-machined from high-grade billet aluminum for strength and precise fitment.
Drive-By-Wire Control
Electronic throttle control for smooth, responsive throttle operation.
Black Finish
Black finish for a clean, high-end look under the hood.
Street, Strip & Boost
Suited to modified naturally aspirated, supercharged and turbocharged builds. Designed to handle up to 25 psi of boost.
No Parts Swapping
Complete assembly. No need to transfer internal components from the original throttle body.
Applications
- GM Gen V LT1
- GM Gen V LT4
- GM Gen V LT5
- Also available in natural aluminum: GMTBLT112
Tuning Notice: A tune may be required after installation for proper idle quality, drivability and optimum performance.
Connector: Uses the factory-style GM 6-pin drive-by-wire connector.
Fitment Notice: Verify your intake manifold opening, bolt pattern, connector and clearance before ordering.
Why Choose Granatelli Motor Sports?
Granatelli Motor Sports has built performance parts since 1949. Our components are designed for real-world street, street/strip, race and show applications, with a focus on dependable construction and practical performance. Questions about fitment? Call us at 1-805-486-6644, Monday–Friday, 8am–5pm PST.

