• GM DBW LT1/LT4/LT5 Throttle Body 103MM Drive-By-Wire Natural Finish
  • Give Gen LT engine airflow needs Granatelli 103mm billet
  • Its 103mm opening increases airflow capacity while maintaining modern Drive-By-Wire operation
  • 2019 Chevrolet Silverado 1500 LD V8 5.3 - 323 GMTBLT4
  • Finish Compatible 2014 2024 LT 5.3L 6.2L engines GMTBLT4
  • 2025 Cadillac Escalade ESV V8 6.2 - 378 GMTBLT4
  • intake manifolds camshaft upgrades ported heads superchargers turbo systems
  • performance applications combines larger bore strong electronic throttle control
  • control precision billet construction serious naturally aspirated boosted builds
  • larger airflow path helps support modified LT engines have
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Granatelli Motor Sports

Granatelli GM LT1 / LT4 / LT5 103mm Billet Drive-By-Wire Throttle Body – GMTBLT4

Granatelli GM LT1 / LT4 / LT5 103mm Billet Drive-By-Wire Throttle Body – GMTBLT4

SKU:GMTBLT4

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Granatelli GM LT1 / LT4 / LT5 103mm Billet Drive-By-Wire Throttle Body | GMTBLT4

Give your GM Gen V LT1, LT4 or LT5 the airflow it needs with the Granatelli GM LT1 / LT4 / LT5 103mm Billet Drive-By-Wire Throttle Body. Precision CNC-machined from 6061-T6 billet aluminum with a natural aluminum finish, this 103mm drive-by-wire throttle body is built for modified naturally aspirated and forced-induction combinations.

Whether you are chasing tenths at the track or want sharper throttle response on the street, the GMTBLT4 is a bolt-on upgrade for LT builds running a high-flow intake, ported heads or boost.

103mm of Serious Airflow

Built for GM Gen V LT1, LT4 or LT5 combinations that have outgrown the factory throttle body.

Key Features

103mm 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.

Natural Aluminum Finish

Natural aluminum 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 lbs 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 black: GMTBLT4B

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.