Granatelli
Granatelli LT1/LT4/LT5 Drive-By-Wire Billet Throttle Body Black GMTBLT4B
Granatelli LT1/LT4/LT5 Drive-By-Wire Billet Throttle Body Black GMTBLT4B
Part number: 8YDF9
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- Free fitment check before you order
Granatelli LT1/LT4/LT5 Drive-By-Wire Billet Throttle Body Black GMTBLT4B. Highlights include granatelli 103mm Throttle Body – Black (DBW) and fits Cadillac, GMC, and Chevrolet. Cracked plastic manifolds and leaking gaskets cause vacuum leaks, rough idle and lean codes.
Key features
- Granatelli 103mm Throttle Body – Black (DBW)
- GM DBW LT1/LT4/LT5 Throttle Body – 103MM Drive-By-Wire – Black Finish Compatible with all 2014–2024 LT 5.3L & 6.2L engines
- Fits Cadillac, GMC, and Chevrolet
- CNC-machined from billet aluminum for increased airflow, quicker throttle response, and support for up to 25 lbs of boost
- Works with factory & aftermarket intakes
- Uses GM 6-pin connector
- Quick bolt-on install – no parts to swap
- Granatelli Motorsports GMTBLT4B 103mm Drive-By-Wire Throttle Body – Black Finish
Specifications
- Brand: Granatelli
- Part type: Intake manifold
- Increased Airflow: 103 mm
- Durable Construction: CNC-machined from high-grade 6061-T6 billet aluminum
- Weight: 25 lbs
- Connector Type: Requires late-model GM 6-pin connector
- Item #: GMTBLT4B
Fitment
- 2025 Cadillac Escalade V8
OE and interchange numbers
802735039177
What it does
The intake manifold carries air from the throttle body to each cylinder. Air and fuel parts decide how well the engine breathes and how cleanly it runs, so the right part restores smooth running and can support more power on a modified engine.
Installation & tips
- Fit new intake gaskets and torque the bolts in sequence to avoid vacuum leaks.
- Intake manifold gaskets: Always new.
- Vacuum hoses: Old hoses crack when disturbed.
- Put the new part next to the old one and compare the shape, mounting points and connections before you install it.
- Work on a cool engine with the vehicle secured, and use a service manual for your vehicle for torque specs and procedures.
FAQ
Can I install it myself?
Many owners do this job at home with basic tools and a service manual for their vehicle. If you are not sure, have it fitted by a qualified mechanic.
What should I check before ordering?
Compare the part number, specifications and fitment on this page with your vehicle and with the part you are replacing.
Before you order
- Measure the part you are replacing and compare it with the specifications above.

Granatelli intake manifold: what to know
Cracked plastic manifolds and leaking gaskets cause vacuum leaks, rough idle and lean codes.
Fitment notes
- Specs, lead time and warranty come from Granatelli and can change. The details above this guide are the latest we have.
Not sure it fits? Tell us exactly what you drive and we'll confirm fitment first. It's free and saves a return.
Ask about fitmentWhat else to plan for
- Intake manifold gaskets. Always new.
- Vacuum hoses. Old hoses crack when disturbed.
More for your car: Throttle Bodies · All Intake Manifolds · Fuel & air intake
Questions about intake manifold
Will this fit my car?
What are signs of an intake leak?
Where do specs and warranty details come from?
Questions & answers
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