GM Genuine Parts Throttle Body (Programming Required)
OE
Pack of 1

GM Genuine Parts Throttle Body (Programming Required)

GM Part #12708854

ACDelco Part #12708854

MSRP$170.40*

GM Genuine Parts Fuel Injection Throttle Bodies are designed, engineered, and tested to rigorous standards, and are backed by General Motors.

  • Maintains proper engine breathing in extreme weather conditions
  • Steady idle performance at stoplights and intersections
  • Built for daily stop-and-go city commuting

Pack of 1

About this product

GM Genuine Parts Fuel Injection Throttle Bodies are designed, engineered, and tested to rigorous standards, and are backed by General Motors. When your vehicle suffers from rough idling, unexpected stalling at intersections, or hesitation when pressing the gas pedal, a failing airflow valve is often the culprit. Serving as the primary gateway for air entering the intake manifold, these critical components regulate incoming oxygen to match fuel delivery, communicating directly with the engine computer to optimize the air-fuel mixture. Replacing a worn unit restores smooth, predictable throttle response and steady idle performance, ensuring you have consistent engine power for highway merging, heavy acceleration, and daily stop-and-go city commuting. Designed to meet rigorous specifications and validated for reliable operation in harsh weather conditions, these replacement parts help clear check engine lights tied to airflow faults and keeps your electronic fuel injection system running efficiently. GM Genuine Parts are the true OE parts installed during the production or validated by General Motors for GM vehicles.

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  • Maintains proper engine breathing in extreme weather conditions
  • Steady idle performance at stoplights and intersections
  • Built for daily stop-and-go city commuting
  • Consistent engine power during heavy acceleration
  • A critical link in the electronic fuel injection system
  • Communicates with the engine computer for precise tuning
  • Handles the demands of highway merging and passing
  • The primary valve controlling air entering the engine
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type
  • GM regularly updates production and service part designs to integrate new materials and technologies

Gasket Or Seal IncludedNo
Outlet Quantity1
Mounting Hardware IncludedYes
Bore Diameter2.56 in / 65 mm
Inlet Diameter2.76 in / 70 mm
ClassificationOE
Throttle Body TypeElectrical
Outlet TypeFlange
Fuel System Injection TypeDirect Injection
Throttle Body MaterialCast Aluminum
Throttle Body FinishNatural
Fuel Injectors IncludedNo
Throttle Body Spacer IncludedNo
Throttle Position Sensor IncludedYes
Idle Air Control Motor IncludedYes
Fuel System TypeDiesel
Inlet TypeStraight

24 Months/Unlimited Miles Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

Before purchasing and installing a fuel injection throttle body, make sure it is the correct fit for your vehicle

  • Use approved fuel for your vehicle
  • Change fuel filter at required intervals
  • Change air filter at required intervals
  • Regularly inspect fuel injection throttle bodies for signs of damage or wear and replace them if signs of damage are found

Signs of wear for fuel injection throttle bodies include but are not limited to:

  • Poor engine performance
  • Increased fuel consumption
  • Throttle butterfly plate sticking

ModelBody StyleTrimYear(s)
CorvetteZR1, ZR1X2026, 2027

Frequently Asked Questions

Yes, always consult the Vehicle Owner's manual or an expert technician before making any repairs or adjustments.

Yes, its supply is a more efficient gas flow and quicker response.

Consult the Vehicle Owner's manual for correct octane rating and fuel type.

Yes, using approved cleaner and fuel additive can help keep your throttle body operating properly. Check with a technician for the cleaner type and frequency.