GM Genuine Parts Passenger Side Fuel Injection Fuel Rail
OE
Pack of 1

GM Genuine Parts Passenger Side Fuel Injection Fuel Rail

GM Part #12686808

ACDelco Part #12686808

MSRP$438.64*

ACDelco GM Original Equipment Fuel Injector Rails are designed, engineered, and tested to rigorous standards, and are backed by General Motors.

  • Smooth throttle response
  • Easy cold starting
  • Excellent  fuel economy

Pack of 1

About this product

ACDelco GM Original Equipment Fuel Injector Rails are designed, engineered, and tested to rigorous standards, and are backed by General Motors. Fuel rail is connected to the injectors that are mounted just above the intake manifold on an engine. This rail feeds the injectors to supply fuel into the combustion chamber to be mixed with air for excellent combustion. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional.

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  • Smooth throttle response
  • Easy cold starting
  • Excellent  fuel economy
  • Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
  • ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors.
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies

Product Specifications

Gasket Or Seal IncludedNo
ColorGray
MaterialAluminum
Fittings IncludedNo
Length18.75in
ClassificationOE
Fuel Injector Quantity4
Fuel System TypeGas
Fitting Quantity1
Fuel Injectors IncludedNo
Fuel Injection TypeMulti Port

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.

Good Maintenance Practices:

  • Before purchasing and installing a fuel injector rail, make sure it is the correct fit for your vehicle
  • Run recommended octane fuel for your vehicle
  • Have fuel pressure checked if engine performance decreases
  • Make sure fuel rail is properly seated or leaks may occur
  • Regularly inspect fuel injector rail for signs of damage or wear, and replace them if signs of damage are found

Signs of wear for fuel injector rails include but are not limited to:

  • Poor engine performance
  • Fuel odor in engine compartment
  • Signs of leaks at fuel rail

ModelBody StyleTrimYear(s)
Silverado 2500 HD2017, 2018, 2019, 2020, 2021, 2022, 2023
Silverado 3500 HD2017, 2018, 2019, 2020, 2021, 2022, 2023
Silverado 4500 HD2019, 2020, 2021, 2022, 2023
Silverado 5500 HD2019, 2020, 2021, 2022, 2023
Silverado 6500 HD2019, 2020, 2021, 2022, 2023

Frequently Asked Questions

Yes. Always consult the Vehicle Owner’s manual or an expert technician before making any repairs or adjustments.

Yes, the pressure changes the injector spray patterns.

Yes, use recommended cleaner for proper operation of the system.

Yes, it connects with seals and o rings if not properly seated leaks may occur.