Details

• Brand:

  

• SKU:

  12696018

• Other Names:

  Injector

• Description:

  GM part number 12696018 is a Diesel Exhaust Fluid (DEF) Reductant Fluid Injector (also called a DEF injection nozzle). GM's catalog description is "Injector Assembly, Emissions Reduction Fluid."

  Part details

  • GM Part Number: 12696018
  • Part Type: DEF / Reductant Fluid Injector
  • Function: Sprays DEF into the exhaust stream as part of the SCR (Selective Catalytic Reduction) emissions system to reduce NOx emissions.

  Common applications

  • Chevrolet Silverado 2500 HD
  • Chevrolet Silverado 3500 HD
  • GMC Sierra 2500 HD
  • GMC Sierra 3500 HD

  Symptoms of a faulty DEF injector

  • Check Engine Light
  • DEF system warnings
  • Emissions-related fault codes
  • Excessive DEF crystallization around the injector
  • Reduced engine power or inducement warnings if SCR performance is affected

  These symptoms can also be caused by wiring, DEF quality issues, NOx sensors, or other SCR system components, so diagnosis is recommended before replacement.

  If you provide the year, make, model, engine, or last 8 digits of the VIN, I can verify the exact fitment and show where this injector is located on the vehicle.

  
  

  The GM OEM Reductant Fluid Injector (MPN: 12696018) is a genuine factory component designed to precisely deliver diesel exhaust fluid (DEF) into your vehicle's selective catalytic reduction (SCR) system for emissions compliance. This authentic General Motors part ensures optimal performance and reliability on select GM vehicles equipped with SCR technology. As a direct replacement injector, it maintains OEM quality standards for proper fit, form, and function in your diesel engine system.

  - Genuine OEM reductant fluid injector manufactured to exact GM specifications
  - OEM fitment for select GM diesel-equipped vehicles with SCR systems
  - Delivers precise DEF injection into exhaust stream for emissions reduction and engine protection
  - Direct replacement component compatible with factory SCR systems
  - Authentic General Motors part — not aftermarket or refurbished

• Condition: New

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