Details

• Brand:

  

• SKU:

  12666026

• Other Names:

  Thermostat Gasket, Control Valve Gasket, Seal

• Description:

  GM part number 12666026 is a genuine General Motors thermostat bypass pipe gasket / control valve seal used in the cooling system of several GM 2.7L turbocharged engines. Sources describe it as a Therm Bypass Pipe Gasket and a Control Valve Seal depending on the catalog.

  Common applications include:

  • Chevrolet Silverado 1500
  • Chevrolet Colorado
  • GMC Sierra 1500
  • GMC Canyon
  • Cadillac CT4

  If you're trying to verify fitment, tell me:

  1. The year
  2. The make/model
  3. The engine size (or VIN)

  and I can check whether 12666026 is the correct part for your vehicle.

  
  

  Genuine GM Control Valve Seal MPN 12666026 is a factory OEM replacement component designed for 2.7L turbo engines in select Chevrolet Silverado and GMC Sierra trucks. This precision-engineered seal regulates hydraulic pressure within the engine's valve system, ensuring optimal performance and preventing fluid leakage. Choose authentic General Motors parts to maintain your truck's reliability and engine efficiency.

  - OEM Control Valve Seal for 2.7L turbocharged GM engines
  - Factory fitment for Chevrolet Silverado and GMC Sierra models with turbo powerplants
  - Maintains proper hydraulic pressure regulation in the valve control system
  - Direct replacement part ensures compatibility with original equipment specifications
  - Genuine General Motors OEM part—not aftermarket or remanufactured

• Condition: New
• Notes: Included with Coolant Control Valve. Included with control valve. Part cannot be reused/reinstalled.
• Applications: 2.7L.

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