Trick Flow Cylinder Head Emission/Thermactor Plug 5.0L/5.8L

Trick Flow:


  • Change Thread Hole Size
  • Zinc Plated Steel
  • 5/8"-11 Male Thread Pattern
  • Can Plug Air Passages

Trick Flow Emission and Thermactor Plug for Most Aftermarket 5.0L and 5.8L Cylinder Heads.

Most aftermarket cylinder heads are not side specific. These thermactor plugs are designed to plug into your heads, to change the thread size to allow you to use your factory accessory drive brackets. These plugs are also used to close off any air passages in your heads.

Made from steel and then zinc plated. Features a 5/8"-11 male thread pattern.

*Sold individually, use 2 per car.

California Residents: Proposition 65 Warning

Note: This item is not CARB (California Air Resource Board) exempt and is not legal for sale or use in the state of California.

Vehicle Fitment

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