Chimney Replacement Instructions

What's in This Article?

How to replace a chimney (chimney cap, chimney pipe, chimney assembly & chimney-barrel gasket) on an AC or a D2 WiFIRE Traeger grill.


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Chimney Replacement Part Numbers

*At this time, Traeger chimney parts are unavailable to purchase on

  SKU Contents Compatible Grills Image
Chimney Cap SUB150
Cap All grills with a chimney KIT0008.jpeg
Chimney Pipe (Flu)
KIT0005 Pipe, Gasket, Hardware All grills with a chimney except Century 885, Fremont, Mesa 20 KIT0005.jpeg

Century 885

Chimney-Barrel Gasket



Gasket All grills with a chimney except Fremont and Mesa 20 INS145.jpeg
Chimney Assembly
(Pipe & Cap)
KIT0774 Cap, Pipe, Gasket, Hardware Fremont
Mesa 20


How to Replace Chimney Parts on a Traeger Grill

The following instructions detail how to replace a full chimney assembly including the chimney cap, pipe, and chimney-barrel gasket. Modify according to which or all parts you are replacing.

NOTE: The Fremont and Mesa 20 models do not have a chimney-barrel gasket.

Tools Needed

  • Phillips screwdriver
  • Wrench

Remove the Old Chimney Assembly


  1. Turn off your grill and make sure it's cool to the touch. 
  2. Unscrew the chimney from the chimney pipe.
  3. Open the grill lid and find the two nuts secured to the screws that hold the chimney in place. 
    Depending on your grill, the chimney may be on the left or the right side.
  4. Using a wrench to keep the nuts in place, use a Phillips screwdriver to unscrew the two chimney screws.
  5. Remove the two screws, four washers, and two nuts and set aside.
  6. Pull the chimney pipe away from the grill, and carefully remove the fiberglass chimney-barrel gasket. 
    • Depending on age and wear, the chimney-barrel gasket may come off in pieces and will not be able to be reused. 

Install a New Chimney Assembly


  1. Carefully take the new fiberglass chimney-barrel gasket and align it with the base of the chimney pipe against the chimney opening on the side of the grill.
    • Depending on your grill, the chimney may be on the left or the right side.
  2. Install the two screws, four washers, and two nuts to secure the chimney in place, keeping the screws on the grill's exterior and the nuts inside the grill barrel. 
  3. Tighten using a Phillips screwdriver and a wrench to keep the nuts from turning with the screws.
  4. Screw on the chimney cap, leaving approximately a thumb's space (¾ inch or 2cm) between the top of the chimney pipe and the bottom of the cap.

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