FCCUM Grill Smoke Stack Replacement Chimney for Pellet Grills — 3.5" Gasket, 4.5" Bolt Circle, Complete Kit

FCCUM Grill Smoke Stack is a complete replacement chimney assembly designed to restore proper draft and smoke control on many Traeger, Pit Boss, Camp Chef and other pellet grills.

When a grill’s original smokestack is damaged, missing, or inefficient, the result can be uneven heat and reduced smoke flavor. This FCCUM replacement kit gives you the parts to rebuild the chimney outlet and regain more stable airflow and longer smoke dwell time inside the cooking chamber. It’s a bolt-on solution that includes a gasket, flue pipe, cap and fasteners sized for common pellet grills.

Will this chimney fit my pellet grill?

Compatibility is broad but depends on your grill’s outlet dimensions. The FCCUM stack ships with a gasket and mounting hardware for a 3.5" diameter opening and fits a 4.5" bolt-circle for mounting. Measure your grill’s chimney hole and bolt pattern to confirm fit before installing.

• 3.5" diameter opening gasket included for sealing the flue.
• 4.5" mounting bolt circle standard for many pellet grills.
• Works with Traeger, Pit Boss, Camp Chef and similar models if measurements align.
• Tip: close the factory rear vent hole if your model requires it for proper draft.

How does the replacement stack affect temperature and smoke?

Replacing a worn or missing chimney helps regulate exhaust flow and can modestly improve temperature stability. By channeling smoke out through a controlled flue, this stack increases the time smoke remains around the food, which can enhance smoke contact without changes to your pellets or cook settings.

• Restores consistent exhaust path for more even heat distribution.
• Promotes slightly longer smoke dwell time for better smoke exposure.
• Cap and flue design help manage airflow and prevent excess draft.
• Gasket reduces leaks that otherwise affect temperature control.

What comes in the FCCUM chimney kit and how hard is installation?

The kit arrives with every piece needed to mount the chimney: a flue pipe, a cap, a gasket and the required screws, washers and nuts. Installation is straightforward for anyone comfortable with basic tools — you’ll align the gasket, bolt the flue to the grill body, then attach the cap. No special welding or modifications are required for most grills.

• Included: chimney flue, black cap, 3.5" gasket, 2 screws, 4 washers, 2 nuts.
• Basic tools needed: screwdriver, wrench and measuring tape.
• Typical install time: 15–30 minutes for most users.
• Can be adapted with DIY adjustments if your mounting hole differs slightly.

Will it withstand regular grilling conditions and heat?

The FCCUM chimney is built for outdoor cooking environments and common pellet grill temperatures. Components are designed to tolerate repeated heating cycles and exposure to smoke and grease, though longevity depends on usage and maintenance. Regular cleaning and checking fasteners will help preserve performance.

• Durable flue material suited for high-heat smoke venting.
• Gasket provides a smoke-tight seal to limit leaks and corrosion points.
• Black cap resists weather and keeps moisture out when not in use.
• Inspect periodically and replace gasket if it shows wear.

Who is this for: The FCCUM Grill Smoke Stack kit is aimed at pellet grill owners who need a direct, cost-effective replacement for a damaged or missing smokestack. It’s ideal for DIYers who want an easy bolt-on fix, owners of Traeger, Pit Boss or Camp Chef grills (and similar models) who match the 3.5" opening and 4.5" mounting pattern, and anyone looking to restore better smoke control and more consistent cooking performance without extensive modifications.