{"product_id":"bmmxbi-pellet-grill-chimney-replacement-for-pit-boss-820-850-series-black-powder-coated-steel-kit-with-cap-gasket","title":"BMMXBI Pellet Grill Chimney Replacement for Pit Boss 820\/850 Series — Black Powder-Coated Steel Kit with Cap \u0026 Gasket","description":"\u003cp\u003e\u003cstrong\u003eBMMXBI Pellet Grill Chimney Replacement Parts is a complete smoker stack kit designed to replace the chimney on Pit Boss 820 and 850 series grills and compatible models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis replacement chimney assembly from BMMXBI restores proper draft and airflow for pellet grills that use the Pit Boss 820\/850 platform and many related models. Built from powder-coated steel, the kit includes the flue pipe, cap, gasket and hardware so you can swap a damaged or missing stack without hunting for individual parts. Before ordering, check your grill’s model and stack dimensions to confirm fit.\u003c\/p\u003e\n\n\u003ch3\u003eWill this chimney fit my Pit Boss 820 or 850 grill?\u003c\/h3\u003e\n\u003cp\u003eThe BMMXBI stack is engineered to match the Pit Boss 820 and 850 families and several related models such as Austin XL, PB820SP and PB850PS2. Compatibility depends on the chimney hole size and mounting pattern on your grill — models with uncommon custom stacks may not match.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for Pit Boss 820\/850 series and many PB700\/PB820\/PB850 variants\u003c\/li\u003e\n  \u003cli\u003eCompare your existing stack’s flange diameter and bolt spacing before purchase\u003c\/li\u003e\n  \u003cli\u003eIncludes gasket and hardware to fit standard Pit Boss openings\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow hard is it to install the replacement chimney?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward and typically requires only basic hand tools. The kit includes the flue pipe, a black chimney cap, a gasket, two screws, four washers and two nuts so you can complete the swap in a short session.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRemove old stack, position gasket on flange, and secure flue pipe with included screws\u003c\/li\u003e\n  \u003cli\u003eAttach chimney cap to prevent rain and reduce sparks\u003c\/li\u003e\n  \u003cli\u003eInstallation normally takes under an hour for most users\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the construction and durability features?\u003c\/h3\u003e\n\u003cp\u003eBMMXBI uses black powder-coated steel for the chimney exterior to resist rust and tolerate grill temperatures. The coating and steel body extend service life compared with thin, untreated alternatives while keeping the stack insulated from the elements.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePowder-coated steel finish for corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eHigh-temperature tolerant design suited for pellet grill exhaust\u003c\/li\u003e\n  \u003cli\u003eGasketed base to reduce leaks and improve draft stability\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill replacing the chimney affect smoke or temperature control?\u003c\/h3\u003e\n\u003cp\u003eReplacing a damaged or missing chimney helps restore consistent airflow and draft, which supports stable temperatures and predictable smoke flow. While it doesn’t change your grill’s cook settings, a properly sealed and routed chimney can improve smoke distribution and reduce hot or cold spots.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRestores balanced airflow for steadier cook temperatures\u003c\/li\u003e\n  \u003cli\u003eImproves smoke exhaust path for more consistent flavor dispersion\u003c\/li\u003e\n  \u003cli\u003eGasketed connection reduces unwanted air leaks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The BMMXBI chimney replacement kit is for Pit Boss owners and pellet-grill hobbyists who need a full replacement stack assembly for 820\/850 family grills and compatible models. It’s also useful for anyone replacing a corroded or dented chimney, or for service shops stocking common Pit Boss accessory parts. Confirm your grill model and stack measurements before buying to ensure a proper fit.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this fit all Pit Boss 820\/850 models?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It fits many Pit Boss 820\/850 family models and several PB700\/PB820\/PB850 variants; verify your stack flange size and bolt pattern first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What tools are required to install the chimney?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Basic hand tools like a screwdriver or socket wrench are usually sufficient; the kit includes screws, washers and nuts.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"BMMXBI","offers":[{"title":"Default Title","offer_id":56824971460948,"sku":"B0CRV8XG4K","price":81.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/bmmxbi-front-view-chimney-assembly.jpg?v=1786988212","url":"https:\/\/gardenluxe.co.uk\/products\/bmmxbi-pellet-grill-chimney-replacement-for-pit-boss-820-850-series-black-powder-coated-steel-kit-with-cap-gasket","provider":"Gardenluxe Uk","version":"1.0","type":"link"}