{"product_id":"fan-housing-020t-020-ms200-ms200t","title":"Fan Housing 020T, 020, MS200, MS200T","description":"\u003ch1\u003eSTIHL Fan Housing for MS 200, MS 200 T, 020 and 020 T Chainsaws - 1129 080 1806\u003c\/h1\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eSTIHL Fan Housing\u003c\/strong\u003e (part number \u003cstrong\u003e1129 080 1806\u003c\/strong\u003e) is a genuine OEM moulded plastic cooling shroud for the \u003cstrong\u003eSTIHL MS 200\u003c\/strong\u003e, \u003cstrong\u003eMS 200 T\u003c\/strong\u003e, \u003cstrong\u003e020\u003c\/strong\u003e and \u003cstrong\u003e020 T\u003c\/strong\u003e chainsaws. The fan housing surrounds the flywheel and directs cooling air across the cylinder and associated engine components during operation, maintaining correct engine temperature and helping prevent overheating under sustained cutting loads. It also provides mechanical protection around the flywheel and ignition area, shielding components from sawdust, wood chips and accidental contact. A direct replacement for cracked, warped, impact-damaged or missing housings, it aligns with the original factory mounting points for a precise, rattle-free fit. Available from Gustharts, an authorised STIHL dealer with UK stock ready to ship.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThis is the fan housing shell only — part 1129 080 1806. It does not include the rewind starter assembly.\u003c\/strong\u003e If you require the complete fan housing with rewind starter, the correct part is \u003cstrong\u003e1129 080 2105\u003c\/strong\u003e. Always confirm which component you need before ordering. Check your machine's model and serial number against the compatibility list and contact Gustharts if you need confirmation before purchasing.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenuine STIHL OEM fan housing\u003c\/strong\u003e — manufactured to original specification for correct fit, airflow geometry and mounting alignment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart number 1129 080 1806\u003c\/strong\u003e — also referenced as 1129-080-1806 and 11290801806 across STIHL documentation and ordering systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHousing shell only\u003c\/strong\u003e — does not include the rewind starter assembly; for the complete unit see part 1129 080 2105\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirects cooling airflow across the cylinder\u003c\/strong\u003e — maintains correct engine operating temperature under sustained full-load cutting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtects flywheel and ignition area\u003c\/strong\u003e — shields components from sawdust, chips and accidental contact during cutting work\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable impact-resistant moulded plastic\u003c\/strong\u003e — built to withstand vibration, oil and fuel exposure, and outdoor working conditions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorrect hole spacing and moulded guides\u003c\/strong\u003e — aligns with original factory mounting points for accurate, stable fitment\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFits MS 200, MS 200 T, 020 and 020 T\u003c\/strong\u003e — covers both top-handle arborist and rear-handle variants in this STIHL platform\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specification\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse; text-align:left; border:1px solid #ddd;\"\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003cth style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003eBrand\u003c\/th\u003e\n        \u003ctd style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003eSTIHL\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003eProduct Type\u003c\/th\u003e\n        \u003ctd style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003eFan Housing \/ Cooling Shroud\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003eManufacturer Part Number\u003c\/th\u003e\n        \u003ctd style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003e1129 080 1806\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003eAlternate Part Number Formats\u003c\/th\u003e\n        \u003ctd style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003e1129-080-1806, 11290801806\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003eMaterial\u003c\/th\u003e\n        \u003ctd style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003eImpact-resistant moulded plastic\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003eScope of Supply\u003c\/th\u003e\n        \u003ctd style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003eFan housing shell only. Rewind starter assembly not included (see part 1129 080 2105 for complete unit).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003eCompatible Models\u003c\/th\u003e\n        \u003ctd style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003eSTIHL MS 200, MS 200 T, 020, 020 T\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003cth style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003ePart Type\u003c\/th\u003e\n        \u003ctd style=\"border:1px solid #ddd; padding:10px; text-align:left;\"\u003eGenuine OEM Replacement Part\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFits Models\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eSTIHL MS 200\u003c\/li\u003e\n  \u003cli\u003eSTIHL MS 200 T\u003c\/li\u003e\n  \u003cli\u003eSTIHL 020\u003c\/li\u003e\n  \u003cli\u003eSTIHL 020 T\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy the Fan Housing Matters - and Why Fit Genuine STIHL?\u003c\/h2\u003e\n\u003cp\u003eThe fan housing does more than cosmetic work. On a small-displacement two-stroke engine like the MS 200 range — running at high RPM under sustained arborist and grounds maintenance loads — the cooling airflow path is fundamental to engine temperature management. A cracked, warped or missing housing breaks the designed airflow circuit, allowing hot air to recirculate around the cylinder rather than being expelled, increasing the risk of overheating and accelerating piston and cylinder wear. In a top-handle arborist saw like the MS 200 T, where the tool is regularly used in varied orientations at height, consistent cooling across all cutting positions is particularly important.\u003c\/p\u003e\n\u003cp\u003eAftermarket fan housings for the MS 200 platform are widely available, but the internal geometry of the housing — the rib profiles, vent apertures and sealing surfaces that direct airflow — are closely matched to the flywheel fan blade profile and cylinder fin arrangement. Dimensional variation in an aftermarket moulding can reduce cooling efficiency without producing any immediate visible symptom, only manifesting as premature wear over sustained use. STIHL manufactures genuine OEM housings to match the original airflow specification, ensuring the designed cooling performance is maintained for the service life of the part.\u003c\/p\u003e\n\n\u003ch2\u003eAlso Known As\u003c\/h2\u003e\n\u003cp\u003eThe STIHL fan housing is also referred to as a \u003cstrong\u003ecooling shroud\u003c\/strong\u003e, blower shroud, air shroud, flywheel cover, fan cover, engine side cover and cooling cover. In some workshop contexts it is also called a \u003cstrong\u003estarter housing\u003c\/strong\u003e or recoil cover — note that these terms sometimes refer to the complete fan housing and rewind starter assembly (part 1129 080 2105) rather than the housing shell alone (this part, 1129 080 1806). For correct identification when ordering, always use STIHL part number \u003cstrong\u003e1129 080 1806\u003c\/strong\u003e and confirm whether you require the housing only or the complete starter assembly.\u003c\/p\u003e\n\n\u003ch2\u003eOften Replaced Alongside\u003c\/h2\u003e\n\u003cp\u003eWhen replacing the fan housing, inspect the following components at the same time — these are located in the same area and are commonly worn or damaged alongside a failed housing:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/collections\/stihl-spare-parts\"\u003eRewind spring (1129 190 0601)\u003c\/a\u003e — inspect for fatigue or breakage when the fan housing is removed; standard rewind starter service item for the MS 200 range\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/collections\/stihl-spare-parts\"\u003eFan housing with rewind starter complete assembly (1129 080 2105)\u003c\/a\u003e — if the rewind starter mechanism is also damaged, the complete unit may be the more practical replacement\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/collections\/stihl-spare-parts\"\u003eSpark plug (NGK BPMR7A)\u003c\/a\u003e — replace at standard service intervals or whenever ignition components are disturbed\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eExplore More\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/stihl-spare-parts\"\u003eSTIHL Spare Parts\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/pages\/stihl-parts\"\u003eSTIHL Parts Finder\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/pages\/stihl-machinery\"\u003eSTIHL Machinery\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/collections\/sharpening-maintenance-tools\"\u003eSharpening \u0026amp; Maintenance Tools\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFAQs\u003c\/h2\u003e\n\n\u003ch3\u003eIs this the complete fan housing and rewind starter assembly?\u003c\/h3\u003e\n\u003cp\u003eNo. Part 1129 080 1806 is the fan housing shell only. If you require the complete fan housing with rewind starter included, the correct part is 1129 080 2105.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is the part number for this STIHL fan housing?\u003c\/h3\u003e\n\u003cp\u003eThe manufacturer part number is 1129 080 1806, also formatted as 1129-080-1806 and 11290801806.\u003c\/p\u003e\n\n\u003ch3\u003eWhich STIHL models does this fan housing fit?\u003c\/h3\u003e\n\u003cp\u003eThis fan housing fits the STIHL MS 200, MS 200 T, 020 and 020 T chainsaws. The 020 and 020 T are the predecessor models to the MS 200 and MS 200 T — same platform, renamed when STIHL transitioned to the MS series designation.\u003c\/p\u003e\n\n\u003ch3\u003eWhat does the fan housing do on a chainsaw?\u003c\/h3\u003e\n\u003cp\u003eThe fan housing channels cooling air from the flywheel fan across the cylinder fins during engine operation. It maintains the designed airflow circuit that controls engine temperature under load, and physically shields the flywheel and ignition components from sawdust, chips and accidental contact.\u003c\/p\u003e\n\n\u003ch3\u003eWhen should the fan housing be replaced?\u003c\/h3\u003e\n\u003cp\u003eReplace if the housing is cracked, warped, impact-damaged or missing. A damaged housing disrupts the cooling airflow path and can lead to engine overheating under sustained load. Inspect during any service where the ignition or starter area is accessed.\u003c\/p\u003e\n\n\u003ch3\u003eShould I confirm my model before ordering?\u003c\/h3\u003e\n\u003cp\u003eYes. Always check your machine's model number and serial number before ordering spare parts. Contact Gustharts if you need help confirming compatibility with your specific machine.\u003c\/p\u003e","brand":"Stihl","offers":[{"title":"Default Title","offer_id":58031331246454,"sku":"ST-1129 080 1806","price":23.75,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0690\/6603\/1348\/files\/STIHL_genuine_spares_from_authorised_dealer.png?v=1775040092","url":"https:\/\/www.gustharts.com\/products\/fan-housing-020t-020-ms200-ms200t","provider":"Gustharts","version":"1.0","type":"link"}