{"product_id":"partszen-cylinder-piston-kit-for-stihl-ms390-ms290-ms310-49mm-bore-ready-to-install-top-end-replacement","title":"partszen Cylinder \u0026 Piston Kit for Stihl MS390 MS290 MS310 — 49MM Bore, Ready-to-Install Top-End Replacement","description":"\u003cstrong\u003epartszen 49MM cylinder and piston assembly is a full replacement kit engineered to restore compression and running performance for Stihl MS390, MS290, and MS310 chainsaws.\u003c\/strong\u003e\n\n\u003cp\u003eIf your Stihl chainsaw is struggling with poor compression, heavy smoke, or inconsistent power, replacing the cylinder and piston can bring it back to reliable operation. This partszen kit matches OEM fit dimensions (49MM) and replaces part number 1127 020 1216. It ships as a ready-to-install bundle that includes the cylinder assembly and the common small parts needed to complete the swap.\u003c\/p\u003e\n\n\u003ch3\u003eWill this cylinder and piston fit my Stihl MS390, MS290, or MS310?\u003c\/h3\u003e\n\u003cp\u003eYes — the kit is designed specifically to fit those three Stihl models and corresponds to the listed replacement part number. Before ordering, verify your saw’s specifications to confirm the 49MM bore size and the part number match your existing component.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible models: Stihl MS390, MS290, MS310\u003c\/li\u003e\n  \u003cli\u003eBore size: 49MM to match factory dimensions\u003c\/li\u003e\n  \u003cli\u003eReplacement part number: 1127 020 1216 equivalence\u003c\/li\u003e\n  \u003cli\u003eCheck your saw’s model plate or service manual for confirmation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat exactly comes in the partszen replacement kit?\u003c\/h3\u003e\n\u003cp\u003eThe package is supplied as a comprehensive replacement set so you won’t need to source small parts separately. Alongside the cylinder and piston, the kit contains the essential hardware and consumables commonly replaced during a top-end rebuild.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x cylinder assembly sized to 49MM\u003c\/li\u003e\n  \u003cli\u003e1 x piston and related piston pin bearing\u003c\/li\u003e\n  \u003cli\u003e1 x stud, 1 x plastic pipe, and 1 x oil line\u003c\/li\u003e\n  \u003cli\u003e1 x spark plug, 1 x oil filter and other necessary small items as pictured\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation and what should I watch for?\u003c\/h3\u003e\n\u003cp\u003eInstallation requires intermediate mechanical skill, basic hand tools, and attention to gasket surfaces and torque specs. If you’re comfortable removing the top-end of a two-stroke chainsaw and following a repair manual, you can complete the swap; otherwise, consult a qualified technician.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse a service manual for correct disassembly and torque values\u003c\/li\u003e\n  \u003cli\u003eReplace gaskets and seals to avoid air or oil leaks\u003c\/li\u003e\n  \u003cli\u003eInspect crank and bearing condition before reassembly\u003c\/li\u003e\n  \u003cli\u003eConfirm ignition timing and carburetor adjustment after install\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat maintenance benefits can I expect after installing this kit?\u003c\/h3\u003e\n\u003cp\u003eFitting a new cylinder and piston restores the sealing surfaces that create compression, which typically improves starting behavior, power delivery, and fuel efficiency. It also helps reduce excessive smoke and oil consumption caused by worn cylinder walls or piston rings.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRestores compression for stronger throttle response\u003c\/li\u003e\n  \u003cli\u003eReduces blow-by and oil burning from worn components\u003c\/li\u003e\n  \u003cli\u003eHelps the saw idle and start more consistently\u003c\/li\u003e\n  \u003cli\u003eExtends usable life of the engine when installed correctly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This partszen 49MM cylinder and piston kit is aimed at owners, professional arborists, and service technicians working on Stihl MS390, MS290, or MS310 chainsaws who need a complete top-end replacement. It’s suitable for anyone performing routine engine rebuilds or repairing worn engines that match the 1127 020 1216 specification, provided they have the tools and mechanical know-how to carry out the installation safely.\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 kit replace part number 1127 020 1216?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The partszen 49MM kit is intended as a replacement for part number 1127 020 1216.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I install this myself on an MS390?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: If you have basic engine repair skills and the proper tools, you can install it; otherwise, use a qualified technician.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"partszen","offers":[{"title":"Default Title","offer_id":56828068364628,"sku":"B0C52365Z6","price":59.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1063\/2652\/4244\/files\/partszen-cylinder-piston-front-view.jpg?v=1786995078","url":"https:\/\/gardenluxe.co.uk\/products\/partszen-cylinder-piston-kit-for-stihl-ms390-ms290-ms310-49mm-bore-ready-to-install-top-end-replacement","provider":"Gardenluxe Uk","version":"1.0","type":"link"}