{"product_id":"baotian-bt49qt-12-oil-strainer-screen-spring-cap-kit","title":"Baotian BT49QT-12 Oil Strainer Screen Spring Cap Kit","description":"\u003ch2\u003eBaotian BT49QT-12 Oil Strainer Screen, Spring \u0026amp; Cap Kit\u003c\/h2\u003e\n\n\u003cp\u003eReplacement \u003cstrong\u003eengine oil strainer assembly\u003c\/strong\u003e for the listed Baotian BT49QT-12 application. This three-piece service set is used in the crankcase oil-filter\/strainer housing on many GY6-derived and Chinese-built 4-stroke scooter engines.\u003c\/p\u003e\n\n\u003ch3\u003eComponents Identified From the Product Photos\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x threaded metal oil strainer \/ filter cap\u003c\/strong\u003e with external hex head\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x compression spring\u003c\/strong\u003e that keeps the oil screen seated correctly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 x reusable fine metal mesh thimble oil strainer\u003c\/strong\u003e with moulded sealing flange\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied as pictured.\u003c\/strong\u003e A separate loose O-ring is not shown as part of this Moto Mania kit, so it is not advertised as an included component.\u003c\/p\u003e\n\n\u003ch3\u003eVerified Application\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMake: \u003cstrong\u003eBaotian\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eBT49QT-12\u003c\/strong\u003e\n\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\u003cp\u003eThis model appears in the CMPO compatibility catalogue for the same \u003cstrong\u003eOLFC006\u003c\/strong\u003e oil-filter cap family. CMPO crankcase diagrams pair that cap with the \u003cstrong\u003eOLFSS002\u003c\/strong\u003e strainer spring and \u003cstrong\u003eOLST003\u003c\/strong\u003e mesh thimble strainer used in this style of assembly.\u003c\/p\u003e\n\n\u003ch3\u003eCross-Reference \/ Manufacturer Part Numbers\u003c\/h3\u003e\n\u003cp\u003eThe supplied Moto Mania item is an \u003cstrong\u003eunbranded aftermarket set\u003c\/strong\u003e. The following CMPO manufacturer and OE\/OEM references are provided for identification and compatibility checking; they do not mean the supplied parts are genuine CMPO-branded items.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil filter \/ strainer cap:\u003c\/strong\u003e CMPO \u003cstrong\u003eOLFC006\u003c\/strong\u003e — OE\/OEM reference \u003cstrong\u003e124901003\u003c\/strong\u003e, EAN 5057645144953\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOil filter strainer spring:\u003c\/strong\u003e CMPO \u003cstrong\u003eOLFSS002\u003c\/strong\u003e — OE\/OEM reference \u003cstrong\u003e140200032\u003c\/strong\u003e, EAN 5057645167402\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMesh thimble oil strainer:\u003c\/strong\u003e CMPO \u003cstrong\u003eOLST003\u003c\/strong\u003e — OE\/OEM reference \u003cstrong\u003e140200029\u003c\/strong\u003e, EAN 5057645114901\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\u003ch3\u003eCommon Engine Families\u003c\/h3\u003e\n\u003cp\u003eThis oil-strainer arrangement is widely used on 4-stroke scooter engines including \u003cstrong\u003e139QMA \/ 139QMB\u003c\/strong\u003e 50cc engines and related \u003cstrong\u003e152QMI \/ LJ1P52QMI \/ 157QMJ\u003c\/strong\u003e 125–150cc GY6-style families. Engine code alone should still be checked because individual manufacturers used several crankcase variants.\u003c\/p\u003e\n\n\u003ch3\u003eWhat the Oil Strainer Does\u003c\/h3\u003e\n\u003cp\u003eThe mesh screen traps larger particles and debris before they circulate through the engine lubrication system. The spring keeps the screen correctly loaded against its seat, while the threaded cap closes the housing and provides access for cleaning during an oil service.\u003c\/p\u003e\n\n\u003ch3\u003eWhen to Replace It\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDamaged or distorted mesh screen\u003c\/li\u003e\n\u003cli\u003eMissing or weakened strainer spring\u003c\/li\u003e\n\u003cli\u003eDamaged, rounded or leaking filter cap\u003c\/li\u003e\n\u003cli\u003eLost components during an oil change\u003c\/li\u003e\n\u003cli\u003eEngine rebuild or crankcase replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Compatibility Checks\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the engine is \u003cstrong\u003e4-stroke\u003c\/strong\u003e; do not use this listing for a 2-stroke engine simply because the scooter has a similar model name.\u003c\/li\u003e\n\u003cli\u003eCompare the cap diameter, thread, hex-head shape, spring and thimble-screen dimensions with the parts currently fitted.\u003c\/li\u003e\n\u003cli\u003eCheck the model\/frame or engine code where shown above.\u003c\/li\u003e\n\u003cli\u003eInspect the existing cap seal\/O-ring and replace it separately if required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDelivery \u0026amp; Returns\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFast UK dispatch\u003c\/li\u003e\n\u003cli\u003eFree UK delivery where shown on the product page\u003c\/li\u003e\n\u003cli\u003e30-day returns subject to the Moto Mania returns policy\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Unbranded","offers":[{"title":"Default Title","offer_id":57386987356535,"sku":"01331-ENG","price":6.0,"currency_code":"SHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0528\/8771\/6007\/files\/20260730_123233-Photoroom.jpg?v=1786961828","url":"https:\/\/www.motomaniauk.com\/products\/baotian-bt49qt-12-oil-strainer-screen-spring-cap-kit","provider":"Moto Mania UK","version":"1.0","type":"link"}