{"product_id":"blue-line-crankcase-cover-right-side-qmb139-1100-1305","title":"Blue Line Right Crankcase Cover Kit - 50cc 139QMB Series A","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eRestore your scooter's engine integrity with the \u003cstrong\u003eBlue Line GY6 50cc 139QMB Right Crankcase Cover Kit\u003c\/strong\u003e. Designed specifically for Series A 50cc 139QMB 4-stroke engines, this complete OEM-style assembly offers a reliable, direct-fit solution for cracked or damaged covers. Blue Line components are engineered to provide factory quality at a fraction of the cost.\u003c\/p\u003e\u003cp\u003eThis comprehensive kit includes everything needed for a successful installation, ensuring a leak-free seal and proper oil circulation for your engine's right side.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Replacement Kit:\u003c\/strong\u003e Includes the crankcase cover, gasket, dipstick, oil screen, and all necessary mounting hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Quality:\u003c\/strong\u003e Blue Line parts are precision-engineered to match OEM factory specifications for fitment and durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReady to Install:\u003c\/strong\u003e Comes with pre-installed dowels and seals to simplify the repair process.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries A Specific:\u003c\/strong\u003e Optimized for 54mm stud spacing configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable style=\"width: 100%;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"text-align: left;\"\u003eAttribute\u003c\/th\u003e\n\u003cth style=\"text-align: left;\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlue Line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1100-1305\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Fitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50cc 139QMB 4T (Series A)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStud Spacing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e54mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e17\" L x 7\" W x 3\" H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3\u003eCompatibility \u0026amp; Fitment\u003c\/h3\u003e\u003cp\u003eFits 50cc \/ 80cc engines with the following engine codes: \u003cstrong\u003e139QMA, 139QMB, 1P39QMB, 1P39QMA-2, YN139QMB, JJ1P39QMB, 139FMA-2, BD1P39QMB, BN139QMB, and 147QMD.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\u003cem\u003e\u003cstrong\u003eFitment Tip:\u003c\/strong\u003e To confirm you have a Series A engine, remove your valve cover and measure the stud spacing. \u003cstrong\u003eSeries A = 54mm\u003c\/strong\u003e. If your spacing is 57mm, you require a Series B cover.\u003c\/em\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"BLUE LINE","offers":[{"title":"Default Title","offer_id":46756558700824,"sku":"1100-1305","price":42.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/1728\/1816\/products\/1100-1305_f6d60503-9e3c-4187-b517-fe5d97389172.jpg?v=1695269265","url":"https:\/\/www.scooterworks.com\/products\/blue-line-crankcase-cover-right-side-qmb139-1100-1305","provider":"Scooterworks USA, LLC","version":"1.0","type":"link"}