{"product_id":"chinese-50cc-139qmb-complete-engine-gasket-set","title":"Chinese 50cc 139QMB Complete Engine Gasket Set","description":"Complete 139QMB Engine Gasket Set Eliminate leaks and restore engine compression with the Universal Parts Complete 50cc Engine Gasket Set . Whether you are performing a top-end refresh or a full crankcase split, this comprehensive kit provides every seal and gasket required to properly close up a 50cc 4-stroke engine. Designed to meet or exceed OEM specifications, these gaskets are manufactured from high-density materials that resist the heat and chemical breakdown common in air-cooled scooter engines. Comprehensive Component List Engine Case Gaskets: Includes the center crankcase and stator\/magneto cover gaskets. Top-End Seals: Features the cylinder head gasket, base gasket, and valve cover seal. CVT \u0026amp; Transmission: Includes a high-quality CVT cover gasket tailored for your specific case length. Exhaust \u0026amp; Intake: Comes with a crush-style exhaust gasket and the intake manifold spacer O-ring. Sizing Guide \u0026amp; Selection QMB139 engines come in multiple configurations. Please use the Drop-Down Menus above to select the correct size for your build: Bore Size (Head Gasket) Recommended For 44mm Stock 50cc Engines 48mm 72cc \/ 80cc Big Bore Kits Case Type (CVT Gasket) Measurement Details Short Case (SC) 15 11\/16\" (398mm) Length | 8-Bolt Pattern Long Case (LC) 17\" (432mm) Length | 11-Bolt Pattern Installation Tip: Always ensure the engine mating surfaces are scraped perfectly clean and free of old gasket material before installing the new set. Vendor: Universal Parts Engine Type: GY6 50cc 4-Stroke (QMB139 \/ 1P39QMB)","brand":"universal parts","offers":[{"title":"Default Title","offer_id":48045915930811,"sku":"130-67    44-SC","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0719\/1340\/6651\/files\/453806.jpg?v=1783060903","url":"https:\/\/thriftyscooters.com\/products\/chinese-50cc-139qmb-complete-engine-gasket-set","provider":"Thrifty Scooters","version":"1.0","type":"link"}