{"product_id":"101-octane-crankshaft-for-139qmb-qma-with-16-tooth-sprocket","title":"101 Octane Crankshaft For 139qmb\/qma With 16-tooth Sprocket","description":"\u003cp\u003eThe 101 Octane Crankshaft offers original equipment (OE) quality for 50cc and 90cc 4-stroke engines, specifically the GY6 50 (139QMB\/QMA) engine platform. This crankshaft arrives pre-pressed with main bearings and the connecting rod already installed, simplifying the installation process.\u003c\/p\u003e\n\n  \u003ch2\u003eDescription\u003c\/h2\u003e\n  \u003cp\u003eThis 101 Octane crankshaft is designed as a direct replacement for the original equipment, ensuring a seamless fit and reliable performance. One crucial detail to verify before ordering is the oil pump drive cog configuration. GY6 engines utilize two different versions of crankshafts, distinguished by the number of teeth on the oil pump drive cog located on the right-hand side. This particular crankshaft features the older, more common 16-tooth cog. If unsure, always count the teeth on your existing crankshaft to ensure proper compatibility and function. Using the wrong crankshaft can cause issues with the oil pump, potentially damaging the engine. This high-quality aftermarket crankshaft will restore your engine's performance and reliability.\u003c\/p\u003e\n\n  \u003ch2\u003eFeatures \u0026amp; highlights\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eDirect replacement for GY6 50 (139QMB\/QMA) engines.\u003c\/li\u003e\n    \u003cli\u003ePre-pressed with main bearings and connecting rod for easy installation.\u003c\/li\u003e\n    \u003cli\u003eFeatures the commonly used 16-tooth oil pump drive cog.\u003c\/li\u003e\n    \u003cli\u003eEnsures proper oil pump function and engine lubrication.\u003c\/li\u003e\n    \u003cli\u003eManufactured to original equipment (OE) quality standards.\u003c\/li\u003e\n    \u003cli\u003eIdeal for restoring performance to your 50\/90cc 4-stroke engine.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eBrand: 101 Octane\u003c\/li\u003e\n    \u003cli\u003eProduct Name: Crankshaft\u003c\/li\u003e\n    \u003cli\u003eCompatibility: 50cc\/90cc 4-stroke engines (GY6 50, 139QMB\/QMA)\u003c\/li\u003e\n    \u003cli\u003eOil Pump Sprocket: 16-tooth\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eImportant to know\u003c\/h2\u003e\n  \u003cp\u003eVerify the number of teeth on your existing crankshaft's oil pump drive cog (located on the right-hand side) before ordering. This crankshaft features a 16-tooth cog. Using the incorrect crankshaft may lead to improper oil pump operation and potential engine damage. If your engine requires a 22-tooth cog, this crankshaft will not be compatible.\u003c\/p\u003e","brand":"101 Octane","offers":[{"title":"Default Title","offer_id":53716773536074,"sku":"09210941","price":51.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/6c835b29252bbff94b7e5f35baea7199.webp?v=1767578347","url":"https:\/\/partsdenmark.com\/fr\/products\/101-octane-crankshaft-for-139qmb-qma-with-16-tooth-sprocket","provider":"Parts Denmark","version":"1.0","type":"link"}