{"product_id":"101-octane-crankshaft-with-22t-sprocket-for-139qmb-qma-gy6","title":"101 Octane Crankshaft With 22t Sprocket For 139qmb\/qma Gy6","description":"\u003cp\u003eThe 101 Octane Crankshaft is a high-quality aftermarket replacement designed for 50\/90cc 4-stroke engines, specifically the GY6 50 (139QMB\/QMA) series. This crankshaft comes pre-pressed with main bearings and a connecting rod for ease of installation.\u003c\/p\u003e\n\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThis 101 Octane crankshaft is engineered as a direct replacement for GY6 engines. A key feature is the 22-tooth oil pump drive sprocket, which is essential for newer GY6 engine models, including Rex models. Ensure compatibility by counting the teeth on your existing oil pump drive cog before ordering. If you have an older 16-tooth variant, this crankshaft can still be installed, provided you also install oil pump BT14782 and oil pump drive cog BT14783. With proper installation, this crankshaft will restore your engine's performance and reliability. Get the 101 Octane Crankshaft for your 139QMB\/QMA engine today.\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 straightforward installation.\u003c\/li\u003e\n  \u003cli\u003eFeatures a 22-tooth oil pump drive sprocket, compatible with newer GY6 models.\u003c\/li\u003e\n  \u003cli\u003eCan replace 16-tooth variants with additional oil pump and drive cog installation.\u003c\/li\u003e\n  \u003cli\u003eRestores engine performance and reliability.\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: 50\/90cc 4-stroke GY6 50 (139QMB\/QMA) engines\u003c\/li\u003e\n  \u003cli\u003eOil Pump Drive Sprocket: 22-tooth\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImportant to know\u003c\/h2\u003e\n\u003cp\u003eIf your engine uses a 16-tooth oil pump drive, you will also need to purchase and install oil pump BT14782 and oil pump drive cog BT14783 to use this crankshaft.\u003c\/p\u003e","brand":"101 Octane","offers":[{"title":"Default Title","offer_id":53716778484042,"sku":"09210942","price":66.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/6c8c0d6865a41a67f470e31e0a0f34a9.webp?v=1767578369","url":"https:\/\/partsdenmark.com\/it\/products\/101-octane-crankshaft-with-22t-sprocket-for-139qmb-qma-gy6","provider":"Parts Denmark","version":"1.0","type":"link"}