{"product_id":"cvk-main-jet-105-for-scooters-mopeds","title":"Cvk Main Jet (# 105) for Scooters \u0026 Mopeds","description":"\u003ch2\u003eCvk Main Jet (#105) for 139QMB and GY6 Scooters\u003c\/h2\u003e\u003cp\u003eThis Cvk Main Jet (#105) is designed for use in 139QMB and GY6 engines, making it a reliable choice for scooter and moped enthusiasts. It fits most CVK carburetors with a 5mm main jet opening, ensuring compatibility with a wide range of vehicles. As one of the \u003ca href=\"\/collections\/scooter-carburetors\"\u003escooter carburetors \u0026amp; jets\u003c\/a\u003e, it plays a key role in optimizing engine performance by regulating fuel flow. Perfect for riders looking to improve their scooter's capabilities.\u003c\/p\u003e\u003ch3\u003eCompatibility Overview\u003c\/h3\u003e\u003cp\u003eThis main jet is compatible with various engine codes for both 50cc and 125cc-169cc scooters. It works well with engines based on the 139QMB and 157QMJ models, making it versatile for different setups. If your engine's identification includes \"QM\" or \"FM,\" and it operates a CVK carburetor with a 5mm jet opening, this jet should work effectively for your scooter.\u003c\/p\u003e\u003ch3\u003eWhy You Might Need to Replace Your Main Jet\u003c\/h3\u003e\u003cp.replacing the main jet may be necessary due to performance issues or when modifying your scooter for improved efficiency. changes in altitude exhaust systems air filters can affect jetting performance. regularly checking and adjusting help maintain optimal fuel mixture engine function.\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Keihin round-style main jet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e M5x0.80\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length:\u003c\/strong\u003e 8mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eThis main jet fits a variety of engines, specifically:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e139QMB (including 139QMA, 1P39QMB, 1P39QMA-2)\u003c\/li\u003e\n\u003cli\u003eYN139QMB (including JJ1P39QMB, 139FMA-2, BD1P39QMB)\u003c\/li\u003e\n\u003cli\u003eBN139QMB (147QMD and other QMA\/QMB models)\u003c\/li\u003e\n\u003cli\u003e157QMJ (including 161QMK, 152QMI, 1P61QMK)\u003c\/li\u003e\n\u003cli\u003eYN1P57QMJ (1P52FMI, 154FMI, JJ157QMJ)\u003c\/li\u003e\n\u003cli\u003e1P57QMJ (BN157QMJ, BN161QMK-A, other QMJ\/QMK\/QMI models)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNot sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShop more:\u003c\/strong\u003e \u003ca href=\"\/collections\/scooter-carburetors\"\u003eScooter Carburetors \u0026amp; Jets\u003c\/a\u003e · \u003ca href=\"\/collections\/scooter-parts\"\u003eScooter Parts\u003c\/a\u003e\u003c\/p\u003e\u003c\/p.replacing\u003e","brand":"Magic Cars","offers":[{"title":"Default Title","offer_id":52800358252775,"sku":"25-914509","price":3.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2245\/9711\/files\/cvk-main-jet-105-1.jpg?v=1791665718","url":"https:\/\/www.magiccars.com\/products\/cvk-main-jet-105-for-scooters-mopeds","provider":"MagicCars","version":"1.0","type":"link"}