{"product_id":"carb-rebuild-kit-gy50-qmb139","title":"Blue Line 139QMB CVK Carburetor Rebuild Kit | 18mm \u0026 19mm","description":"\u003cp\u003eRestore your clogged or worn CVK carburetor with this \u003cstrong\u003ecomplete rebuild kit for 139QMB (GY50) 50cc and 80cc scooters\u003c\/strong\u003e. Fits 18mm and 19mm CVK constant-velocity carburetors — commonly the PD18J or PD19J models found on virtually all 139QMB-based Chinese scooters. The kit includes every internal wear item needed for a full rebuild: float, needle seat, main jet, pilot jet, needle jet, mixture screw with spring and o-ring, e-clip, flat washer, and float bowl gasket.\u003c\/p\u003e\u003ch3\u003eKit Contents\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWhite plastic float with hinge arm\u003c\/li\u003e\n\u003cli\u003eFloat needle (needle seat)\u003c\/li\u003e\n\u003cli\u003eMain jet (brass hex body)\u003c\/li\u003e\n\u003cli\u003ePilot \/ idle jet (small brass)\u003c\/li\u003e\n\u003cli\u003eNeedle jet (silver tapered)\u003c\/li\u003e\n\u003cli\u003eMixture screw with spring and o-ring\u003c\/li\u003e\n\u003cli\u003eE-clip\u003c\/li\u003e\n\u003cli\u003eFlat washer\u003c\/li\u003e\n\u003cli\u003eFloat bowl gasket (rectangular rubber)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFeatures\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eComplete Rebuild Kit for 18mm and 19mm CVK Carburetors (PD18J\/PD19J)\u003c\/li\u003e\n\u003cli\u003eIncludes Float Float Needle Main Jet Pilot Jet Needle Jet and Mixture Screw\u003c\/li\u003e\n\u003cli\u003eIncludes Float Bowl Gasket E-Clip Flat Washer O-Ring and Spring\u003c\/li\u003e\n\u003cli\u003ePilot Jet Size 33\u003c\/li\u003e\n\u003cli\u003eFits 139QMB GY50 50cc and 80cc 4-Stroke Engines\u003c\/li\u003e\n\u003cli\u003eCompatible with Virtually All Chinese 50cc Scooters Using 139QMB Engine\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePilot Jet Size:\u003c\/strong\u003e 33\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarburetor Fit:\u003c\/strong\u003e 18mm and 19mm CVK (PD18J \/ PD19J)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e 139QMB \/ GY50 50cc and 80cc 4-stroke\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 151-267 \/ 151-95\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eModel Fitment\u003c\/h2\u003e\u003cp\u003eFits 139QMB-based 50cc and 80cc engines with 18mm or 19mm CVK carburetors (PD18J or PD19J). Compatible with the vast majority of Chinese-manufactured 50cc scooters — see brand and model list in product details. Verify your carburetor bore size (18mm or 19mm) before ordering.\u003c\/p\u003e","brand":"Blue Line","offers":[{"title":"Default Title","offer_id":67964531179841,"sku":"1300-1122","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1011\/7785\/2225\/files\/az-p012-5996-0-1300-1122_3dbc4a38-0cb7-4a45-b0df-f274958aa6d5.jpg?v=1792557769","url":"https:\/\/azscooterparts.com\/products\/carb-rebuild-kit-gy50-qmb139","provider":"AZScooterParts","version":"1.0","type":"link"}