{"product_id":"carburetor-kit-18-7021-for-mercury-wm-wmk-series-carburetors","title":"Sierra Carburetor Kit 18-7021 for WM and WMK Mercury Outboard Carburetors","description":"\u003cp\u003eThe Sierra 18-7021 Carburetor Kit is a rebuild kit engineered for WM and WMK series carburetors, including the WMK-2, WMK-3, WMK-4, WMK-5, WMK-7, and WMK-8 models. It is designed to restore carburetor performance on applicable Mercury outboard engines by replacing the wear-prone internal components that govern fuel metering and air-fuel mixture control. Components in the kit are precision-built, and Sierra recommends following the carburetor manufacturer's specifications and guidelines during installation to ensure a proper fit and correct operation after the rebuild.\u003c\/p\u003e\u003cp\u003eThis kit is intended for technicians and boat owners performing routine carburetor maintenance or troubleshooting rough idle, flooding, or poor fuel metering caused by worn internal carburetor parts. Every Sierra part, including this kit, is backed by Sierra's industry-leading customer satisfaction warranty, giving buyers confidence in fit and durability when servicing WM and WMK carburetors.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-7021\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Carburetors \u0026amp; Kits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Carburetors:\u003c\/strong\u003e WM, WMK Carburetors (WMK-2, WMK-3, WMK-4, WMK-5, WMK-7, WMK-8)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExterior Finish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 0.75 x 6 x 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.05 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999320728\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWM Carburetors\u003c\/li\u003e\n\u003cli\u003eWMK-2 Carburetors\u003c\/li\u003e\n\u003cli\u003eWMK-3 Carburetors\u003c\/li\u003e\n\u003cli\u003eWMK-4 Carburetors\u003c\/li\u003e\n\u003cli\u003eWMK-5 Carburetors\u003c\/li\u003e\n\u003cli\u003eWMK-7 Carburetors\u003c\/li\u003e\n\u003cli\u003eWMK-8 Carburetors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat carburetors does the Sierra 18-7021 kit fit?\u003c\/strong\u003e The Sierra 18-7021 Carburetor Kit fits WM and WMK series carburetors, specifically the WMK-2, WMK-3, WMK-4, WMK-5, WMK-7, and WMK-8 models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7021 a complete carburetor or a rebuild kit?\u003c\/strong\u003e It is a rebuild kit, not a complete carburetor. The Sierra 18-7021 supplies the internal components needed to rebuild an existing WM or WMK carburetor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 18-7021 carburetor kit?\u003c\/strong\u003e The kit measures 0.75 x 6 x 6 inches and weighs 0.05 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-7021 kit come with an OEM warranty?\u003c\/strong\u003e Yes, the Sierra 18-7021 is covered under Sierra's industry-leading customer satisfaction warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my carburetor is a WM or WMK model?\u003c\/strong\u003e Check the carburetor's stamped model identifier for a WM or WMK designation; the Sierra 18-7021 kit is built specifically for WM and WMK-2, WMK-3, WMK-4, WMK-5, WMK-7, and WMK-8 carburetors, so confirming the model number before ordering ensures correct fitment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish do the components in the 18-7021 kit have?\u003c\/strong\u003e The components included in the Sierra 18-7021 Carburetor Kit have a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit fix a rough idle or flooding issue?\u003c\/strong\u003e Rebuilding a WM or WMK carburetor with the Sierra 18-7021 kit replaces worn internal components that commonly cause rough idle, flooding, or poor fuel metering, provided the carburetor body itself is not damaged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-7021 an authentic Sierra part or aftermarket?\u003c\/strong\u003e The 18-7021 is a genuine Sierra part, manufactured under the Sierra brand for WM and WMK carburetor applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need any special tools to install the 18-7021 kit?\u003c\/strong\u003e Sierra recommends following the carburetor manufacturer's specifications and guidelines for proper fit and installation of the 18-7021 kit; standard carburetor rebuild tools are typically used for this type of service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-7021 Carburetor Kit?\u003c\/strong\u003e The UPC for the Sierra 18-7021 Carburetor Kit is 030999320728.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988360245467,"sku":"SIE-18-7021","price":20.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7021_lg__76038.1558130610.500.750.jpg?v=1785189049","url":"https:\/\/www.goodvibesmarina.com\/products\/carburetor-kit-18-7021-for-mercury-wm-wmk-series-carburetors","provider":"Good Vibes Marina","version":"1.0","type":"link"}