{"product_id":"sierra-18-30008-ballast-impeller-kit-replacement-impeller-for-marine-ballast-pumps","title":"Sierra Ballast Impeller Kit 18-30008 for Johnson Outboard Cooling Systems","description":"\u003cp\u003eThe Sierra Ballast Impeller Kit, part number 18-30008, is a replacement impeller kit built for the cooling system on Johnson outboard motors. The impeller is the core wear component inside a water pump housing, drawing raw water through the cooling passages to keep the powerhead running at safe operating temperature. Over time, impeller vanes lose flexibility and can crack or shear, leading to reduced water flow and overheating, so replacing the impeller kit is a routine maintenance item for outboard owners who service their own cooling systems.\u003c\/p\u003e\u003cp\u003eThis kit ships as a compact, ready-to-install unit sized for easy handling and storage aboard the boat or in a service kit. Because it is a genuine Sierra part, it is manufactured to match the fit and function expected for the Johnson outboard cooling system application it is designed for, giving owners a straightforward like-for-like replacement option when performing cooling system maintenance.\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 18-30008\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Ballast Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Johnson Outboard Cooling System\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282388362\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.06 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 4 x 4 x 2 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-30008 Ballast Impeller Kit used for?\u003c\/strong\u003e It is a replacement impeller kit for the cooling system on Johnson outboard motors, supplying the water pump with a new impeller to maintain proper raw water flow for engine cooling.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-30008 a genuine Sierra part number?\u003c\/strong\u003e Yes, 18-30008 is the Sierra manufacturer part number for the Ballast Impeller Kit, so it is a genuine Sierra replacement part rather than a generic substitute.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-30008 impeller kit?\u003c\/strong\u003e The Sierra Ballast Impeller Kit 18-30008 has package dimensions of 4 x 4 x 2 inches, making it a compact part that is easy to store with onboard spares.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-30008 impeller kit weigh?\u003c\/strong\u003e This impeller kit weighs 0.06 pounds, reflecting its small, lightweight construction as a single water pump component kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this kit fit Johnson outboard motors?\u003c\/strong\u003e Yes, the Sierra 18-30008 Ballast Impeller Kit is categorized for the Johnson outboard cooling system, making it intended for use in that cooling system application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I need to replace an outboard impeller?\u003c\/strong\u003e An outboard impeller's rubber vanes wear down or crack over time, reducing water flow through the cooling system; the Sierra 18-30008 kit provides a replacement impeller to restore proper cooling performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-30008 Ballast Impeller Kit?\u003c\/strong\u003e The kit is sold as the Ballast Impeller Kit under Sierra part number 18-30008, providing the impeller component needed for the outboard cooling system service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I identify the correct impeller kit for my Johnson outboard?\u003c\/strong\u003e Confirm the part number 18-30008 matches your existing Sierra cooling system component before ordering, since this kit is specific to that part number and application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-30008 impeller kit a UPC-verified product?\u003c\/strong\u003e Yes, the Sierra Ballast Impeller Kit 18-30008 carries UPC 808282388362 for verified product identification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I install this impeller kit myself?\u003c\/strong\u003e The Sierra 18-30008 Ballast Impeller Kit is designed as a standard replacement part for the water pump in the Johnson outboard cooling system, suitable for routine maintenance by owners comfortable servicing their outboard's cooling system.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136308955,"sku":"SIE-18-30008","price":17.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-30008__72645.1739477161.500.750.jpg?v=1785189158","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-30008-ballast-impeller-kit-replacement-impeller-for-marine-ballast-pumps","provider":"Good Vibes Marina","version":"1.0","type":"link"}