{"product_id":"sierra-18-1989k-thermostat-service-kit-for-18-1989-marine-thermostat-housing-mercruiser-8m0061381-861006a1","title":"Sierra 18-1989K Thermostat Service Kit for 18-1989 Thermostat Housing","description":"\u003cp\u003eThe Sierra 18-1989K Thermostat Service Kit provides the replacement parts needed to service the 18-1989 thermostat housing on your marine engine. Rather than replacing the entire housing, this kit lets you restore proper cooling system function with fresh service components sized specifically for that housing, helping maintain correct engine operating temperature and preventing the overheating issues that come from a worn or failing thermostat setup. It is built to a universal fit, making it a straightforward option for boat owners performing routine cooling system maintenance. Sierra engineers its parts to meet or exceed the performance of the original equipment they replace, and the company supplies OEM engine manufacturers and boat builders with parts on a daily basis, so this kit is manufactured to the same standard used across the marine industry. At 0.1 pounds, it is a compact, lightweight kit that is easy to store aboard or in a parts locker until it's needed. Whether you are performing scheduled maintenance or addressing a cooling system problem, the 18-1989K gives you the correct service components matched to the 18-1989 housing without having to source individual parts separately.\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 18-1989K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Thermostat Service Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Housing:\u003c\/strong\u003e 18-1989 Thermostat Housing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Universal Fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282271145\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eFits the Sierra 18-1989 Thermostat Housing\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-1989K Thermostat Service Kit for?\u003c\/strong\u003e It is a service kit for the 18-1989 thermostat housing, providing the replacement parts needed to service that housing rather than replacing the whole unit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-1989K fit any boat engine?\u003c\/strong\u003e The 18-1989K is listed as a universal fit kit, sized to match the 18-1989 thermostat housing rather than one specific engine model.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-1989K weigh?\u003c\/strong\u003e This Sierra thermostat service kit weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-1989K kit?\u003c\/strong\u003e The kit is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many units come in one 18-1989K package?\u003c\/strong\u003e One Sierra 18-1989K Thermostat Service Kit is included per unit count of 1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-1989K a genuine Sierra part or aftermarket?\u003c\/strong\u003e It is a genuine Sierra part, manufactured to meet or exceed the performance of the original equipment it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-1989K come with a warranty?\u003c\/strong\u003e Yes, the Sierra 18-1989K Thermostat Service Kit is covered by a limited warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-1989K?\u003c\/strong\u003e The UPC for the Sierra 18-1989K Thermostat Service Kit is 808282271145.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to replace the entire thermostat housing to use this kit?\u003c\/strong\u003e No, the 18-1989K is specifically a service kit designed to refresh the 18-1989 thermostat housing without replacing the full housing assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWho makes the 18-1989K thermostat service kit?\u003c\/strong\u003e Sierra manufactures the 18-1989K, and the company supplies parts to OEM engine manufacturers and boat builders as part of its regular production.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988090138843,"sku":"SIE-18-1989K","price":16.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-1989K__90158.1739459150.500.750.jpg?v=1785188003","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-1989k-thermostat-service-kit-for-18-1989-marine-thermostat-housing-mercruiser-8m0061381-861006a1","provider":"Good Vibes Marina","version":"1.0","type":"link"}