{"product_id":"dabazualy-thermostat-kit-for-mercruiser-gm-4-3l-8-2l-1987-2016-160-thermostat-sleeve-gaskets","title":"DABAZUALY Thermostat Kit for MerCruiser GM 4.3L–8.2L (1987–2016) — 160° Thermostat, Sleeve \u0026 Gaskets","description":"\u003cp\u003e\u003cstrong\u003eThe DABAZUALY 160° Thermostat Kit is a complete replacement set for MerCruiser GM V6 and V8 inboard\/outdrive engines (4.3L–8.2L) that restores correct engine temperature control with a new thermostat, sleeve and multiple gaskets.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis kit provides everything needed to renew the thermostat assembly on MerCruiser-powered boats from 1987 to 2016. It’s built to replace common OEM part numbers (including 807252Q5 and Sierra 18-3647) and contains a 160° thermostat plus a plastic sleeve and several cover and housing gaskets. Use it when servicing the cooling system, rebuilding the thermostat housing, or replacing worn seals to help reduce leaks and restore proper coolant flow.\u003c\/p\u003e\n\n\u003ch3\u003eWhich engines and model years does this kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis thermostat kit is designed for MerCruiser GM V6 and V8 engines used in inboard and outdrive configurations from 1987 through 2016. It covers common displacements including 4.3L, 5.0L, 5.7L, 7.4L, and 8.2L. Check your engine’s OEM part numbers to confirm compatibility before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits MerCruiser V6 \u0026amp; V8 GM 4.3L–8.2L (1987–2016)\u003c\/li\u003e\n  \u003cli\u003eReplaces Merc part numbers such as 807252Q5 and 808252 (thermostat)\u003c\/li\u003e\n  \u003cli\u003eCross-references GLM 13101 and Sierra 18-3647 (note Sierra part lacks sleeve)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat components are included and why they matter?\u003c\/h3\u003e\n\u003cp\u003eThe kit contains a 160° thermostat, a plastic housing sleeve, and multiple gaskets to fully reseal the thermostat housing during service. Having correct gaskets and the sleeve on hand prevents repeat disassembly and ensures a reliable seal between mating surfaces. The 160° thermostat is a common standard for these marine GM engines and helps maintain intended operating temperature under normal loads.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × 160° thermostat (replaces MerCruiser 808252)\u003c\/li\u003e\n  \u003cli\u003e1 × plastic housing sleeve (replaces MerCruiser 23-806922)\u003c\/li\u003e\n  \u003cli\u003eSeveral cover and housing gaskets to replace worn seals\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will installing this kit help my boat’s cooling system?\u003c\/h3\u003e\n\u003cp\u003eReplacing the thermostat, sleeve, and gaskets restores proper coolant routing and reduces the chance of leaks at the housing. A fresh thermostat opens at the rated 160° to allow coolant flow only when the engine reaches operating temperature, helping the engine reach and maintain designed thermal conditions. New gaskets ensure a tight seal, preventing seepage and loss of coolant that can lead to overheating or inefficient operation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRestores correct thermostat opening temperature (160°)\u003c\/li\u003e\n  \u003cli\u003ePrevents leaks with all necessary gaskets included\u003c\/li\u003e\n  \u003cli\u003ePlastic sleeve protects housing bore and eases thermostat removal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this a direct OEM replacement and what part numbers match?\u003c\/h3\u003e\n\u003cp\u003eThis DABAZUALY kit is built to replace commonly used OEM numbers so it functions as a direct service replacement in most applications listed. It cross-references MerCruiser part numbers such as 807252Q5 and the thermostat 808252, plus Sierra 18-3647 and GLM 13101 for equivalent coverage. Always verify the part numbers stamped on your existing components to confirm a direct match.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces MerCruiser 807252Q5, 808252 and related gasket\/sleeve parts\u003c\/li\u003e\n  \u003cli\u003eCross-reference: Sierra 18-3647, GLM 13101 (Sierra set may omit sleeve)\u003c\/li\u003e\n  \u003cli\u003eIntended for standard cooling setups on specified GM engines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This kit is aimed at marine mechanics, do-it-yourself boat owners, and service shops working on MerCruiser GM V6 and V8 inboard\/outdrive engines from 1987 to 2016. It’s especially useful when replacing a failing thermostat, repairing a leaking housing, or performing routine cooling system maintenance where OEM-equivalent parts and a full gasket set are needed. If you discover fitment or quality issues, DABAZUALY provides options for replacement or refund under warranty.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this kit fit my 5.7L MerCruiser from 1998?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the kit covers MerCruiser GM 5.7L engines from 1987–2016, but confirm your engine’s OEM part numbers before installing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include all gaskets needed for a thermostat housing rebuild?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it includes the thermostat, a plastic sleeve, and multiple cover and housing gaskets for a complete reseal.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"DABAZUALY","offers":[{"title":"Default Title","offer_id":48086338175134,"sku":"B09LXRQ99N","price":43.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/dabazualy-thermostat-kit-front-packaging.jpg?v=1785895500","url":"https:\/\/northtrailauto.ca\/products\/dabazualy-thermostat-kit-for-mercruiser-gm-4-3l-8-2l-1987-2016-160-thermostat-sleeve-gaskets","provider":"North Trail Auto","version":"1.0","type":"link"}