{"product_id":"carbbia-160-f-thermostat-kit-for-mercruiser-gm-4-3l-8-2l-includes-plastic-sleeve-gaskets","title":"CARBBIA 160°F Thermostat Kit for Mercruiser\/GM 4.3L–8.2L — Includes Plastic Sleeve \u0026 Gaskets","description":"\u003cstrong\u003eCARBBIA 807252Q5 is a complete 160°F thermostat kit designed to replace Mercruiser and GM original equipment on 1987 and newer V6 and V8 marine engines.\u003c\/strong\u003e\n\nThis kit supplies a 160-degree thermostat plus all necessary gaskets and a plastic sleeve to restore reliable temperature regulation in Mercruiser-compatible engines. Replacing a worn thermostat and seals improves coolant flow control and helps prevent overheating or erratic temperature readings caused by degraded parts. The CARBBIA kit matches common OEM part numbers so it fits a wide range of Mercruiser and GM marine applications from 4.3L through 8.2L.\n\n\u003ch3\u003eWhich engines and years will this thermostat kit fit?\u003c\/h3\u003e\n\nThe CARBBIA 807252Q5 kit is made for 1987 and later GM-based marine engines used by Mercruiser, covering both V6 and V8 displacements. It references multiple OEM part numbers so you can cross-check fitment before ordering.\n\n\u003cul\u003e\n  \u003cli\u003eCompatible with Mercruiser V6 \u0026amp; V8: 4.3L, 5.0L, 5.7L, 7.4L, 8.2L (1987-up).\u003c\/li\u003e\n  \u003cli\u003eMatches Merc part numbers: 807252Q5 and 808252 equivalence.\u003c\/li\u003e\n  \u003cli\u003eCross-references GLM 13101 and Sierra 18-3647 (note: Sierra version lacks plastic sleeve).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat parts are included and why each matters?\u003c\/h3\u003e\n\nThis kit contains the thermostat, a protective plastic sleeve, and multiple gaskets for the housing and cover so you replace every sealing surface at once. Installing all components together reduces the chance of coolant leaks and ensures the thermostat sits correctly for accurate temperature control.\n\n\u003cul\u003e\n  \u003cli\u003e160°F thermostat — controls coolant flow at the designed operating temperature.\u003c\/li\u003e\n  \u003cli\u003ePlastic sleeve — supports the thermostat valve and protects the housing bore.\u003c\/li\u003e\n  \u003cli\u003eMultiple cover and housing gaskets — ensure leak-free seals on reassembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does this CARBBIA kit compare to OEM or single-part replacements?\u003c\/h3\u003e\n\nUnlike buying a thermostat alone, this kit supplies the gaskets and sleeve you’ll likely need during a service, saving a follow-up repair. It’s manufactured to match OEM reference numbers so fit and function align with original equipment expectations.\n\n\u003cul\u003e\n  \u003cli\u003eFull-kit convenience prevents mismatched seals or missing sleeve issues.\u003c\/li\u003e\n  \u003cli\u003eOEM cross-reference numbers simplify verification for mechanics and DIYers.\u003c\/li\u003e\n  \u003cli\u003eDesigned for standard cooling systems used in Mercruiser\/GM marine engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I check before installing this kit?\u003c\/h3\u003e\n\nConfirm engine model, year, and displacement against the listed fitment to avoid ordering errors. Inspect the housing bore and mating surfaces for corrosion or damage; replacing the thermostat and gaskets won’t seal a warped or cracked cover.\n\n\u003cul\u003e\n  \u003cli\u003eVerify engine is a GM-based Mercruiser 1987 or newer model in the listed sizes.\u003c\/li\u003e\n  \u003cli\u003eClean and inspect thermostat housing and cover surfaces prior to installation.\u003c\/li\u003e\n  \u003cli\u003eReplace any damaged bolts, clips, or corroded parts that would affect sealing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\nWho is this for:\n\nThis CARBBIA thermostat kit is intended for boat owners, marine mechanics, and weekend DIYers who need a direct-fit replacement for Mercruiser-compatible GM engines from 4.3L through 8.2L. It’s useful when performing routine cooling-system service or troubleshooting temperature control issues, and for anyone who prefers a complete OEM-referenced kit that includes the thermostat, sleeve, and all gaskets to ensure a proper, leak-free installation.\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this kit fit a 1995 Mercruiser 5.7L?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The CARBBIA 807252Q5 kit fits Mercruiser 5.7L GM-based engines from 1987 and newer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the plastic sleeve included with every kit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. This CARBBIA kit includes a plastic sleeve; note that some cross-reference Sierra part numbers may omit it.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"CARBBIA","offers":[{"title":"Default Title","offer_id":48084538392734,"sku":"B0C5MTHV9H","price":32.73,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/carbbia-thermostat-kit-front-packaging.jpg?v=1785859064","url":"https:\/\/northtrailauto.ca\/products\/carbbia-160-f-thermostat-kit-for-mercruiser-gm-4-3l-8-2l-includes-plastic-sleeve-gaskets","provider":"North Trail Auto","version":"1.0","type":"link"}