{"product_id":"864493-mercury-mercruiser-mercruiser-closed-cooling-thermostat-genuine-quicksilver-oem-part","title":"864493 Mercury MerCruiser MerCruiser Closed Cooling Thermostat | Genuine Quicksilver OEM Part","description":"\u003cp\u003e\n 🔧 Product Description\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Genuine Quicksilver Closed Cooling Thermostat - Part Number: 864493\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine Quicksilver 170°F thermostat for MerCruiser closed cooling systems. This thermostat is used on selected MCM 4.3L, 5.0L, 5.7L and 6.2L MPI engines with dry-joint exhaust and closed cooling, helping regulate coolant temperature inside the closed cooling circuit.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n ⚙️ Key Features\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine Quicksilver OEM closed cooling thermostat\n\u003c\/p\u003e\n\u003cp\u003e\n • Correct Mercury part number 864493\n\u003c\/p\u003e\n\u003cp\u003e\n • 170°F \/ 77°C thermostat\n\u003c\/p\u003e\n\u003cp\u003e\n • Used on selected MerCruiser MPI engines with closed cooling\n\u003c\/p\u003e\n\u003cp\u003e\n • Designed for dry-joint exhaust cooling-system configurations\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n OEM Supersession Chain:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 864493 current OEM thermostat reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n OEM \/ Related Numbers:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 864493\n\u003c\/p\u003e\n\u003cp\u003e\n • 25-8071341 related thermostat seal\n\u003c\/p\u003e\n\u003cp\u003e\n • Closed Cooling Thermostat 170°F\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Aftermarket \/ Verified Equivalents:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Mallory: 9-43015\n\u003c\/p\u003e\n\u003cp\u003e\n • Recmar: REC864493\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🚤 Compatibility\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Commonly used on:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser closed cooling systems with dry-joint exhaust\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Typically suits:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine models:\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser MCM 4.3L MPI engines with dry-joint exhaust and closed cooling\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser MCM 5.0L MPI engines with dry-joint exhaust and closed cooling\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser MCM 5.7L MPI engines with dry-joint exhaust and closed cooling\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser MCM 350 MAG MPI engines with dry-joint exhaust and closed cooling where specified\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser MCM 6.2L MPI engines with dry-joint exhaust and closed cooling\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser V6 \/ V8 MPI closed cooling thermostat applications requiring 864493\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine Type: MerCruiser petrol V6 \/ V8 MPI\n\u003c\/p\u003e\n\u003cp\u003e\n • Temperature Rating: 170°F \/ 77°C\n\u003c\/p\u003e\n\u003cp\u003e\n • System Type: Closed cooling thermostat\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔌 Function\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n The thermostat regulates coolant flow through the closed cooling system so the engine maintains the correct operating temperature.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Common signs of failure:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine overheating\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine running below normal temperature\n\u003c\/p\u003e\n\u003cp\u003e\n • Slow warm-up\n\u003c\/p\u003e\n\u003cp\u003e\n • Coolant temperature fluctuation\n\u003c\/p\u003e\n\u003cp\u003e\n • Thermostat stuck open, stuck closed or corroded\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 📦 Condition\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine Quicksilver part\n\u003c\/p\u003e\n\u003cp\u003e\n • Brand new\n\u003c\/p\u003e\n\u003cp\u003e\n • Supplied in original or equivalent packaging\n\u003c\/p\u003e\n","brand":"Quicksilver","offers":[{"title":"Default Title","offer_id":53388153717028,"sku":"464991D","price":54.9,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_a1196d79-c0b7-4c13-81b4-47449dfde970.jpg?v=1777212353","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/864493-mercury-mercruiser-mercruiser-closed-cooling-thermostat-genuine-quicksilver-oem-part","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}