{"product_id":"27806871-mercury-mercruiser-278m0204687-thermostat-gasket-genuine-quicksilver-oem-part","title":"27806871 Mercury MerCruiser 278M0204687 Thermostat gasket | 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 Thermostat Housing Gasket - Part Number: 27-8M0238323\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine Quicksilver cork thermostat housing gasket for MerCruiser GM 3.0L, V6 and V8 petrol engines. This gasket supersedes earlier 27-806871 and 27-8M0204687 references and seals the thermostat housing joint in sterndrive and inboard cooling systems.\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 thermostat gasket\n\u003c\/p\u003e\n\u003cp\u003e\n • Current service reference 27-8M0238323\n\u003c\/p\u003e\n\u003cp\u003e\n • Supersedes 27-8M0204687 and earlier 27-806871 references\n\u003c\/p\u003e\n\u003cp\u003e\n • Cork-style thermostat housing gasket used across MerCruiser petrol cooling systems\n\u003c\/p\u003e\n\u003cp\u003e\n • Suits 3.0L, 4.3L, 4.5L, 5.0L, 5.7L, 6.2L and big block applications where specified\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 • 27-8M0238323 → Supersedes 27-8M0204687\n\u003c\/p\u003e\n\u003cp\u003e\n • 27-8M0204687 → Supersedes 27-806871\n\u003c\/p\u003e\n\u003cp\u003e\n • 27-806871 earlier OEM thermostat gasket reference\n\u003c\/p\u003e\n\u003cp\u003e\n • 27-47510 \/ 27-47510Q earlier related thermostat gasket references where specified\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 • 27-8M0238323\n\u003c\/p\u003e\n\u003cp\u003e\n • 8M0238323\n\u003c\/p\u003e\n\u003cp\u003e\n • 27-8M0204687\n\u003c\/p\u003e\n\u003cp\u003e\n • 8M0204687\n\u003c\/p\u003e\n\u003cp\u003e\n • 27-806871\n\u003c\/p\u003e\n\u003cp\u003e\n • 806871\n\u003c\/p\u003e\n\u003cp\u003e\n • 27806871\n\u003c\/p\u003e\n\u003cp\u003e\n • 27-47510\n\u003c\/p\u003e\n\u003cp\u003e\n • 47510\n\u003c\/p\u003e\n\u003cp\u003e\n • 27-47510Q\n\u003c\/p\u003e\n\u003cp\u003e\n • 47510Q\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 • Recmar: REC27-47510Q\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 thermostat housing and cooling-system gasket applications\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 3.0L inline 4-cylinder, 4.3L V6, 4.5L V6, 5.0L V8, 5.7L V8, 6.2L V8 and big block V8 engines where 27-8M0238323 \/ 27-8M0204687 \/ 27-806871 is specified\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 3.0L GM 181 I\/L4 - serial 0L097000 to 0W301999\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 3.0L GM 181 I\/L4 - serial 0W302000 to 1A0019999\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 3.0L GM 181 I\/L4 - serial 1A002000 to 1A020543\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 3.0L GM 181 I\/L4 - serial 1A020544 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 3.0L MPI EC - serial 1A072812 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 350 MAG Ski \/ EFI \/ MPI Ski - 1994-1997 where specified\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 454 EFI Ski and 454 MAG MPI Ski - 1995-1997 where specified\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 5.7L Competition Ski \/ Carb Ski \/ MPI Ski \/ Ski EC - serial-numbered applications where specified\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser Black Scorpion 350 MAG, Scorpion 350 and Scorpion 377 - serial-numbered applications where specified\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser MX 6.2L MPI Ski - serial-numbered applications where specified\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 262 MAG - serial 0F803800 to 0K999999\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 4.3L Gen II \/ Gen+ 2BBL and 4BBL - 1996-1997 where specified\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 4.3L Carb Alpha \/ Bravo - serial 0L010044 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 4.3L MPI Alpha \/ Bravo - serial 0L010044 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 4.5L MPI 200 \/ 250 Alpha and Bravo - serial 2A441953 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 4.5L MPI 200 \/ 250 EC Alpha and Bravo - serial 2A441953 and up\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 350 MAG MPI Horizon and 350 MAG MIE - serial-numbered applications where specified\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 454 MAG MPI Horizon - serial-numbered applications where specified\n\u003c\/p\u003e\n\u003cp\u003e\n • MerCruiser 5.0L, 5.7L and 6.2L GM V8 Alpha \/ Bravo \/ MIE cooling systems where 27-806871 or later reference is specified\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine Type: MerCruiser GM and Mercury petrol inboard \/ sterndrive cooling systems\n\u003c\/p\u003e\n\u003cp\u003e\n • System Type: Thermostat housing gasket\n\u003c\/p\u003e\n\u003cp\u003e\n • Fitment Note: This gasket is matched by thermostat housing style and cooling-system diagram.\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 housing gasket seals the thermostat housing joint to prevent water or coolant leakage while maintaining correct cooling flow through the thermostat assembly.\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 • Water leak around thermostat housing\n\u003c\/p\u003e\n\u003cp\u003e\n • Corrosion or rust staining at the housing joint\n\u003c\/p\u003e\n\u003cp\u003e\n • Cooling-system seepage after thermostat service\n\u003c\/p\u003e\n\u003cp\u003e\n • Overheating caused by poor housing seal\n\u003c\/p\u003e\n\u003cp\u003e\n • Gasket replacement required during thermostat or housing removal\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":53387952783652,"sku":"745061284968","price":12.4,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_07a186bf-2766-4c56-8a15-8abf79ccaef5.jpg?v=1777210346","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/27806871-mercury-mercruiser-278m0204687-thermostat-gasket-genuine-quicksilver-oem-part","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}