{"product_id":"sierra-18-1277-head-gasket-set-for-mercury-marine-engines-intake-head-exhaust-manifold-gaskets-plus-valve-stem-seals","title":"Sierra 18-1277 Head Gasket Set for Mercruiser 470, 485, and 488 Engines","description":"\u003cp\u003eThe Sierra 18-1277 Head Gasket Set is a complete engine gasket kit built for Mercruiser 470, 485, and 488 stern drive engines. Rather than a single-piece gasket, this is a full kit designed to cover an engine rebuild or major service, pairing a head gasket with the intake, exhaust, valve cover, and carburetor base gaskets plus a full set of valve stem seals, so an installer is not stuck sourcing individual gaskets separately. The kit uses a generic-type gasket design that is common across engine brands, allowing the same short block and valve grind gasket sets to be used with different exhaust manifold gasket kits depending on the application, which helps consolidate the parts needed to keep on hand for these engines.\u003c\/p\u003e\u003cp\u003eInside the kit are six distinct components: an intake manifold gasket, a carburetor base gasket, a head gasket, eight valve stem seals, a valve cover gasket, and an exhaust manifold gasket. This gives a rebuilder the core sealing components needed for the top end of the engine in one kit. The set is finished in white and is sold as a single kit (1 count).\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 18-1277\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Head Gasket Set\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 0.87 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282233808\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1 kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e 1 intake manifold gasket (18-0158), 1 carburetor base gasket (18-2848), 1 head gasket (18-3878), 8 valve stem seals (18-4023), 1 valve cover gasket (18-0685), 1 exhaust manifold gasket (18-0956-1)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercruiser 470, 1976-82\u003c\/li\u003e\n\u003cli\u003eMercruiser 470, 1983-84\u003c\/li\u003e\n\u003cli\u003eMercruiser 485, 1980-82\u003c\/li\u003e\n\u003cli\u003eMercruiser 488, 1983-84\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-1277 Head Gasket Set fit?\u003c\/strong\u003e It fits Mercruiser 470 engines built 1976-82 and 1983-84, Mercruiser 485 engines built 1980-82, and Mercruiser 488 engines built 1983-84.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-1277 Head Gasket Set?\u003c\/strong\u003e The kit includes one intake manifold gasket (18-0158), one carburetor base gasket (18-2848), one head gasket (18-3878), eight valve stem seals (18-4023), one valve cover gasket (18-0685), and one exhaust manifold gasket (18-0956-1).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-1277 Head Gasket Set weigh?\u003c\/strong\u003e The Sierra 18-1277 Head Gasket Set weighs 0.87 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-1277 Head Gasket Set?\u003c\/strong\u003e This gasket kit is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-1277 kit include head bolts?\u003c\/strong\u003e No, the Sierra 18-1277 Head Gasket Set contains gaskets and valve stem seals only; head bolts are not among the six components in the kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many valve stem seals come in the 18-1277 kit?\u003c\/strong\u003e Eight valve stem seals (part 18-4023) are included in the Sierra 18-1277 Head Gasket Set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-1277 gasket set made by Sierra?\u003c\/strong\u003e Yes, part number 18-1277 is manufactured by Sierra as a complete head gasket set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-1277 exhaust manifold gasket be swapped for a different exhaust configuration?\u003c\/strong\u003e Yes, the Sierra 18-1277 kit uses the same short block and valve grind gasket sets that can be paired with different exhaust manifold gasket kits depending on the specific application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a single gasket or a full kit?\u003c\/strong\u003e The Sierra 18-1277 is a full head gasket set with six components, not a single gasket, covering the intake, head, valve cover, carburetor base, valve stems, and exhaust manifold.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many units come in one order of 18-1277?\u003c\/strong\u003e Each order of the Sierra 18-1277 Head Gasket Set is one complete kit (1 count).\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988087484635,"sku":"SIE-18-1277","price":126.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1277_lg__70349.1753456081.500.750.jpg?v=1785187986","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-1277-head-gasket-set-for-mercury-marine-engines-intake-head-exhaust-manifold-gaskets-plus-valve-stem-seals","provider":"Good Vibes Marina","version":"1.0","type":"link"}