{"product_id":"intake-manifold-gasket-set-for-mercruiser-4-3l-gm-262-cid-175-185-205-hp-replaces-27-11977a88-sierra-18-4388","title":"Sierra Intake Manifold Gasket Set 18-4388, Replaces 27-11977A88 \u0026 27-11977A92, for GM 4.3L 262 CID 175\/185\/205 HP MerCruiser Engines","description":"\u003cp\u003eThe Sierra 18-4388 Intake Manifold Gasket Set is a complete gasket kit designed to seal the intake manifold on GM 262 CID (4.3L) marine engines rated 175, 185, and 205 HP. This set includes the 18-3879 head gasket, giving installers the matched components needed for a full intake and head resealing job in a single package rather than sourcing gaskets separately.\u003c\/p\u003e\u003cp\u003eThe gasket set cross-references directly to Mercury Marine part numbers 27-11977A88 and 27-11977A92, making it a straightforward replacement for engines originally fitted with those OEM gaskets. It is built for GM 262 CID \/ 4.3L MerCruiser stern drive engines and is compatible with engines from 1985-1993. As with all Sierra engine gaskets, it is manufactured to seal reliably against fuel, oil, and coolant exposure in a marine engine compartment.\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 18-4388\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Intake Manifold Gasket Set, 18-3879 Head Gasket\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 2.42 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999563514\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGM 262 CID Engine, 175, 185 \u0026amp; 205 HP, 4.3L\u003c\/li\u003e\n\u003cli\u003eMerCruiser Stern Drive, 1985-1993\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e27-11977A88\u003c\/li\u003e\n\u003cli\u003e27-11977A92\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-4388 intake manifold gasket set fit?\u003c\/strong\u003e It fits GM 262 CID (4.3L) engines rated 175, 185, and 205 HP, specifically MerCruiser stern drive engines built between 1985 and 1993.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does 18-4388 replace?\u003c\/strong\u003e The 18-4388 gasket set cross-references to Mercury Marine intake manifold gasket sets 27-11977A88 and 27-11977A92.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this set include a head gasket?\u003c\/strong\u003e Yes, Sierra 18-4388 includes the 18-3879 head gasket along with the intake manifold gaskets, so both are covered in one purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-4388 a direct replacement for the Mercury Marine gasket set?\u003c\/strong\u003e Yes, it is built to the same fitment and cross-references directly to Mercury Marine 27-11977A88 and 27-11977A92 for GM 262 CID \/ 4.3L engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-4388 gasket set weigh?\u003c\/strong\u003e The Sierra 18-4388 intake manifold gasket set weighs 2.42 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the 18-4388 gasket material?\u003c\/strong\u003e The gasket set is white in color.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill 18-4388 work on a 250 CID inline 6-cylinder engine?\u003c\/strong\u003e No, that application uses a different Sierra part number; 18-4388 is specific to GM 262 CID (4.3L) engines rated 175, 185, and 205 HP.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-4388 gasket set?\u003c\/strong\u003e The UPC for Sierra 18-4388 is 030999563514.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use 18-4388 on a non-MerCruiser GM 4.3L engine?\u003c\/strong\u003e Sierra 18-4388 is specified for GM 262 CID \/ 4.3L MerCruiser stern drive engines rated 175, 185, and 205 HP; fitment outside that application is not confirmed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-4388 kit include installation hardware or bolts?\u003c\/strong\u003e The included components are the intake manifold gasket set and the 18-3879 head gasket only; no additional hardware is listed.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988196536539,"sku":"SIE-18-4388","price":396.05,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-4388_lg__93499.1722489016.500.750.jpg?v=1785188277","url":"https:\/\/www.goodvibesmarina.com\/products\/intake-manifold-gasket-set-for-mercruiser-4-3l-gm-262-cid-175-185-205-hp-replaces-27-11977a88-sierra-18-4388","provider":"Good Vibes Marina","version":"1.0","type":"link"}