{"product_id":"sierra-18-2781-exhaust-hose-replaces-volvo-penta-omc-3852742-marine-wet-exhaust","title":"Sierra Exhaust Hose 18-2781, Replaces 3852742, 4 Inch I.D., Fits 5.0L-8.2L Marine Engines","description":"\u003cp\u003eThe Sierra 18-2781 Exhaust Hose is a 4 inch inside diameter marine exhaust hose designed as a direct replacement for engine exhaust system service. It is built to move exhaust and cooling water discharge away from the engine through the boat's exhaust manifold and riser assembly, and it is engineered to meet or exceed the quality of the original equipment part it replaces. The hose carries a white finish and is sized specifically for a 4 inch I.D. Connection.\u003c\/p\u003e\u003cp\u003eThis exhaust hose is designated for a broad range of marine engines, including 5.0L, 5.7L, 5.8L, 7.4L, 8.1L, and 8.2L configurations across FL, GL, GI, GXI, GIL, GXIL, OSI, OSXI, FSI, and GSI variants. It directly replaces OEM part number 3852742, making it a straightforward drop-in solution for engines originally fitted with that hose. Whether servicing a routine exhaust hose replacement or repairing a cracked or deteriorated section, the Sierra 18-2781 restores proper exhaust routing and helps maintain a secure, leak-free connection at the manifold or riser fitting.\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 18-2781\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Exhaust Hose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Diameter:\u003c\/strong\u003e 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.9 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 3852742\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e 5.0L FL, GL, GXI, OSI; 5.7L GL, GI, GXI, GIL, GXIL, OSI, OSXI; 5.8L FL, FSI; 7.4L GL, GI, GSI; 8.1L; 8.2L GL, GSI\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e5.0L FL, GL, GXI, OSI\u003c\/li\u003e\n\u003cli\u003e5.7L GL, GI, GXI, GIL, GXIL, OSI, OSXI\u003c\/li\u003e\n\u003cli\u003e5.8L FL, FSI\u003c\/li\u003e\n\u003cli\u003e7.4L GL, GI, GSI\u003c\/li\u003e\n\u003cli\u003e8.1L\u003c\/li\u003e\n\u003cli\u003e8.2L GL, GSI\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e3852742\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-2781 exhaust hose replace?\u003c\/strong\u003e The Sierra 18-2781 exhaust hose directly replaces OEM part number 3852742.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the inside diameter of this exhaust hose?\u003c\/strong\u003e The Sierra 18-2781 has a 4 inch inside diameter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich engines is the 18-2781 exhaust hose designed for?\u003c\/strong\u003e It is designated for 5.0L FL, GL, GXI, OSI; 5.7L GL, GI, GXI, GIL, GXIL, OSI, OSXI; 5.8L FL, FSI; 7.4L GL, GI, GSI; 8.1L; and 8.2L GL, GSI engine configurations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-2781 exhaust hose weigh?\u003c\/strong\u003e The Sierra 18-2781 exhaust hose weighs 0.9 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-2781 exhaust hose?\u003c\/strong\u003e This exhaust hose has a white finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-2781 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e The 18-2781 is a Sierra aftermarket replacement hose, manufactured to meet or exceed the quality of the original equipment part it replaces, OEM number 3852742.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this hose fit my 5.7L GXI engine?\u003c\/strong\u003e Yes, the Sierra 18-2781 is designated for 5.7L GL, GI, GXI, GIL, GXIL, OSI, and OSXI engine configurations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-2781 fit 8.1L engines?\u003c\/strong\u003e Yes, the 18-2781 exhaust hose is designated for 8.1L engines, along with 8.2L GL and GSI configurations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat comes with the Sierra 18-2781?\u003c\/strong\u003e The Sierra 18-2781 is supplied as a single exhaust hose.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-2781 the correct hose for a 7.4L GSI engine?\u003c\/strong\u003e Yes, the Sierra 18-2781 exhaust hose is designated for 7.4L GL, GI, and GSI engine configurations.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM number should I cross-reference to confirm fit for the 18-2781?\u003c\/strong\u003e Cross-reference OEM number 3852742 to confirm the Sierra 18-2781 is the correct exhaust hose for your engine.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988113240283,"sku":"SIE-18-2781","price":39.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-2781_lg__74120.1558123226.500.750.jpg?v=1785188818","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-2781-exhaust-hose-replaces-volvo-penta-omc-3852742-marine-wet-exhaust","provider":"Good Vibes Marina","version":"1.0","type":"link"}