{"product_id":"sierra-18-1845-dry-joint-exhaust-elbow-replaces-mercruiser-864591t02-fits-v6-v8-305-350-377-2004-up-and-4-3l-alpha-bravo-dry-joint","title":"Sierra 18-1845 Dry-Joint Exhaust Riser, Replaces 27-864850A02 \u0026 27-864547A1, Fits 4.3L\/5.0L\/5.7L\/6.2L Engines","description":"\u003cp\u003eThe Sierra 18-1845 is a dry-joint exhaust riser (elbow) built for marine engines that use the dry-joint manifold and riser exhaust system. It routes exhaust and cooling water away from the exhaust manifold and is designed as a direct replacement for the original equipment riser on applicable 4.3L, 5.0L, 5.7L, and 6.2L engines. The dry-joint design keeps the exhaust and cooling water paths separated at the manifold-to-riser connection until they combine further along the system, which is the defining feature of this riser style versus a wet-joint design.\u003c\/p\u003e\u003cp\u003eThis riser is intended to be used together with the matching 18-1843 or 18-1842 exhaust manifold and the 18-1845 riser as a complete dry-joint set, so the components seal and fit correctly. It is a round, white-finished component sized to bolt directly in place of the original riser it replaces. Because it is a direct-fit replacement part, no modification to the exhaust system is required during installation.\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 18-1845\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Dry-Joint Exhaust Riser\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape:\u003c\/strong\u003e Round\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 27.2 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282359430\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e 4.3L, 5.0L, 5.7L, 6.2L using the Dry Joint Manifold and Riser\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUsed With:\u003c\/strong\u003e 18-1843 and 18-1842 exhaust manifolds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 27-864850A02, 27-864547A1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFits 4.3L, 5.0L, 5.7L, and 6.2L engines utilizing the Dry Joint Manifold and Riser exhaust system\u003c\/li\u003e\n\u003cli\u003eUsed with 18-1843 or 18-1842 exhaust manifolds and the 18-1845 riser as a matched set\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e27-864850A02\u003c\/li\u003e\n\u003cli\u003e27-864547A1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-1845 exhaust riser fit?\u003c\/strong\u003e The Sierra 18-1845 fits 4.3L, 5.0L, 5.7L, and 6.2L engines that use the Dry Joint Manifold and Riser exhaust system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-1845 replace?\u003c\/strong\u003e The 18-1845 riser replaces OEM numbers 27-864850A02 and 27-864547A1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-1845 a wet-joint or dry-joint riser?\u003c\/strong\u003e It is a dry-joint riser, meaning the exhaust and cooling water paths stay separated at the manifold-to-riser connection, unlike a wet-joint design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-1845 exhaust riser weigh?\u003c\/strong\u003e The Sierra 18-1845 weighs 27.2 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color and shape is the 18-1845 riser?\u003c\/strong\u003e The 18-1845 has a white finish and a round shape.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat manifold should I pair with the 18-1845 riser?\u003c\/strong\u003e The 18-1845 riser is designed to be used with the 18-1843 or 18-1842 exhaust manifold as a matched dry-joint set.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-1845 be installed as a direct replacement without modification?\u003c\/strong\u003e Yes, the Sierra 18-1845 is built as a direct-fit replacement riser for the applicable dry-joint exhaust system, requiring no modification to install.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-1845 come as a single riser or a full manifold kit?\u003c\/strong\u003e The 18-1845 is the riser component itself; it is used together with a separate 18-1843 or 18-1842 manifold to complete the dry-joint exhaust system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-1845 the same part regardless of engine size?\u003c\/strong\u003e One 18-1845 part number covers 4.3L, 5.0L, 5.7L, and 6.2L engines that use the Dry Joint Manifold and Riser system, since it is not liter-specific in design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-1845 riser?\u003c\/strong\u003e The UPC for the Sierra 18-1845 exhaust riser is 808282359430.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988089123035,"sku":"SIE-18-1845","price":407.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-1845__69741.1727706272.500.750.jpg?v=1785188574","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-1845-dry-joint-exhaust-elbow-replaces-mercruiser-864591t02-fits-v6-v8-305-350-377-2004-up-and-4-3l-alpha-bravo-dry-joint","provider":"Good Vibes Marina","version":"1.0","type":"link"}