{"product_id":"sierra-18-1970-2-exhaust-manifold-elbow-for-mercruiser-gm-big-block-v8-454-7-4l-fits-manifold-18-1957-2","title":"Sierra 18-1970-2 Exhaust Riser Elbow for Mercruiser Exhaust Manifolds","description":"\u003cp\u003eThe Sierra 18-1970-2 is an exhaust riser elbow built for Mercruiser exhaust manifold applications. It is manufactured as a direct OE replacement and is fully interchangeable with the original equipment part it replaces, so it drops into the same mounting points without modification. The riser elbow arrives primed and painted in white for added corrosion resistance and protection during storage and installation, and it is ready to install straight out of the box without additional finishing work.\u003c\/p\u003e\u003cp\u003eThis riser elbow is designed to work with specific mounting hardware rather than as a stand-alone bolt-on part. It is compatible with mounting kit 18-8529, which includes 18-0897 elbow gaskets, giving you the gaskets needed for a proper seal at installation. It is also compatible with mounting kit 18-8554, which is used together with the 18-1908 manifold spacer when mounting to manifold 18-1953-2. Selecting the correct mounting kit for your setup ensures the riser elbow seats and seals correctly against the manifold.\u003c\/p\u003e\u003cp\u003eBecause exhaust risers see constant exposure to combustion byproducts, raw water, and heat, the painted finish and OE-grade construction of the 18-1970-2 are intended to hold up under continuous marine engine operation. Confirm your existing riser and mounting kit part numbers before ordering to make sure this elbow matches your manifold setup.\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 18-1970-2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e Mercruiser Exhaust Manifolds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 21.8 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 11 x 10.9 x 6.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Primed and painted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Taiwan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282374013\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Mounting Kits:\u003c\/strong\u003e 18-8529, 18-8554\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eUse with mounting kit 18-8529 (includes 18-0897 elbow gaskets) for direct mounting.\u003c\/li\u003e\n\u003cli\u003eUse with mounting kit 18-8554 together with manifold spacer 18-1908 when mounting to manifold 18-1953-2.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eNo OEM cross-reference numbers are listed for this specific part number.\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-1970-2?\u003c\/strong\u003e The Sierra 18-1970-2 is an exhaust riser elbow used on Mercruiser exhaust manifold setups, manufactured as a direct OE replacement for the original riser elbow it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-1970-2 come with gaskets?\u003c\/strong\u003e The riser elbow itself does not include gaskets, but mounting kit 18-8529 for the 18-1970-2 includes 18-0897 elbow gaskets needed for installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich mounting kit should I use with this riser elbow?\u003c\/strong\u003e Mounting kit 18-8529 is used to mount the 18-1970-2 directly and includes the 18-0897 elbow gaskets; mounting kit 18-8554 is used instead when installing the 18-1970-2 with manifold spacer 18-1908 onto manifold 18-1953-2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-1970-2 riser elbow weigh?\u003c\/strong\u003e The Sierra 18-1970-2 exhaust riser elbow weighs 21.8 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color and finish does this part have?\u003c\/strong\u003e It has a white, primed and painted finish applied for added corrosion resistance and protection before installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-1970-2 a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-1970-2 is a Sierra branded part manufactured as a direct OE replacement, fully interchangeable with the original equipment part it is designed to replace.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this riser elbow be used with a manifold spacer?\u003c\/strong\u003e Yes, the 18-1970-2 can be paired with the 18-1908 manifold spacer when mounting kit 18-8554 is used, for installations on manifold 18-1953-2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-1970-2 manufactured?\u003c\/strong\u003e The country of origin listed for this exhaust riser elbow is Taiwan.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-1970-2?\u003c\/strong\u003e The package includes one 18-1970-2 exhaust riser elbow; mounting hardware and gaskets are supplied separately through the compatible mounting kits (18-8529 or 18-8554).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the package dimensions of the 18-1970-2?\u003c\/strong\u003e The 18-1970-2 exhaust riser elbow ships in a package measuring 11 x 10.9 x 6.5 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-1970-2 fit any exhaust manifold?\u003c\/strong\u003e The 18-1970-2 is intended for Mercruiser exhaust manifold applications and, when used with mounting kit 18-8554 and spacer 18-1908, is compatible with manifold 18-1953-2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a UPC available for the Sierra 18-1970-2?\u003c\/strong\u003e Yes, the Sierra 18-1970-2 exhaust riser elbow carries UPC 808282374013.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988089647323,"sku":"SIE-18-1970-2","price":237.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__78941.1772814308.500.750.jpg?v=1785188267","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-1970-2-exhaust-manifold-elbow-for-mercruiser-gm-big-block-v8-454-7-4l-fits-manifold-18-1957-2","provider":"Good Vibes Marina","version":"1.0","type":"link"}