{"product_id":"exhaust-manifold-mounting-kit-18-8520-for-mercruiser-manifolds-18-1950-1-18-1951-1-includes-manifold-gasket-hardware","title":"Sierra Exhaust Manifold Mounting Kit 18-8520 for Mercruiser 18-1950-1, 18-1951-1 Manifolds","description":"\u003cp\u003eThe Sierra 18-8520 is a complete exhaust manifold mounting kit engineered to install and reseal Mercruiser exhaust manifolds 18-1950-1 and 18-1951-1. Rather than sourcing a gasket and fasteners separately, this kit bundles the parts needed to remount the manifold in one purchase, saving a trip back to the parts counter mid-job.\u003c\/p\u003e\u003cp\u003eInside the kit is the 18-2949 manifold gasket, which seals the manifold-to-block mating surface, along with the mounting bolts required for installation. The kit also includes the 18-8548 hardware kit, which supplies the hardware specific to the 18-1950-1 and 18-1951-1 manifolds, so the fastener sizing and count match the application rather than requiring guesswork from a generic hardware assortment.\u003c\/p\u003e\u003cp\u003eThis kit is intended for the manifold mounting\/reseal job only; it is not a full manifold, riser, or elbow replacement. Confirm your manifold part number is 18-1950-1 or 18-1951-1 before ordering, since Sierra also offers separate mounting kits for other manifold and front\/end plate combinations.\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 18-8520\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Exhaust Manifold Mounting Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercruiser Exhaust Manifolds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse With Manifolds:\u003c\/strong\u003e 18-1950-1, 18-1951-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Includes:\u003c\/strong\u003e 18-2949 manifold gasket, mounting bolts, 18-8548 hardware kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282127169\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.8 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercruiser exhaust manifold 18-1950-1\u003c\/li\u003e\n\u003cli\u003eMercruiser exhaust manifold 18-1951-1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat manifolds does the Sierra 18-8520 mounting kit fit?\u003c\/strong\u003e The 18-8520 is designed for use with Mercruiser exhaust manifolds 18-1950-1 and 18-1951-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 18-8520 mounting kit?\u003c\/strong\u003e The kit includes the 18-2949 manifold gasket, mounting bolts, and the 18-8548 hardware kit, which supplies the hardware for the 18-1950-1 and 18-1951-1 manifolds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-8520 kit include a manifold gasket?\u003c\/strong\u003e Yes, the 18-2949 manifold gasket is included as part of the 18-8520 mounting kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-8548 hardware kit sold separately from the 18-8520?\u003c\/strong\u003e No separate purchase is needed for this application; the 18-8548 hardware kit is already included in the 18-8520 mounting kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-8520 kit come with a manifold?\u003c\/strong\u003e No, the 18-8520 is a mounting kit only, supplying the gasket and hardware needed to mount the 18-1950-1 or 18-1951-1 manifold; it does not include the manifold itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-8520 mounting kit weigh?\u003c\/strong\u003e The Sierra 18-8520 exhaust manifold mounting kit weighs 0.8 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the 18-8520 kit be used with other Sierra manifold mounting configurations?\u003c\/strong\u003e The 18-8520 is specified for the 18-1950-1 and 18-1951-1 manifolds; other manifold, front plate, or elbow combinations use different Sierra mounting kits such as 18-8512, 18-8514, or 18-8554.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part?\u003c\/strong\u003e Yes, the 18-8520 is a Sierra branded exhaust manifold mounting kit, part number 18-8520.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the product dimension listed for the 18-8520 kit?\u003c\/strong\u003e The 18-8520 mounting kit is listed at 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need additional mounting bolts to install this kit?\u003c\/strong\u003e No, mounting bolts are included in the 18-8520 kit along with the 18-2949 gasket and 18-8548 hardware kit.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988434104539,"sku":"SIE-18-8520","price":20.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-8520__39270.1737870204.500.750.jpg?v=1785188950","url":"https:\/\/www.goodvibesmarina.com\/products\/exhaust-manifold-mounting-kit-18-8520-for-mercruiser-manifolds-18-1950-1-18-1951-1-includes-manifold-gasket-hardware","provider":"Good Vibes Marina","version":"1.0","type":"link"}