{"product_id":"sierra-18-0987-9-throttle-body-to-manifold-gasket-pack-of-2-replaces-evinrude-johnson-332319-evinrude-johnson-outboard","title":"Sierra 18-0987-9 Throttle Body to Manifold Gasket, Replaces 321479, Fits 25 \u0026 35 HP Outboards, Pack of 2","description":"\u003cp\u003eThe Sierra 18-0987-9 is a throttle body to manifold gasket for 25 HP and 35 HP outboard engines, sold as a pack of 2. This gasket seals the mating surface between the throttle body and the intake manifold, maintaining a proper air\/fuel seal at this connection. It is built to meet or exceed original equipment quality, making it a direct-fit replacement for the OEM gasket it supersedes.\u003c\/p\u003e\u003cp\u003eBecause it ships two to a pack, the 18-0987-9 covers a full gasket replacement plus a spare, or two separate jobs, without needing to order twice. Replacing this gasket during a throttle body service or manifold removal helps restore a tight seal and prevent air leaks that can affect engine performance. The part is identified by Sierra part number 18-0987-9 and directly replaces OEM part number 321479.\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 18-0987-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Throttle Body to Manifold Gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 2 gaskets per pack\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Fitment:\u003c\/strong\u003e 25 HP \u0026amp; 35 HP outboard engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.04 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282162245\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (OEM):\u003c\/strong\u003e 321479\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e25 HP outboard engines\u003c\/li\u003e\n\u003cli\u003e35 HP outboard engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e321479\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-0987-9 gasket fit?\u003c\/strong\u003e The Sierra 18-0987-9 throttle body to manifold gasket fits 25 HP and 35 HP outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come in this pack?\u003c\/strong\u003e Sierra 18-0987-9 is sold as a pack of 2 gaskets, not a single piece.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does 18-0987-9 replace?\u003c\/strong\u003e It directly replaces OEM part number 321479.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere does this gasket get installed?\u003c\/strong\u003e This gasket seals the mating surface between the throttle body and the intake manifold on 25 HP and 35 HP outboard engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-0987-9 an OEM part or aftermarket?\u003c\/strong\u003e It is an aftermarket gasket manufactured by Sierra to meet or exceed the quality of the original equipment part it replaces, OEM 321479.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does this gasket set weigh?\u003c\/strong\u003e The Sierra 18-0987-9 pack of 2 gaskets weighs 0.04 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for this part?\u003c\/strong\u003e The UPC for Sierra 18-0987-9 is 808282162245.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use one gasket from the pack and save the other?\u003c\/strong\u003e Yes, Sierra 18-0987-9 ships two gaskets per pack, so one can be installed now and the second kept as a spare or used on a second engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes 18-0987-9 fit engines other than 25 HP and 35 HP models?\u003c\/strong\u003e Sierra lists the 18-0987-9 gasket as fitting 25 HP and 35 HP outboard engines specifically.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy replace the throttle body to manifold gasket?\u003c\/strong\u003e Replacing the throttle body to manifold gasket, such as the Sierra 18-0987-9, restores the seal between these components and helps prevent leaks during throttle body or manifold service on 25 HP and 35 HP outboards.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988086730971,"sku":"SIE-18-0987-9","price":8.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-0987-9_lg__79815.1558121598.500.750.jpg?v=1785188937","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-0987-9-throttle-body-to-manifold-gasket-pack-of-2-replaces-evinrude-johnson-332319-evinrude-johnson-outboard","provider":"Good Vibes Marina","version":"1.0","type":"link"}