{"product_id":"sierra-18-5961-9-marine-freeze-plug-1-5-8-in-pack-of-8-replaces-mercruiser-19-34270-stern-drive-internal-engine","title":"Sierra Freeze Plug 18-5961-9, 1-5\/8 Inch Bronze, Interchanges with Mercruiser 19-34270, Pack of 8","description":"\u003cp\u003eThe Sierra 18-5961-9 freeze plug is a bronze expansion plug sized at 1-5\/8 inch, sold in a pack of 8. Freeze plugs (also called expansion plugs) seal core casting holes in an engine block or manifold and are a routine replacement item when servicing internal engine components. This Sierra plug is built to meet or exceed original equipment quality and is manufactured in the United States, giving it a direct, drop-in equivalence to the factory part it replaces.\u003c\/p\u003e\u003cp\u003eConstructed from bronze with a gold finish, the 18-5961-9 resists the corrosion that steel or brass freeze plugs are prone to in a marine engine's wet, saltwater-exposed environment, which is why bronze is the preferred material for this application. It is designed to be interchangeable with Mercruiser Stern Drive part number 19-34270, making it a straightforward replacement when servicing Mercruiser internal engine components. Each pack contains 8 plugs of the same 1-5\/8 inch size, so a full engine or manifold resealing job can typically be completed from a single package rather than sourcing plugs individually.\u003c\/p\u003e\u003cp\u003eSierra also offers this same freeze plug in a 1-3\/4 inch size under a different part number, so buyers should confirm the bore size needed before ordering.\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 18-5961-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 1-5\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Bronze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Gold\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 8 freeze plugs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.61 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e United States\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Mercruiser Stern Drive engines using the equivalent freeze plug listed below.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercruiser 19-34270\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the part number for this freeze plug pack?\u003c\/strong\u003e The Manufacturer Part Number is Sierra 18-5961-9, covering the full pack of 8 freeze plugs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size are the freeze plugs in the Sierra 18-5961-9 pack?\u003c\/strong\u003e Each freeze plug in this pack measures 1-5\/8 inch.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many freeze plugs are included?\u003c\/strong\u003e The 18-5961-9 pack contains 8 freeze plugs of the same 1-5\/8 inch size.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-5961-9 freeze plug made from?\u003c\/strong\u003e It is made from bronze, which resists corrosion better than steel or brass in a marine engine environment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this freeze plug interchange with an OEM Mercruiser part?\u003c\/strong\u003e Yes, the Sierra 18-5961-9 is designed to be interchangeable with Mercruiser Stern Drive part 19-34270.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-5961-9 pack weigh?\u003c\/strong\u003e The pack of 8 freeze plugs weighs 0.61 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is this freeze plug?\u003c\/strong\u003e The Sierra 18-5961-9 freeze plug has a gold finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-5961-9 freeze plug manufactured?\u003c\/strong\u003e This freeze plug is manufactured in the United States.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a larger size available if 1-5\/8 inch is not the right fit?\u003c\/strong\u003e Sierra also offers an 18-5962-9 freeze plug pack in a 1-3\/4 inch size for applications needing the larger bore.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5961-9 a genuine part or an aftermarket equivalent?\u003c\/strong\u003e It is a Sierra International part built to meet or exceed original equipment quality standards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I buy a single freeze plug instead of the full pack?\u003c\/strong\u003e The 18-5961-9 is sold only as a pack of 8 freeze plugs, not individually.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is a freeze plug used for on a marine engine?\u003c\/strong\u003e A freeze plug like the Sierra 18-5961-9 seals a core casting hole in the engine block or manifold and is a common replacement item during internal engine service.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988347138267,"sku":"SIE-18-5961-9","price":41.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5961-9__15008.1729903572.500.750.jpg?v=1785188158","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-5961-9-marine-freeze-plug-1-5-8-in-pack-of-8-replaces-mercruiser-19-34270-stern-drive-internal-engine","provider":"Good Vibes Marina","version":"1.0","type":"link"}