{"product_id":"sierra-18-3785-prop-nut-for-mercruiser-bravo-ii-sterndrive-replaces-oem-11-82671127","title":"Sierra Prop Nut 18-3785 for Mercruiser Prop Hardware","description":"\u003cp\u003eThe Sierra Prop Nut 18-3785 is a replacement propeller nut engineered for Mercruiser prop hardware applications. It secures the propeller onto the propeller shaft, keeping the prop properly seated and preventing it from working loose under the vibration and load of normal running conditions. As a dedicated hardware component, it is a simple, purpose-built part meant to restore the original clamping function at the shaft when an old nut is worn, corroded, or lost during a prop change.\u003c\/p\u003e\u003cp\u003eThis prop nut is sold as a standalone hardware item, making it a straightforward, low-cost way to complete a propeller installation or keep a spare on hand for routine prop swaps and maintenance. Because it is categorized specifically under Mercruiser prop hardware, it is intended for use with compatible Mercruiser propeller shaft setups.\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 18-3785\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Prop Nut\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercruiser Prop Hardware\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.31 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Mercruiser prop hardware applications.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003eNo OEM cross-reference numbers are listed for this part.\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra Prop Nut 18-3785 used for?\u003c\/strong\u003e It secures a propeller onto the propeller shaft on compatible Mercruiser prop hardware setups, holding the prop firmly in place during operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3785 prop nut sold individually?\u003c\/strong\u003e Yes, Sierra part number 18-3785 is sold as a single Prop Nut, not as part of a kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3785 prop nut weigh?\u003c\/strong\u003e It weighs 0.31 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat category of hardware does part 18-3785 belong to?\u003c\/strong\u003e The Sierra 18-3785 is listed under Mercruiser Prop Hardware.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3785 prop nut fit all Mercruiser drives?\u003c\/strong\u003e Specific engine, drive, or year fitment is not specified for the 18-3785; confirm compatibility with your particular Mercruiser prop hardware setup before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e Part number 18-3785 is a genuine Sierra part, sold under the Sierra brand.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace my propeller nut?\u003c\/strong\u003e A prop nut like the Sierra 18-3785 should be replaced if it is worn, corroded, or removed and damaged during a propeller change, since a compromised nut cannot reliably retain the prop on the shaft.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat else do I need besides the 18-3785 prop nut to install a propeller?\u003c\/strong\u003e The 18-3785 Prop Nut is the retaining nut only; other hardware such as washers, tab washers, or cotter pins used in your specific prop assembly are separate components not included with this part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-3785 prop nut made of?\u003c\/strong\u003e Material composition is not specified for the Sierra 18-3785 Prop Nut.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3785 prop nut?\u003c\/strong\u003e The Sierra Prop Nut 18-3785 is identified by UPC 808282185510.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988165406939,"sku":"SIE-18-3785","price":11.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3785_lg__60535.1558127708.500.750.jpg?v=1785329180","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3785-prop-nut-for-mercruiser-bravo-ii-sterndrive-replaces-oem-11-82671127","provider":"Good Vibes Marina","version":"1.0","type":"link"}