{"product_id":"sierra-18-3741-9-stainless-steel-cotter-pin-pack-of-10-for-evinrude-johnson-outboard-prop-nut-replaces-omc-309955-314502","title":"Sierra Stainless Steel Cotter Pin 18-3741-9, Pack of 10, for Outboard Propeller Nuts","description":"\u003cp\u003eThe Sierra 18-3741-9 is a stainless steel cotter pin used to secure outboard propeller nuts in place, preventing the nut from backing off during operation. Cotter pins are a required part of a proper propeller installation, and stainless steel construction resists the corrosion that comes from constant saltwater or freshwater exposure below the waterline. This item is sold as a package of 10 pins, giving you enough on hand for routine propeller service, seasonal maintenance, or keeping spares in the boat for on-water prop changes.\u003c\/p\u003e\u003cp\u003eInstalling a fresh cotter pin any time a propeller nut is removed and reinstalled is standard practice, since a bent or reused pin is more likely to fail. The compact size and light weight make this an easy item to keep in a tackle box or tool kit alongside other prop hardware.\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 18-3741-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 10 cotter pins per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.07 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282164621\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Outboard propeller nut hardware\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-3741-9 cotter pin used for?\u003c\/strong\u003e It secures an outboard propeller nut so the nut cannot back off the propeller shaft during operation, part number 18-3741-9.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many cotter pins come in a package?\u003c\/strong\u003e The 18-3741-9 is sold as a package of 10 stainless steel cotter pins.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-3741-9 cotter pin made from?\u003c\/strong\u003e Stainless steel, chosen for corrosion resistance in a marine environment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does a package of 18-3741-9 cotter pins weigh?\u003c\/strong\u003e A package weighs 0.07 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eShould a cotter pin be reused after removing a propeller?\u003c\/strong\u003e No, a new cotter pin such as the Sierra 18-3741-9 should be installed any time the propeller nut is removed, since a bent or previously bent pin is more prone to failure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3741-9 cotter pin only for Evinrude outboards?\u003c\/strong\u003e It is listed for outboard propeller nut applications; the Sierra 18-3741-9 part number should be matched to your specific propeller nut and shaft hardware before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for this product?\u003c\/strong\u003e The UPC for the Sierra 18-3741-9 package of cotter pins is 808282164621.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a cotter pin the same as a keeper clip?\u003c\/strong\u003e No, a cotter pin is a separate piece of hardware from a nut keeper; the 18-3741-9 is specifically a cotter pin, not a keeper.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-3741-9?\u003c\/strong\u003e You receive one package containing 10 stainless steel cotter pins, part number 18-3741-9.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy choose a genuine Sierra cotter pin over a generic one?\u003c\/strong\u003e The Sierra 18-3741-9 is manufactured in stainless steel to hold up to marine conditions, giving a consistent fit and corrosion resistance for propeller nut retention.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988162851035,"sku":"SIE-18-3741-9","price":9.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3741-9__29460.1737842263.500.750.jpg?v=1785329183","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3741-9-stainless-steel-cotter-pin-pack-of-10-for-evinrude-johnson-outboard-prop-nut-replaces-omc-309955-314502","provider":"Good Vibes Marina","version":"1.0","type":"link"}