{"product_id":"prop-spacer-for-johnson-evinrude-omc-outboards-replaces-omc-314502-sierra-18-4228","title":"Sierra 18-4228 Prop Spacer, Replaces OMC 315810, for Johnson\/Evinrude Outboard Motors","description":"\u003cp\u003eThe Sierra 18-4228 Prop Spacer is a metal spacer designed to fit on the propeller shaft of Johnson\/Evinrude outboard motors, positioning the propeller correctly between the shaft components. It is manufactured from metal for durability and is built to withstand the salt water and fresh water conditions typical of outboard motor use. This spacer is a direct replacement for OMC part number 315810, making it a straightforward swap when rebuilding or servicing a propeller assembly. As a small but essential hardware component, the prop spacer helps maintain proper spacing and alignment along the propeller shaft, supporting correct thrust washer and prop nut engagement during reassembly. It ships as a single unit and is commonly replaced alongside other prop hardware such as the prop nut and cotter pin during routine propeller maintenance. Because propeller hardware is exposed to constant water contact and mechanical load from the spinning propeller, using a correctly sized, corrosion-resistant spacer like the 18-4228 helps ensure the propeller stays properly seated and the shaft assembly performs reliably. This part is intended for Johnson\/Evinrude outboard motors and is sold as a genuine Sierra replacement part identified by OEM equivalent number OMC 315810.\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 18-4228\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Type:\u003c\/strong\u003e Prop Spacer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Type:\u003c\/strong\u003e Gasoline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperation Mode:\u003c\/strong\u003e Manual\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Use:\u003c\/strong\u003e For Salt Water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Engine Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e Gasoline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1 count\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.02 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Equivalent Part Number:\u003c\/strong\u003e OMC 315810\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJohnson\/Evinrude Outboard Motors\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eOMC 315810\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-4228 prop spacer used for?\u003c\/strong\u003e The Sierra 18-4228 is a metal spacer that fits on the propeller shaft of Johnson\/Evinrude outboard motors to position the propeller correctly during reassembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-4228 a genuine Sierra part?\u003c\/strong\u003e Yes, 18-4228 is Sierra's own manufacturer part number for this prop spacer, not a generic aftermarket copy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM number does the Sierra 18-4228 replace?\u003c\/strong\u003e It replaces OMC 315810, so it is a direct equivalent for that OEM prop spacer number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-4228 spacer made of?\u003c\/strong\u003e It is made of metal, providing the durability needed to hold up under the constant water exposure and mechanical load of the propeller assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-4228 fit any outboard motor?\u003c\/strong\u003e The 18-4228 prop spacer is designed for Johnson\/Evinrude outboard motors specifically.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-4228 prop spacer weigh?\u003c\/strong\u003e The Sierra 18-4228 weighs 0.02 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to replace other prop hardware along with the spacer?\u003c\/strong\u003e Many installers replace the prop nut and cotter pin at the same time as the 18-4228 spacer since all three are part of the same propeller hardware assembly, though each is a separate Sierra part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many spacers come in a package of the 18-4228?\u003c\/strong\u003e The 18-4228 is sold as a single prop spacer, with a unit count of one.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-4228 spacer compatible with saltwater use?\u003c\/strong\u003e Yes, the Sierra 18-4228 is recommended for use in salt water conditions.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 18-4228 prop spacer installed?\u003c\/strong\u003e It is installed on the propeller shaft as part of the standard propeller reassembly sequence, positioned per the outboard's propeller hardware stack.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988171862235,"sku":"SIE-18-4228","price":4.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-4228_lg__89515.1558126973.500.750.jpg?v=1785188978","url":"https:\/\/www.goodvibesmarina.com\/products\/prop-spacer-for-johnson-evinrude-omc-outboards-replaces-omc-314502-sierra-18-4228","provider":"Good Vibes Marina","version":"1.0","type":"link"}