{"product_id":"sierra-18-3381-water-pump-kit-without-housing-for-johnson-evinrude-outboard-replaces-omc-393509","title":"Sierra 18-3381 Water Pump Kit without Housing, Replaces 393509, for Johnson\/Evinrude Outboard Motors","description":"\u003cp\u003eThe Sierra 18-3381 Water Pump Kit is a without-housing replacement kit built for Johnson\/Evinrude outboard motors. Because it is supplied without housing, it is intended for rebuilding an existing water pump housing rather than replacing the housing itself, making it a focused, cost-effective option for outboard owners who only need to renew the wear components of their water pump. The kit contains an impeller (OE equivalent 395289) along with the other components needed to restore proper cooling flow. Components are built with precision and marine-grade materials, and the kit meets or exceeds original equipment quality standards. The 18-3381 kit directly replaces OMC 393509, so it can be used as a straightforward like-for-like renewal part during routine water pump maintenance. At 0.54 pounds, it ships as a compact maintenance kit. This kit is a practical choice for boat owners performing scheduled water pump service on their Johnson or Evinrude outboard, restoring reliable engine cooling without the expense of a full housing replacement.\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 18-3381\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing Included:\u003c\/strong\u003e No (without housing)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Includes:\u003c\/strong\u003e Impeller (OE equivalent 395289)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.54 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999753588\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGTIN:\u003c\/strong\u003e 00030999753588\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Johnson\/Evinrude outboard motors.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e393509\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3381 water pump kit include?\u003c\/strong\u003e The kit includes an impeller with OE equivalent 395289 along with the other components needed to rebuild the water pump; the Sierra 18-3381 is supplied without the pump housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3381 kit come with the water pump housing?\u003c\/strong\u003e No, the Sierra 18-3381 is a without-housing kit, meaning it is meant to renew the wear components of an existing water pump housing rather than replace the housing itself.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does Sierra 18-3381 replace?\u003c\/strong\u003e Sierra 18-3381 replaces OMC 393509.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3381 water pump kit weigh?\u003c\/strong\u003e The Sierra 18-3381 water pump kit weighs 0.54 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich outboard motors is the 18-3381 water pump kit designed for?\u003c\/strong\u003e This kit is designed for Johnson\/Evinrude outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3381 an OEM part or an aftermarket replacement?\u003c\/strong\u003e The 18-3381 is an aftermarket Sierra replacement kit built to meet or exceed original equipment quality standards.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the impeller's OE equivalent number in this kit?\u003c\/strong\u003e The impeller included in the Sierra 18-3381 kit has an OE equivalent number of 395289.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3381 water pump kit?\u003c\/strong\u003e The UPC for the Sierra 18-3381 water pump kit is 030999753588.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAre the components in the 18-3381 kit made from marine-grade material?\u003c\/strong\u003e Yes, the components in the Sierra 18-3381 water pump kit are built with marine-grade material and precision construction.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I choose a without-housing kit like the 18-3381 instead of a full housing kit?\u003c\/strong\u003e The Sierra 18-3381 is intended for rebuilding an existing water pump housing that is still serviceable, so it omits the housing to keep the kit focused on the wear components that typically need renewal.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988146401499,"sku":"SIE-18-3381","price":41.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3381_lg__20819.1558127238.500.750.jpg?v=1785188114","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3381-water-pump-kit-without-housing-for-johnson-evinrude-outboard-replaces-omc-393509","provider":"Good Vibes Marina","version":"1.0","type":"link"}