{"product_id":"sierra-international-18-7946-fuel-water-separator-filter-10-micron-1-12-thread","title":"Sierra International 18-7946 Fuel Water Separator Filter – 10 Micron, 1-12 Thread","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eDesigned to replace OMC 502905, the Sierra International 18-7946 Fuel Water Separator Filter combines a 10 micron filtration rating with a 1-12 inch thread to fit common marine fuel lines. This product is built for boats and outboard installations where clean fuel and water separation matter in daily operation.\u003c\/p\u003e\n\u003cp\u003eIn practical sailing and boating scenarios, maintaining fuel cleanliness can contribute to smoother starts and steadier idle, especially when engines operate in variable conditions. While outcomes depend on multiple factors, using a trusted Sierra part in the fuel path is a practical step many boaters consider as part of routine maintenance.\u003c\/p\u003e\n\n\u003ch2\u003eKey details\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eRating: 10 Micron\u003c\/li\u003e\n  \u003cli\u003eThread Pitch: 1-12 inch\u003c\/li\u003e\n  \u003cli\u003eReplaces: OMC 502905\u003c\/li\u003e\n  \u003cli\u003eWarranty: All Sierra parts qualify for Sierra's industry-leading customer satisfaction warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor fit and compatibility, refer to the product page guidance. To ensure this filter will work with your application, visit Amazon’s SONAR parts finder at fit-guideseastarsolutionscom.\u003c\/p\u003e\n\n\u003ch2\u003eUsage and potential benefits\u003c\/h2\u003e\n\u003cp\u003eIntegrating the Sierra 18-7946 into the fuel path creates a barrier that helps separate water from fuel before it reaches the engine. Possible benefits include cleaner fuel delivery to the pump and injectors, reduced moisture in the fuel system, and more consistent fuel flow under varying operating conditions. These are possibilities rather than guarantees and depend on the broader health of your fuel system and operating environment.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCompatible with marine fuel systems and Sierra parts ecosystem\u003c\/li\u003e\n  \u003cli\u003eDesigned for reliable performance in both saltwater and freshwater environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eNotes on fit and maintenance\u003c\/h2\u003e\n\u003cp\u003eBefore purchasing, verify your system’s thread and compatibility. The thread pitch is listed as 1-12 inch, and this filter is intended as a replacement for OMC 502905. For support and warranty information, Sierra provides customer satisfaction assistance on this part.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation and care tips\u003c\/h3\u003e\n\u003cp\u003eHandle the new filter with clean hands, ensure seals are correctly seated, and replace during planned maintenance intervals to maintain filtration efficiency. A correctly installed filter supports steady fuel flow and helps minimize fuel-related interruptions during boating trips.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is the Sierra 18-7946 fuel water separator filter?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: A replacement filter with a 10 micron rating and 1-12 inch thread, designed to replace OMC 502905 in marine fuel systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How can I verify it fits my engine?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use Amazon's SONAR finder at fit-guideseastarsolutionscom to confirm compatibility with your application.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":42465561313365,"sku":"B002IV6GVG","price":28.32,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/sierra-18-7946-fuel-water-separator-front-view.jpg?v=1778011977","url":"https:\/\/plentytorque.co.uk\/products\/sierra-international-18-7946-fuel-water-separator-filter-10-micron-1-12-thread","provider":"PlentyTorque","version":"1.0","type":"link"}