{"product_id":"mercury-35-18458t4-water-separating-fuel-filter-fits-mercury-mariner-v-6-efi-dfi-1996-newer","title":"Mercury – Water Separating Fuel Filter | Fuel System Component | Corrosion-Resistant Steel | 18458T4","description":"\u003carticle class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:78fea593-06f1-49f7-a92b-18bb5ae36e8a-88\" data-testid=\"conversation-turn-176\" data-scroll-anchor=\"true\" data-turn=\"assistant\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:--spacing(4)] thread-sm:[--thread-content-margin:--spacing(6)] thread-lg:[--thread-content-margin:--spacing(16)] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] thread-lg:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\" tabindex=\"-1\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"d00d6a71-e2b4-459f-b5f7-5772f6bb7b88\" dir=\"auto\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal [.text-message+\u0026amp;]:mt-1\" data-message-model-slug=\"gpt-5\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden first:pt-[1px]\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert w-full break-words dark markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"106\"\u003e\u003cstrong data-start=\"0\" data-end=\"104\"\u003eMercury – Water Separating Fuel Filter | Fuel System Component | Corrosion-Resistant Steel | 18458T4\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"108\" data-end=\"111\"\u003e\n\u003ch3 data-start=\"113\" data-end=\"131\"\u003e\u003cstrong data-start=\"117\" data-end=\"129\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"132\" data-end=\"674\"\u003eA clean, water-free fuel supply is the key to reliable performance on the water. The \u003cstrong data-start=\"217\" data-end=\"272\"\u003eMercury Marine 18458T4 Water Separating Fuel Filter\u003c\/strong\u003e is built to keep your engine protected and running smooth. Designed for \u003cstrong data-start=\"345\" data-end=\"414\"\u003e1996 and newer Mercury and Mariner V6 EFI\/DFI TwoStroke outboards\u003c\/strong\u003e, it captures harmful debris and separates water before it ever reaches your engine. Featuring a durable steel canister and a \u003cstrong data-start=\"540\" data-end=\"561\"\u003eblue water sensor\u003c\/strong\u003e, it delivers the same factory-level protection Mercury engineers designed into their performance fuel systems.\u003c\/p\u003e\n\u003chr data-start=\"676\" data-end=\"679\"\u003e\n\u003ch3 data-start=\"681\" data-end=\"703\"\u003e\u003cstrong data-start=\"685\" data-end=\"701\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"706\" data-end=\"802\"\u003e\n\u003cstrong data-start=\"706\" data-end=\"718\"\u003ePurpose:\u003c\/strong\u003e Removes water, dirt, and contaminants from your fuel before it enters the engine.\u003c\/li\u003e\n\u003cli data-start=\"805\" data-end=\"908\"\u003e\n\u003cstrong data-start=\"805\" data-end=\"816\"\u003eDesign:\u003c\/strong\u003e Spin-on \u003cstrong data-start=\"825\" data-end=\"867\"\u003e10-micron water-separating fuel filter\u003c\/strong\u003e with a \u003cstrong data-start=\"875\" data-end=\"905\"\u003eblue screw-in water sensor\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-start=\"911\" data-end=\"1036\"\u003e\n\u003cstrong data-start=\"911\" data-end=\"924\"\u003eMaterial:\u003c\/strong\u003e Constructed with a \u003cstrong data-start=\"944\" data-end=\"981\"\u003ecorrosion-resistant steel housing\u003c\/strong\u003e and internal epoxy coating for long-term durability.\u003c\/li\u003e\n\u003cli data-start=\"1039\" data-end=\"1131\"\u003e\n\u003cstrong data-start=\"1039\" data-end=\"1055\"\u003ePerformance:\u003c\/strong\u003e Prevents power loss, stalling, and corrosion caused by contaminated fuel.\u003c\/li\u003e\n\u003cli data-start=\"1134\" data-end=\"1228\"\u003e\n\u003cstrong data-start=\"1134\" data-end=\"1150\"\u003eEase of Use:\u003c\/strong\u003e Quick, simple replacement with standard tools — perfect for annual service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1331\" data-end=\"1334\"\u003e\n\u003ch3 data-start=\"1336\" data-end=\"1373\"\u003e\u003cstrong data-start=\"1340\" data-end=\"1371\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1376\" data-end=\"1478\"\u003e\n\u003cstrong data-start=\"1389\" data-end=\"1443\"\u003eMercury and Mariner V6 EFI\/DFI TwoStroke outboards\u003c\/strong\u003e manufactured \u003cstrong data-start=\"1457\" data-end=\"1475\"\u003e1996 and later\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-start=\"1481\" data-end=\"1568\"\u003eCommon on \u003cstrong data-start=\"1491\" data-end=\"1565\"\u003ebass boats, offshore fishing rigs, center consoles, and sport cruisers\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-start=\"1571\" data-end=\"1629\"\u003eWorks in both \u003cstrong data-start=\"1585\" data-end=\"1613\"\u003esaltwater and freshwater\u003c\/strong\u003e environments.\u003c\/li\u003e\n\u003cli data-start=\"1632\" data-end=\"1694\"\u003eBuilt for systems using the \u003cstrong data-start=\"1660\" data-end=\"1691\"\u003eblue water sensor connector\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1696\" data-end=\"1699\"\u003e\n\u003ch3 data-start=\"1701\" data-end=\"1743\"\u003e\u003cstrong data-start=\"1705\" data-end=\"1741\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1744\" data-end=\"2073\"\u003eThe \u003cstrong data-start=\"1748\" data-end=\"1771\"\u003e18458T4 fuel filter\u003c\/strong\u003e does the critical job of keeping your fuel system clean and dry. The 10-micron filtration element traps microscopic particles while separating water that can rob power or corrode injectors. The integrated blue water sensor detects moisture early, helping you avoid potential damage before it starts.\u003c\/p\u003e\n\u003cp data-start=\"2075\" data-end=\"2354\"\u003eOnce installed, you’ll notice smoother acceleration, more consistent power, and fewer fuel-related issues. With its heavy-duty coating and marine-grade construction, it’s designed to last through long seasons on the water — whether you’re trolling all day or running wide open.\u003c\/p\u003e\n\u003chr data-start=\"2356\" data-end=\"2359\"\u003e\n\u003ch3 data-start=\"2361\" data-end=\"2382\"\u003e\u003cstrong data-start=\"2365\" data-end=\"2380\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2383\" data-end=\"2675\"\u003eNot all filters are created equal. Generic or automotive filters might look similar but can’t match Mercury’s marine-grade engineering. The \u003cstrong data-start=\"2523\" data-end=\"2534\"\u003e18458T4\u003c\/strong\u003e is a \u003cstrong data-start=\"2540\" data-end=\"2571\"\u003egenuine Mercury Marine part\u003c\/strong\u003e, built specifically for the pressures, flow rates, and corrosion challenges of EFI and DFI outboards.\u003c\/p\u003e\n\u003cp data-start=\"2677\" data-end=\"2929\"\u003eMercury tests every component under real-world marine conditions — salt, vibration, and ethanol-blended fuels — to ensure flawless performance. With OEM parts, you get the right fit, filtration accuracy, and long-term protection your engine deserves.\u003c\/p\u003e\n\u003chr data-start=\"2931\" data-end=\"2934\"\u003e\n\u003ch3 data-start=\"2936\" data-end=\"2949\"\u003e\u003cstrong data-start=\"2940\" data-end=\"2947\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2951\" data-end=\"3109\"\u003e\u003cstrong data-start=\"2951\" data-end=\"2994\"\u003eQ1: Which engines does this filter fit?\u003c\/strong\u003e\u003cbr data-start=\"2994\" data-end=\"2997\"\u003eIt fits \u003cstrong data-start=\"3005\" data-end=\"3074\"\u003e1996 and newer Mercury and Mariner V6 EFI\/DFI TwoStroke outboards\u003c\/strong\u003e using the blue sensor connector.\u003c\/p\u003e\n\u003cp data-start=\"3111\" data-end=\"3254\"\u003e\u003cstrong data-start=\"3111\" data-end=\"3151\"\u003eQ2: What’s included with the filter?\u003c\/strong\u003e\u003cbr data-start=\"3151\" data-end=\"3154\"\u003eIt includes the \u003cstrong data-start=\"3170\" data-end=\"3212\"\u003e10-micron water-separating fuel filter\u003c\/strong\u003e and the \u003cstrong data-start=\"3221\" data-end=\"3251\"\u003eblue screw-in water sensor\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"3256\" data-end=\"3377\"\u003e\u003cstrong data-start=\"3256\" data-end=\"3294\"\u003eQ3: How often should I replace it?\u003c\/strong\u003e\u003cbr data-start=\"3294\" data-end=\"3297\"\u003eReplace it \u003cstrong data-start=\"3308\" data-end=\"3339\"\u003eannually or every 100 hours\u003c\/strong\u003e of use to maintain clean fuel flow.\u003c\/p\u003e\n\u003cp data-start=\"3379\" data-end=\"3588\"\u003e\u003cstrong data-start=\"3379\" data-end=\"3444\"\u003eQ4: What’s the difference between this and the 18458T3 model?\u003c\/strong\u003e\u003cbr data-start=\"3444\" data-end=\"3447\"\u003eThe \u003cstrong data-start=\"3451\" data-end=\"3462\"\u003e18458T4\u003c\/strong\u003e uses a \u003cstrong data-start=\"3470\" data-end=\"3491\"\u003eblue water sensor\u003c\/strong\u003e for newer (post-1996) engines, while the \u003cstrong data-start=\"3533\" data-end=\"3544\"\u003e18458T3\u003c\/strong\u003e uses a \u003cstrong data-start=\"3552\" data-end=\"3568\"\u003eblack sensor\u003c\/strong\u003e for older models.\u003c\/p\u003e\n\u003cp data-start=\"3590\" data-end=\"3727\"\u003e\u003cstrong data-start=\"3590\" data-end=\"3637\"\u003eQ5: Is it suitable for saltwater operation?\u003c\/strong\u003e\u003cbr data-start=\"3637\" data-end=\"3640\"\u003eYes — it’s coated inside and out to resist corrosion and withstand marine conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/article\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":45626521190691,"sku":"35-18458T4","price":29.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/18458t4_main.jpg?v=1760631177","url":"https:\/\/partsvu.com\/en-mx\/products\/mercury-35-18458t4-water-separating-fuel-filter-fits-mercury-mariner-v-6-efi-dfi-1996-newer","provider":"PartsVu","version":"1.0","type":"link"}