{"product_id":"sierra-18-8012ep-2-mercury-fuel-line-assembly-8ft","title":"Sierra 18-8012EP-2 Mercury Fuel Line Assembly 8ft","description":"\u003cp class=\"nvn-hero\"\u003eThe Sierra 18-8012EP-2 is a complete 8-foot EPA fuel line assembly built for Mercury outboard engines. It ships ready to run with the primer bulb, hose barb, and both NPT end fittings already installed. The THV barrier and CPE cover stand up to today's ethanol pump gas, so you get a clean, compliant replacement that goes on with hand tools.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eIf you've ever chased down a hard hot restart or caught a whiff of gas in the bilge, you already know the fuel line is one of those parts you don't think about until it fails. This is the Sierra 18-8012EP-2, an 8-foot EPA fuel line assembly built for Mercury outboard engines. It comes ready to run, with the primer bulb, the hose barb, and both end fittings already fitted, so you're not sourcing parts from three different bins to get your boat back on the water.\u003c\/p\u003e\n\u003cp\u003eThe hose itself is a rubber core wrapped in polyester braid, then jacketed in a weather-resistant CPE cover. Inside that stack sits a flexible THV barrier layer. That barrier is the part that matters most these days. Modern pump gas carries ethanol, and ethanol is hard on old-style fuel line, drying it out and letting fuel vapor permeate right through the wall. The THV layer is what keeps this hose EPA compliant and keeps the fumes where they belong, inside the line. If your boat still runs the original line from a decade ago, you can usually smell the difference the first time you open the hatch after a hot day.\u003c\/p\u003e\n\u003cp\u003eFitment is straightforward. The engine end is a 1\/8 inch NPT connection sized for Mercury outboards, and the tank end is a 1\/4 inch NPT fitting for your portable or built-in tank pickup. The 8-foot length is the sweet spot for most 18 to 22 foot center consoles, giving you enough slack to route cleanly behind the console and around the transom without leaving a big loop to chafe. On smaller tiller boats you'll have some extra to trim and manage, and on bigger rigs with long runs you'll want to plan the routing so you're not fighting vapor lock on a hot restart.\u003c\/p\u003e\n\u003cp\u003eA few install notes from folks who rig these regularly. The polyester braid gives the hose good strength, but it can kink if you force a tight bend behind a console, so pre-form your bends and let the hose settle before you clamp everything down. The 1\/8 inch NPT engine fitting is the spot that most often weeps if you rush it, so use a marine-grade thread sealant and snug it to roughly 5 to 7 ft-lb rather than gorilla-torquing it. Where the line passes a transom cutout or a sharp aluminum edge, add a grommet or a bit of chafe guard. The CPE cover shrugs off a lot, but a raw edge under vibration will win eventually.\u003c\/p\u003e\n\u003cp\u003eThe EPA primer bulb is the squeeze bulb you'll use to prime the fuel system before that first start of the day. It's built to the same emissions standard as the rest of the assembly. One honest note: any EPA-style bulb adds a little more restriction than the old open-flow bulbs, which is a non-issue on the vast majority of outboards. It's simply the trade-off that comes with a sealed, low-permeation fuel system, and it's what keeps the whole assembly street legal and dock legal.\u003c\/p\u003e\n\u003cp\u003eOne more thing worth doing, keep the assembly out of constant direct sun when you can. Like any rubber fuel component, the bulb and cover last longest when they're not baking under UV all season, so a console cover or a bit of shade over the rigging area pays off in the long run.\u003c\/p\u003e\n\u003cp\u003eWho's this for? Anyone running a Mercury outboard who's replacing a tired, cracked, or non-compliant fuel line, or rigging a new-to-you boat and wanting to start with fresh fuel plumbing. It's also the right call after a line has failed an inspection, since this one meets the current EPA low-permeation requirement out of the box. Sierra builds their parts to meet or exceed the original equipment they replace, and they supply a lot of the OEM engine and boat builders directly, so you're getting a part cut to the same standard as what came on the boat.\u003c\/p\u003e\n\u003cp\u003eWhat it's not: it's not a universal quick-connect kit for every motor, and it's not a fix for a fuel problem that lives somewhere else, like a clogged tank pickup or a failing fuel pump. If you're chasing a fuel delivery issue, replace the line as part of a full look at the system, not as a guess. But if the line is the problem, or it's simply old and you want peace of mind, this is a clean, complete, compliant replacement that goes on with hand tools in an afternoon.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e8-foot overall length, enough slack to route cleanly behind the console on most 18 to 22 foot center consoles\u003c\/li\u003e\n  \u003cli\u003e3\/8 inch inside diameter hose, sized for the fuel flow demands of Mercury outboard engines\u003c\/li\u003e\n  \u003cli\u003eFlexible THV barrier layer, blocks ethanol vapor permeation and keeps the line EPA compliant\u003c\/li\u003e\n  \u003cli\u003eWeather-resistant CPE outer cover, resists chafe, UV, and the abuse of an open rigging area\u003c\/li\u003e\n  \u003cli\u003ePolyester braid reinforcement, adds strength and pressure resistance without a heavy, stiff wall\u003c\/li\u003e\n  \u003cli\u003e1\/8 inch NPT engine-end fitting, matched to Mercury outboard fuel inlets\u003c\/li\u003e\n  \u003cli\u003e1\/4 inch NPT tank-end fitting, connects to portable or built-in tank pickups\u003c\/li\u003e\n  \u003cli\u003eEPA primer bulb included, prime the fuel system before the first start of the day\u003c\/li\u003e\n  \u003cli\u003eHose barb and both fittings pre-installed, a complete assembly that installs with hand tools\u003c\/li\u003e\n  \u003cli\u003eMeets or exceeds the original equipment fuel line it replaces, Sierra's OEM-grade standard\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Sierra Marine reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhich engines does this fuel line fit?\u003c\/summary\u003e\n    \u003cp\u003eIt's built for Mercury outboard engines, with a 1\/8 inch NPT engine-end fitting sized for those motors and a 1\/4 inch NPT fitting on the tank end.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this fuel line EPA compliant?\u003c\/summary\u003e\n    \u003cp\u003eYes. It uses a flexible THV barrier layer and an EPA primer bulb to meet the current low-permeation emissions requirement, so it passes where old-style line won't.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow long is the hose?\u003c\/summary\u003e\n    \u003cp\u003e8 feet, which is a good match for most 18 to 22 foot center consoles and leaves enough slack to route neatly behind the console.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the inside diameter?\u003c\/summary\u003e\n    \u003cp\u003e3\/8 inch, sized for the fuel flow of Mercury outboard engines.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it come with a primer bulb?\u003c\/summary\u003e\n    \u003cp\u003eYes, an EPA primer bulb and hose barb are included. It's a complete assembly, not just bulk hose.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill it handle ethanol-blended fuel?\u003c\/summary\u003e\n    \u003cp\u003eYes. The THV barrier layer and CPE cover are built to stand up to today's ethanol pump gas, where older line dries out and lets vapor through.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat fittings are on each end?\u003c\/summary\u003e\n    \u003cp\u003eA 1\/8 inch NPT connection on the engine end and a 1\/4 inch NPT connection on the tank end.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy does the primer bulb feel firmer than my old one?\u003c\/summary\u003e\n    \u003cp\u003eEPA-compliant bulbs add a little more restriction than old open-flow bulbs. That's normal and part of what keeps the assembly low-permeation and compliant.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAny tips to make it last?\u003c\/summary\u003e\n    \u003cp\u003ePre-form tight bends so the braid doesn't kink, add a grommet or chafe guard where it crosses a sharp edge, and keep it out of constant direct sun when you can.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eSierra 18-8012EP-2 EPA Fuel Line Assembly for Mercury Outboards\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eSierra Marine\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e18-8012EP-2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e808282369507\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eFor Use With Mercury Outboard Engines\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e8 Foot\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eInside Diameter\u003c\/th\u003e\n\u003ctd\u003e3\/8 Inch\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHose Material\u003c\/th\u003e\n\u003ctd\u003eRubber Fuel Line\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eReinforcement\u003c\/th\u003e\n\u003ctd\u003ePolyester Braid\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eOuter Cover\u003c\/th\u003e\n\u003ctd\u003eWeather Resistant CPE Cover\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBarrier Layer\u003c\/th\u003e\n\u003ctd\u003eFlexible THV Barrier Layer\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eEngine End Fitting\u003c\/th\u003e\n\u003ctd\u003e1\/8 Inch NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eTank End Fitting\u003c\/th\u003e\n\u003ctd\u003e1\/4 Inch NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePrimer Bulb\u003c\/th\u003e\n\u003ctd\u003eEPA Primer Bulb Included\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHose Barb\u003c\/th\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eEmissions Compliance\u003c\/th\u003e\n\u003ctd\u003eEPA Compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eFuel Line Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Which engines does this fuel line fit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's built for Mercury outboard engines, with a 1\/8 inch NPT engine-end fitting sized for those motors and a 1\/4 inch NPT fitting on the tank end.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this fuel line EPA compliant?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. It uses a flexible THV barrier layer and an EPA primer bulb to meet the current low-permeation emissions requirement, so it passes where old-style line won't.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How long is the hose?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"8 feet, which is a good match for most 18 to 22 foot center consoles and leaves enough slack to route neatly behind the console.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is the inside diameter?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"3\/8 inch, sized for the fuel flow of Mercury outboard engines.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it come with a primer bulb?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes, an EPA primer bulb and hose barb are included. It's a complete assembly, not just bulk hose.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will it handle ethanol-blended fuel?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. The THV barrier layer and CPE cover are built to stand up to today's ethanol pump gas, where older line dries out and lets vapor through.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What fittings are on each end?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A 1\/8 inch NPT connection on the engine end and a 1\/4 inch NPT connection on the tank end.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why does the primer bulb feel firmer than my old one?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"EPA-compliant bulbs add a little more restriction than old open-flow bulbs. That's normal and part of what keeps the assembly low-permeation and compliant.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Any tips to make it last?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Pre-form tight bends so the braid doesn't kink, add a grommet or chafe guard where it crosses a sharp edge, and keep it out of constant direct sun when you can.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Sierra Marine","offers":[{"title":"Default Title","offer_id":45069967294557,"sku":"2009075","price":53.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_102dadb1-1db2-46da-ba7a-b7e490658037.jpg?v=1789701692","url":"https:\/\/nvnmarine.com\/products\/sierra-18-8012ep-2-mercury-fuel-line-assembly-8ft","provider":"NVN Marine","version":"1.0","type":"link"}