{"product_id":"sierra-18-8042-brass-hose-barb-connector-1-4-npt","title":"Sierra 18-8042 Brass Hose Barb Connector 1\/4 NPT","description":"\u003cp class=\"nvn-hero\"\u003eThe Sierra 18-8042 is a straight brass hose barb connector with a 1\/4 inch NPT male thread on one end and a 1\/4 inch hose barb on the other. It's the little fitting that ties your fuel line into a threaded port, built in brass so it holds up to years of marine gas and damp salt air.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe Sierra 18-8042 is a straight brass hose barb connector, and it does one job well. One end is a 1\/4 inch NPT male thread. The other is a 1\/4 inch hose barb. Thread it into a tapped port, push your 1\/4 inch fuel line onto the barb, clamp it down, and you've got a clean, leak-free transition from hard plumbing to flexible hose.\u003c\/p\u003e\n\u003cp\u003eIf you've ever chased a weeping fuel fitting on an older boat, you know how much a good connector matters. This is the kind of part that lives behind the scenes. You don't think about it until it starts seeping, and then it's the only thing you think about. The 18-8042 is machined from brass, which is exactly what you want in a marine fuel system. Brass shrugs off the gasoline, the ethanol, and the damp environment that eats cheaper fittings alive.\u003c\/p\u003e\n\u003cp\u003eWhere does it go? Anywhere you need to take a 1\/4 inch NPT threaded port and hand it off to a 1\/4 inch inside-diameter hose. That covers a lot of ground on a boat. Fuel filter heads, water-separating filter bases, primer bulb plumbing, fuel pump inlets and outlets, carburetor feed lines, and auxiliary tank fittings all commonly use a 1\/4 inch NPT port. If the port is 1\/4 NPT and your line is 1\/4 ID, this is your fitting.\u003c\/p\u003e\n\u003cp\u003eThe body is straight, so it's meant for runs where the hose continues roughly in line with the port. If your layout needs the hose to turn a corner, you'd reach for an elbow instead. But for a straight shot, a straight barb keeps flow smooth and keeps one less bend in the system. Fewer bends mean fewer places for fuel to hang up or for a line to kink.\u003c\/p\u003e\n\u003cp\u003eInstalling it is straightforward, but a couple of details matter. On the NPT end, use a fuel-rated thread sealant or PTFE tape rated for gasoline. NPT threads seal on the taper, not the face, so you want sealant in there to fill the thread flanks and lock out any weep. Don't overtighten. Brass is softer than steel, and you can distort the threads if you lean on it with a big wrench. Snug it, check for leaks under pressure, and give it another small turn only if you need to.\u003c\/p\u003e\n\u003cp\u003eOn the barb end, slide your 1\/4 inch fuel hose all the way onto the barb and secure it with a proper fuel-line clamp. A barb holds a hose by friction and by that little ridge, but on a boat you always back it up with a clamp. Marine vibration and heat cycles will work a hose loose over time if you skip the clamp. Use a hose that's genuinely rated for fuel, and match the 1\/4 inch inside diameter so the hose seats tight on the barb without ballooning.\u003c\/p\u003e\n\u003cp\u003eNot sure if this is the right fitting? Measure two things. First, the thread. A 1\/4 inch NPT male thread measures about 0.54 inch across the outside of the threads, because NPT sizing is nominal and doesn't match a ruler. Second, your hose. Measure the inside diameter, not the outside. If you've got a 1\/4 inch ID line and a 1\/4 inch NPT female port, the 18-8042 drops right in. If either number is different, you'll want a different barb size or thread size, and Sierra makes those too.\u003c\/p\u003e\n\u003cp\u003eSierra builds this as a replacement fitting that meets or exceeds the original equipment part it stands in for. That's the whole Sierra story. They supply engine builders and boat builders, and their aftermarket parts are cut to the same standard. So when you're rebuilding a fuel run or swapping out a tired old fitting, you're not downgrading. You're putting back a part made to the same spec as what came off.\u003c\/p\u003e\n\u003cp\u003eIt's sold as a single fitting, so count your connection points before you order. A typical fuel filter swap or primer bulb job might need two or three of these. Grab what your plumbing calls for, a roll of fuel-rated sealant, and a couple of clamps, and you've got everything you need to button up a tidy 1\/4 inch fuel connection that'll last.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e1\/4 inch NPT male thread on one end for threading into a tapped fuel-system port\u003c\/li\u003e\n  \u003cli\u003e1\/4 inch hose barb on the other end for 1\/4 inch inside-diameter fuel line\u003c\/li\u003e\n  \u003cli\u003eStraight body for in-line hose runs with smooth, unrestricted flow\u003c\/li\u003e\n  \u003cli\u003eMachined from brass for corrosion resistance against marine fuel and salt air\u003c\/li\u003e\n  \u003cli\u003eMeets or exceeds the original equipment part it replaces\u003c\/li\u003e\n  \u003cli\u003eSold as a single fitting so you can buy exactly the count your plumbing needs\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\u003eWhat size hose does the Sierra 18-8042 fit?\u003c\/summary\u003e\n    \u003cp\u003eThe barb end is sized for 1\/4 inch inside-diameter fuel hose. Measure the inside diameter of your line, slide it fully onto the barb, and secure it with a fuel-line clamp.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat thread does it use?\u003c\/summary\u003e\n    \u003cp\u003eIt's a 1\/4 inch NPT male thread. That threads into a 1\/4 inch NPT female port, which is a common size on fuel filter heads, pumps, and tank fittings.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this fitting straight or angled?\u003c\/summary\u003e\n    \u003cp\u003eIt's straight. The hose runs roughly in line with the threaded port. If your layout needs the line to turn a corner, you'd want an elbow fitting instead.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is it made of?\u003c\/summary\u003e\n    \u003cp\u003eBrass. Brass stands up well to gasoline, ethanol blends, and the damp salt environment on a boat, which is why it's the standard material for marine fuel fittings.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need thread sealant on the NPT end?\u003c\/summary\u003e\n    \u003cp\u003eYes. Use a fuel-rated thread sealant or PTFE tape rated for gasoline on the NPT threads. NPT seals on the taper, so sealant fills the thread flanks and keeps the joint from weeping.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need a hose clamp on the barb end?\u003c\/summary\u003e\n    \u003cp\u003eYes. Always back up a barb with a proper fuel-line clamp on a boat. Vibration and heat cycles will work an unclamped hose loose over time.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs it sold individually or as a set?\u003c\/summary\u003e\n    \u003cp\u003eIt's sold as a single fitting. Count your connection points before ordering, since a typical fuel filter or primer bulb job can need two or three.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use it in a marine fuel system?\u003c\/summary\u003e\n    \u003cp\u003eYes. It's a brass fuel-line fitting built for marine use, and it meets or exceeds the original equipment part it replaces. Pair it with fuel-rated hose and sealant.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I know if the 18-8042 is the right fitting for my setup?\u003c\/summary\u003e\n    \u003cp\u003eCheck two things. Your port should be 1\/4 inch NPT female, and your hose should be 1\/4 inch inside diameter. If both match, this fitting drops right in. If either is different, you'll need a different thread or barb size.\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 18-8042 Hose Barb Connector, 1\/4 Inch NPT Male to 1\/4 Inch Barb, Straight, Brass\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eSierra\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e18-8042\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e808282368722\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFitting Type\u003c\/th\u003e\n\u003ctd\u003eHose Barb Connector\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eThread Size\u003c\/th\u003e\n\u003ctd\u003e1\/4 Inch NPT\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eThread Type\u003c\/th\u003e\n\u003ctd\u003eMale\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHose Barb Size\u003c\/th\u003e\n\u003ctd\u003e1\/4 Inch\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003ctd\u003eStraight\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConnection\u003c\/th\u003e\n\u003ctd\u003e1\/4 Inch NPT Male to 1\/4 Inch Hose Barb\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eBrass\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eGold\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSold As\u003c\/th\u003e\n\u003ctd\u003eSingle\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\": \"What size hose does the Sierra 18-8042 fit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The barb end is sized for 1\/4 inch inside-diameter fuel hose. Measure the inside diameter of your line, slide it fully onto the barb, and secure it with a fuel-line clamp.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What thread does it use?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a 1\/4 inch NPT male thread. That threads into a 1\/4 inch NPT female port, which is a common size on fuel filter heads, pumps, and tank fittings.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this fitting straight or angled?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's straight. The hose runs roughly in line with the threaded port. If your layout needs the line to turn a corner, you'd want an elbow fitting instead.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is it made of?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Brass. Brass stands up well to gasoline, ethanol blends, and the damp salt environment on a boat, which is why it's the standard material for marine fuel fittings.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do I need thread sealant on the NPT end?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Use a fuel-rated thread sealant or PTFE tape rated for gasoline on the NPT threads. NPT seals on the taper, so sealant fills the thread flanks and keeps the joint from weeping.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do I need a hose clamp on the barb end?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Always back up a barb with a proper fuel-line clamp on a boat. Vibration and heat cycles will work an unclamped hose loose over time.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is it sold individually or as a set?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's sold as a single fitting. Count your connection points before ordering, since a typical fuel filter or primer bulb job can need two or three.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I use it in a marine fuel system?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. It's a brass fuel-line fitting built for marine use, and it meets or exceeds the original equipment part it replaces. Pair it with fuel-rated hose and sealant.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How do I know if the 18-8042 is the right fitting for my setup?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Check two things. Your port should be 1\/4 inch NPT female, and your hose should be 1\/4 inch inside diameter. If both match, this fitting drops right in. If either is different, you'll need a different thread or barb size.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Sierra","offers":[{"title":"Default Title","offer_id":67597748469853,"sku":"2010984","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_e441a937-a861-45d4-9f0e-7049035f8ba2.jpg?v=1790921674","url":"https:\/\/nvnmarine.com\/products\/sierra-18-8042-brass-hose-barb-connector-1-4-npt","provider":"NVN Marine","version":"1.0","type":"link"}