{"product_id":"dometic-masterflush-8740-macerating-marine-toilet","title":"Dometic MasterFlush 8740 Electric Macerating Marine Toilet","description":"\u003cp class=\"nvn-hero\"\u003eThe Dometic MasterFlush 8740 is a permanent, standard-height electric macerating marine toilet with a full ceramic bowl. It macerates and pumps waste on demand at the touch of a button, so you can install it well away from the holding tank and enjoy household-style comfort onboard.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe Dometic MasterFlush 8740 brings the comfort of a home bathroom to your boat. It's a permanent, standard-height electric toilet built around Dometic's MasterFlush macerating system, which grinds and pumps waste in a single push-button cycle. Because the macerator does the heavy lifting, the 8740 doesn't need to sit directly over the holding tank. You can mount it wherever the layout of your head compartment makes the most sense and route the discharge line to a tank somewhere else on the vessel.\u003c\/p\u003e\n\u003cp\u003eComfort was clearly the goal here. The bowl is full-size ceramic with an elongated shape and a seat height of about 19 inches, which is very close to what you'd find in a residential bathroom. If you've ever stepped off a boat with a cramped, low household toilet and wished for something more familiar, this is the piece that fixes it. The glazed ceramic surface wipes clean easily and resists staining and odor far better than plastic bowls, so the head stays fresh through a long weekend or a full season of use.\u003c\/p\u003e\n\u003cp\u003eThe macerating action is the real story. Inside the base, an electric pump with a stainless steel cutting blade reduces waste and paper to a slurry before moving it out through the discharge line. That means smaller-diameter plumbing, longer runs, and fewer clogs than a gravity or manual toilet can manage. It also gives you flexibility to install the head above, below, or well away from the tank. Two flush modes let you choose how much water each cycle uses. A normal flush clears the bowl completely, while a low flush conserves fresh water when you're watching tank capacity on a longer trip.\u003c\/p\u003e\n\u003cp\u003eThe 8740 draws fresh water for flushing, which keeps sea-water odor and marine growth out of the bowl and the plumbing. It runs on a standard 12-volt DC supply, so it ties straight into your boat's house battery system without an inverter or separate power source. Operation couldn't be simpler. You press the flush control, the toilet adds water, macerates, and pumps in one smooth cycle, then refills the bowl and shuts off. There's no pumping a handle and no guessing whether the bowl is truly clear.\u003c\/p\u003e\n\u003cp\u003eInstallation follows familiar Dometic conventions. The footprint measures roughly 14-3\/4 inches wide by 21-1\/2 inches deep, so it drops into most existing head compartments, and the standard fresh-water and discharge fittings make it a sensible upgrade from an older manual or gravity unit. If you're replacing a tired toilet that clogs, smells, or takes a dozen hand pumps to clear, moving to the MasterFlush 8740 is a noticeable step up in daily comfort.\u003c\/p\u003e\n\u003cp\u003eThis is a toilet you'll appreciate most on the water, when guests are aboard and you want the head to just work. It's quiet enough not to wake the whole cabin, efficient enough to protect your fresh-water supply, and built by a company that has focused on onboard sanitation since 1960. Dometic engineers these systems alongside boat builders, so the fit, the fittings, and the long-term reliability all reflect real marine use rather than a repurposed household design.\u003c\/p\u003e\n\u003cp\u003eA few practical notes help you get the most from it. Size your discharge line and holding tank to match the pump's output, keep the fresh-water supply clean, and run the toilet regularly so seals stay conditioned during downtime. Because it's a permanent unit rather than a portable one, plan the plumbing and the 12-volt wiring as part of a proper install, ideally on a dedicated circuit with an appropriately rated breaker. Done right, the payoff is a head that stays quiet, clears fully every time, and asks very little of you across seasons of use. It's the kind of upgrade guests notice the first time they use it.\u003c\/p\u003e\n\u003cp\u003eFor a permanent installation where you want dependable, push-button convenience and a genuinely comfortable seat, the MasterFlush 8740 is a strong choice. Pair it with a properly sized holding tank and the correct discharge plumbing and you've got a marine head that behaves like the one at home.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003ePermanent standard-height electric macerating marine toilet\u003c\/li\u003e\n  \u003cli\u003eFull-size ceramic bowl with elongated shape for household-style comfort\u003c\/li\u003e\n  \u003cli\u003eSeat height of about 19 inches, close to a residential toilet\u003c\/li\u003e\n  \u003cli\u003eIntegrated electric macerator with stainless steel cutting blade for clog-free discharge\u003c\/li\u003e\n  \u003cli\u003ePush-button flush completes water, macerate, and pump in one cycle\u003c\/li\u003e\n  \u003cli\u003eTwo flush modes, normal and low, to manage fresh-water and tank capacity\u003c\/li\u003e\n  \u003cli\u003eFresh-water flush keeps odor and marine growth out of the bowl\u003c\/li\u003e\n  \u003cli\u003eRuns on standard 12-volt DC boat power, no inverter needed\u003c\/li\u003e\n  \u003cli\u003eSmall-diameter discharge plumbing allows longer runs and flexible mounting away from the tank\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 Dometic 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 makes the MasterFlush 8740 a macerating toilet?\u003c\/summary\u003e\n    \u003cp\u003eIt has an electric pump with a stainless steel cutting blade built into the base. When you flush, it grinds waste and paper into a slurry and pumps it out through the discharge line, which allows smaller plumbing and longer runs than a gravity toilet.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a standard-height or low-profile toilet?\u003c\/summary\u003e\n    \u003cp\u003eThe 8740 is the standard-height model. Its seat sits at roughly 19 inches, which is very close to a residential bathroom toilet and more comfortable for most adults than a low-profile marine unit.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it use fresh water or sea water to flush?\u003c\/summary\u003e\n    \u003cp\u003eIt flushes with fresh water from your boat's supply. Using fresh water keeps sea-water odor and marine growth out of the bowl and plumbing, so the head stays cleaner over time.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat power does it need?\u003c\/summary\u003e\n    \u003cp\u003eThe toilet runs on a standard 12-volt DC supply and connects directly to your house battery system. You don't need an inverter or a separate power source to operate it.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I install it away from the holding tank?\u003c\/summary\u003e\n    \u003cp\u003eYes. Because the macerator pumps waste through small-diameter plumbing, you can mount the toilet above, below, or well away from the tank and route the discharge line to wherever the tank is located.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are the two flush modes for?\u003c\/summary\u003e\n    \u003cp\u003eA normal flush clears the bowl completely, while a low flush uses less water to conserve your fresh-water supply and slow how quickly the holding tank fills on longer trips.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the bowl made of?\u003c\/summary\u003e\n    \u003cp\u003eIt's a full-size ceramic bowl with an elongated shape. Glazed ceramic wipes clean easily and resists staining and odor far better than plastic marine toilet bowls.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are the mounting dimensions?\u003c\/summary\u003e\n    \u003cp\u003eThe footprint measures about 14-3\/4 inches wide by 21-1\/2 inches deep, so it fits most existing head compartments. Confirm your available space and plumbing locations before installing.\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\u003eDometic MasterFlush 8740 Electric Macerating Marine Toilet\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eDometic\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003ctd\u003eMasterFlush 8740\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e304874022\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e713814270704\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eMarine Toilet\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFlush System\u003c\/th\u003e\n\u003ctd\u003eElectric macerating\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProfile\u003c\/th\u003e\n\u003ctd\u003eStandard height\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSeat Height\u003c\/th\u003e\n\u003ctd\u003eApproximately 19 in\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBowl Material\u003c\/th\u003e\n\u003ctd\u003eCeramic\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBowl Shape\u003c\/th\u003e\n\u003ctd\u003eElongated\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFootprint (W x D)\u003c\/th\u003e\n\u003ctd\u003e14.75 in x 21.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWater Supply\u003c\/th\u003e\n\u003ctd\u003eFresh water\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eOperating Voltage\u003c\/th\u003e\n\u003ctd\u003e12V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMacerator\u003c\/th\u003e\n\u003ctd\u003eIntegrated electric pump with stainless steel cutting blade\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFlush Modes\u003c\/th\u003e\n\u003ctd\u003eNormal and low\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eApproximate Weight\u003c\/th\u003e\n\u003ctd\u003e42 lb\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 makes the MasterFlush 8740 a macerating toilet?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It has an electric pump with a stainless steel cutting blade built into the base. When you flush, it grinds waste and paper into a slurry and pumps it out through the discharge line, which allows smaller plumbing and longer runs than a gravity toilet.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this a standard-height or low-profile toilet?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The 8740 is the standard-height model. Its seat sits at roughly 19 inches, which is very close to a residential bathroom toilet and more comfortable for most adults than a low-profile marine unit.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it use fresh water or sea water to flush?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It flushes with fresh water from your boat's supply. Using fresh water keeps sea-water odor and marine growth out of the bowl and plumbing, so the head stays cleaner over time.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What power does it need?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The toilet runs on a standard 12-volt DC supply and connects directly to your house battery system. You don't need an inverter or a separate power source to operate it.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I install it away from the holding tank?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Because the macerator pumps waste through small-diameter plumbing, you can mount the toilet above, below, or well away from the tank and route the discharge line to wherever the tank is located.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What are the two flush modes for?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A normal flush clears the bowl completely, while a low flush uses less water to conserve your fresh-water supply and slow how quickly the holding tank fills on longer trips.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is the bowl made of?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a full-size ceramic bowl with an elongated shape. Glazed ceramic wipes clean easily and resists staining and odor far better than plastic marine toilet bowls.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What are the mounting dimensions?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The footprint measures about 14-3\/4 inches wide by 21-1\/2 inches deep, so it fits most existing head compartments. Confirm your available space and plumbing locations before installing.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Dometic","offers":[{"title":"Default Title","offer_id":44784510074973,"sku":"2006799","price":1669.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_9c51bc5c-f10f-4ad4-9b83-f278a9e78376.png?v=1784897022","url":"https:\/\/nvnmarine.com\/products\/dometic-masterflush-8740-macerating-marine-toilet","provider":"NVN Marine","version":"1.0","type":"link"}