{"product_id":"sierra-marine-amega-3-tachometer-0-7000-rpm-58255p","title":"Sierra Marine Amega 3\" Tachometer 0-7000 RPM | 58255P","description":"\u003cp class=\"nvn-hero\"\u003eThe Sierra Marine Amega Series tachometer is a clean 3-inch full sweep electric analog gauge that reads 0 to 7000 RPM at a glance. Black face, black bezel, white pointer needle, with thru-dial and perimeter lighting for night running. A simple, honest tach built for marine engines.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe Sierra Marine Amega Series tachometer is a clean, no-nonsense 3-inch analog gauge that puts engine RPM right where you can read it at a glance. It's a full sweep electric unit, so it reads off your engine's electrical signal and the needle travels across the whole dial face from 0 to 7000 RPM. Black face, black bezel, white pointer needle. It's built for marine use, and it's the kind of gauge that just works once it's wired in.\u003c\/p\u003e\n\u003cp\u003eFull sweep matters more than it sounds. Instead of a short arc, the needle covers the entire face, so you get more space between each RPM mark and a reading you can trust from the helm without squinting. The electric movement picks up its signal from the ignition coil or the alternator output, depending on your engine. That's worth knowing before you wire it, because the signal source and the pulse count have to match what the gauge expects. Get that right and it tracks smooth and steady.\u003c\/p\u003e\n\u003cp\u003eThe 0 to 7000 RPM range suits most gas outboards, sterndrives, and inboard gas engines running in that band. If you're replacing a cracked or fogged tach on an older boat, or building out a fresh gauge cluster, this one drops into the standard 3-inch cutout most marine dashes already use. And because it's an Amega Series gauge, the black-face styling matches other Sierra 3-inch gauges if you want a consistent look across your volt, fuel, and trim gauges. Anglers, cruisers, and weekend runabout owners all end up needing a reliable tach at some point, and this is a sensible choice.\u003c\/p\u003e\n\u003cp\u003eInstallation is straightforward if you've wired a gauge before. It fits the standard 3-inch (roughly 3-3\/8 inch) hole. Before you commit, check the depth behind your console. Some older boats have wiring or structure close behind the dash that can crowd the gauge body and its terminals, so a quick measurement saves you grief. You'll land the signal wire, a 12-volt feed, a ground, and the lighting wire. Many of these gauges have a selector for cylinder or pulse count, so set it to match your engine at install or a twin-engine rig can read double.\u003c\/p\u003e\n\u003cp\u003eThe dial uses thru-dial and perimeter lighting, so the face glows evenly for night running. That's a real plus when you're idling back into a harbor after dark and want to keep an eye on RPM without a flashlight. The white pointer needle stands out against the black face in daylight. At night, strong dial lighting is what makes it easy to read, so wire the lighting to a switched, dimmable circuit if you can.\u003c\/p\u003e\n\u003cp\u003eOne thing we'll be straight about: this version comes without peak memory and without a warning indicator. It won't log your highest RPM or flash an alarm. It's a straight-reading tach, and honestly that's all a lot of boaters want. If you track maintenance by hours, pair it with a separate hour meter and you've got the basics covered. Simple gauges like this tend to outlast the fancy ones because there's less to fail.\u003c\/p\u003e\n\u003cp\u003eOut on the water, the enemy is always moisture. On open boats especially, the rear terminals can pick up spray and condensation over a few seasons. A little dielectric grease on the connections at install goes a long way toward keeping the readings clean and the gauge alive. Keep it out of standing water, give the back of the gauge some airflow where you can, and don't over-torque the mounting clamp against the panel. Do that, match the signal, and this Sierra Marine tach will give you years of honest service.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e3-inch diameter analog dial that drops into the standard marine gauge cutout\u003c\/li\u003e\n  \u003cli\u003eFull sweep electric movement, needle covers the entire face for easier reading\u003c\/li\u003e\n  \u003cli\u003e0 to 7000 RPM range covers most gas outboards, sterndrives, and inboard gas engines\u003c\/li\u003e\n  \u003cli\u003eElectric signal pickup from the ignition coil or alternator output\u003c\/li\u003e\n  \u003cli\u003eBlack face, black bezel, white pointer needle in the Amega Series styling\u003c\/li\u003e\n  \u003cli\u003eThru-dial and perimeter lighting for even, glare-free night reading\u003c\/li\u003e\n  \u003cli\u003eStraight-reading design without peak memory or warning indicator, less to fail\u003c\/li\u003e\n  \u003cli\u003eBuilt for the marine environment and matched to other Sierra 3-inch gauges\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 engines does the 0-7000 RPM range suit?\u003c\/summary\u003e\n    \u003cp\u003eIt covers most gas outboards, sterndrives, and inboard gas engines that run in that band. If your engine turns higher than 7000 RPM at wide-open throttle, choose a higher-range gauge instead.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow does a full sweep electric tach get its signal?\u003c\/summary\u003e\n    \u003cp\u003eIt reads off your engine's electrical signal, typically the ignition coil or the alternator output. The signal source and pulse count need to match what the gauge expects, so check your engine's wiring before you connect it.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need to set anything at install?\u003c\/summary\u003e\n    \u003cp\u003eMany full sweep electric tachs have a selector for cylinder or pulse count. Set it to match your engine at install. If it's set wrong, a reading can come out double, which is common on twin-engine rigs.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat size hole does it need?\u003c\/summary\u003e\n    \u003cp\u003eIt fits the standard 3-inch marine gauge cutout, which is roughly 3-3\/8 inch. Check the depth behind your console too, since some older dashes crowd the gauge body and rear terminals.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it have peak memory or a warning alarm?\u003c\/summary\u003e\n    \u003cp\u003eNo. This version is a straight-reading tach without peak memory and without a warning indicator. It won't log your highest RPM or flash an alarm. It just shows current engine speed.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs it lit for night running?\u003c\/summary\u003e\n    \u003cp\u003eYes. It uses thru-dial and perimeter lighting so the face glows evenly after dark. Wiring the lighting to a switched, dimmable circuit gives you the best night visibility.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill it match my other gauges?\u003c\/summary\u003e\n    \u003cp\u003eIt's an Amega Series gauge with a black face, black bezel, and white pointer needle, so it lines up with other Sierra 3-inch gauges if you want a consistent cluster of volt, fuel, and trim gauges.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I keep the connections reliable on an open boat?\u003c\/summary\u003e\n    \u003cp\u003eMoisture is the main enemy. Put a little dielectric grease on the rear terminals at install, keep the gauge out of standing water, and give the back some airflow where you can. That keeps readings clean over the seasons.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it run on 12 volts?\u003c\/summary\u003e\n    \u003cp\u003eYes, it's a 12-volt marine gauge. You'll wire a signal lead, a 12-volt feed, a ground, and the lighting lead.\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 Marine Amega 3 Inch Full Sweep Electric Tachometer 0-7000 RPM\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\u003e58255P\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e731957419538\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003ctd\u003eAmega\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eGauge Type\u003c\/th\u003e\n\u003ctd\u003eTachometer\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003ctd\u003e3 Inch\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSweep\u003c\/th\u003e\n\u003ctd\u003eFull Sweep\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDrive Type\u003c\/th\u003e\n\u003ctd\u003eElectric\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDisplay\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eRPM Range\u003c\/th\u003e\n\u003ctd\u003e0-7000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePeak Memory\u003c\/th\u003e\n\u003ctd\u003eWithout Peak Memory and Warning Indicator\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFace Color\u003c\/th\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBezel Color\u003c\/th\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePointer Needle Color\u003c\/th\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eLighting\u003c\/th\u003e\n\u003ctd\u003eThru-Dial and Perimeter Lighting\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eMarine\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 engines does the 0-7000 RPM range suit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It covers most gas outboards, sterndrives, and inboard gas engines that run in that band. If your engine turns higher than 7000 RPM at wide-open throttle, choose a higher-range gauge instead.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How does a full sweep electric tach get its signal?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It reads off your engine's electrical signal, typically the ignition coil or the alternator output. The signal source and pulse count need to match what the gauge expects, so check your engine's wiring before you connect it.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do I need to set anything at install?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Many full sweep electric tachs have a selector for cylinder or pulse count. Set it to match your engine at install. If it's set wrong, a reading can come out double, which is common on twin-engine rigs.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What size hole does it need?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It fits the standard 3-inch marine gauge cutout, which is roughly 3-3\/8 inch. Check the depth behind your console too, since some older dashes crowd the gauge body and rear terminals.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it have peak memory or a warning alarm?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. This version is a straight-reading tach without peak memory and without a warning indicator. It won't log your highest RPM or flash an alarm. It just shows current engine speed.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is it lit for night running?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. It uses thru-dial and perimeter lighting so the face glows evenly after dark. Wiring the lighting to a switched, dimmable circuit gives you the best night visibility.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will it match my other gauges?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's an Amega Series gauge with a black face, black bezel, and white pointer needle, so it lines up with other Sierra 3-inch gauges if you want a consistent cluster of volt, fuel, and trim gauges.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How do I keep the connections reliable on an open boat?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Moisture is the main enemy. Put a little dielectric grease on the rear terminals at install, keep the gauge out of standing water, and give the back some airflow where you can. That keeps readings clean over the seasons.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it run on 12 volts?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes, it's a 12-volt marine gauge. You'll wire a signal lead, a 12-volt feed, a ground, and the lighting lead.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Sierra Marine","offers":[{"title":"Default Title","offer_id":45061985927261,"sku":"2008639","price":87.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_d36fbe1e-3f13-4495-bdae-d8d848006ee5.jpg?v=1789569353","url":"https:\/\/nvnmarine.com\/products\/sierra-marine-amega-3-tachometer-0-7000-rpm-58255p","provider":"NVN Marine","version":"1.0","type":"link"}