{"product_id":"furuno-if-nmea2k2-8l-nmea2k-0183-converter-for-csh8lmk2","title":"Furuno IF-NMEA2K2-8L Bi-Directional Converter for CSH8LMK2 Sonar","description":"\u003cp class=\"nvn-hero\"\u003eThe Furuno IF-NMEA2K2-8L is the premade converter that ties a CSH8LMK2 scanning sonar into your TZtouch2 or TZtouch3 network. Bi-directional nav data, event marks passed both ways, and the CSH8LMK2 NMEA0183 connector already attached. Plug it in and your sonar and plotter finally talk.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eIf you run a Furuno CSH8LMK2 scanning sonar and a TZtouch2 or TZtouch3 helm, this is the piece that makes them work as one system. The IF-NMEA2K2-8L is a premade, bi-directional converter that moves navigational data between your NMEA 2000 TZtouch network and the CSH8LMK2's NMEA 0183 data port. No adapter boards. No custom pinouts to chase down. The CSH8LMK2 NMEA0183 connector is already attached, so you're plugging into known ports instead of building your own harness.\u003c\/p\u003e\n\u003cp\u003eHere's the problem it solves. Furuno's glass-bridge MFDs live on a NMEA 2000 backbone, and the CSH8LMK2 talks NMEA 0183 on its data port. Those are two different data languages. Without a translator sitting between them, your plotter and your sonar are basically strangers. This converter is that translator. It takes the position, heading, and course data flowing on the TZtouch network and hands it to the sonar, then carries data back the other way. Both directions, live at the same time.\u003c\/p\u003e\n\u003cp\u003eWhy does bi-directional matter? Because both boxes get smarter when they share. The sonar gets accurate heading and position from the TZtouch network, which keeps its 360 degree picture correctly oriented as the boat swings and drifts. And the plotter gets the marks and targets you generate on the sonar, so your chart reflects what the sonar is actually seeing under and around the hull. One-way data would give you half of that. This converter gives you both halves.\u003c\/p\u003e\n\u003cp\u003eThe CSH8LMK2 is Furuno's full-circle scanning sonar, the kind of omni sonar that paints a complete 360 degree picture of the water around the boat instead of just what's under the transducer. It's commercial-grade fish-finding, and it earns its keep on boats that live and die by finding schools first. But a sonar that capable deserves to talk to your chart. Out of the box, the two run on different standards, and that gap is exactly what this converter closes.\u003c\/p\u003e\n\u003cp\u003eThe real payoff is event marks. When you're watching a bait ball or a fish school light up on the CSH8LMK2's picture and you drop a mark, that mark carries over to your TZtouch plotter too. So the spot you found on sonar becomes a waypoint you can run back to, share across every display at the helm, and work again tomorrow morning. For commercial crews and serious sportfishermen chasing tuna or hunting bait, that hand-off from sonar to chart is the whole reason to wire the two together in the first place.\u003c\/p\u003e\n\u003cp\u003eThis is a specialized part, not a general-purpose gateway. It's built for one job, bridging a CSH8LMK2 to a TZtouch2 or TZtouch3 network, and it does that job cleanly. Because it ships premade with the sonar connector already terminated, most of the guesswork is gone before you start. We'd still tell you to plan the cable run, give it proper strain relief, and confirm your TZtouch software is current before you commission the system. A few minutes of prep up front saves you a headache later.\u003c\/p\u003e\n\u003cp\u003eOne note before you buy: this converter is model-specific. The 8L in the part number and the attached NMEA0183 connector are matched to the CSH8LMK2. If you're running a different Furuno sonar or a different display family, this isn't the right interface for that setup, and we're happy to help you find the one that is. But for a CSH8LMK2 feeding a TZtouch2 or TZtouch3 helm, the IF-NMEA2K2-8L is the part Furuno built for exactly this connection.\u003c\/p\u003e\n\u003cp\u003eIt's not a glamorous box. It's the quiet piece of the network that lets a top-tier scanning sonar and a top-tier plotter act like they were built to run together. Which, being Furuno, they were. If you've already invested in the CSH8LMK2 and a TZtouch helm, don't leave them talking past each other. This is the part that finishes the job.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003ePremade bi-directional converter, no custom cables or crimping required\u003c\/li\u003e\n  \u003cli\u003eBridges NMEA 2000 TZtouch2 and TZtouch3 networks to the CSH8LMK2's NMEA 0183 data port\u003c\/li\u003e\n  \u003cli\u003ePasses event marks both ways, so sonar targets become plotter waypoints\u003c\/li\u003e\n  \u003cli\u003eCSH8LMK2 NMEA0183 data port connector attached out of the box\u003c\/li\u003e\n  \u003cli\u003eShares position, heading, and course data across the sonar and helm\u003c\/li\u003e\n  \u003cli\u003ePurpose-built for Furuno CSH8LMK2 full-circle scanning sonar integration\u003c\/li\u003e\n  \u003cli\u003ePlug-and-play construction keeps the install clean on a busy helm\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 Furuno 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 does the Furuno IF-NMEA2K2-8L do?\u003c\/summary\u003e\n    \u003cp\u003eIt's a premade bi-directional converter that connects a Furuno CSH8LMK2 scanning sonar to a TZtouch2 or TZtouch3 network. It translates data between the sonar's NMEA 0183 data port and the NMEA 2000 TZtouch backbone so the two share navigational data.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhich Furuno displays is it made for?\u003c\/summary\u003e\n    \u003cp\u003eIt's built for TZtouch2 and TZtouch3 networks. It bridges those glass-bridge helms to the CSH8LMK2 sonar.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat sonar does it connect to?\u003c\/summary\u003e\n    \u003cp\u003eThe Furuno CSH8LMK2 full-circle scanning sonar. The attached connector is matched to that model's NMEA0183 data port.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it pass event marks?\u003c\/summary\u003e\n    \u003cp\u003eYes, that's a key feature. Drop a mark on a fish school on the CSH8LMK2 and it carries over to your TZtouch plotter as a waypoint, and marks move the other direction too.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs it really bi-directional?\u003c\/summary\u003e\n    \u003cp\u003eYes. Position, heading, and course data flow from the TZtouch network to the sonar, and the sonar's data flows back to the plotter, both at the same time.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need to build or crimp any cables?\u003c\/summary\u003e\n    \u003cp\u003eNo. It ships premade with the CSH8LMK2 NMEA0183 data port connector already attached. You plug into known ports instead of making your own harness.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhy do I need a converter at all?\u003c\/summary\u003e\n    \u003cp\u003eThe TZtouch MFDs run on NMEA 2000 and the CSH8LMK2 talks NMEA 0183 on its data port. Those are different data standards, so a converter has to translate between them for the two to communicate.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill this work with a different Furuno sonar or display?\u003c\/summary\u003e\n    \u003cp\u003eIt's model-specific to the CSH8LMK2 feeding a TZtouch2 or TZtouch3 network. For a different sonar or display family, you'd want the matching Furuno interface instead. Reach out and we'll help you find it.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs the NMEA0183 connector included?\u003c\/summary\u003e\n    \u003cp\u003eYes. The CSH8LMK2 NMEA0183 data port connector comes attached to the converter out of the box.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat's the warranty?\u003c\/summary\u003e\n    \u003cp\u003eIt carries the full Furuno manufacturer warranty. We're an authorized Furuno reseller, so any warranty claim runs through us back to Furuno.\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\u003eFuruno IF-NMEA2K2-8L Bi-Directional Converter for CSH8LMK2 Sonar\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eFuruno\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003eIF-NMEA2K2-8L\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e611679394415\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003eFNMEA2K28L\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConverter Type\u003c\/th\u003e\n\u003ctd\u003eNMEA 2000 to NMEA 0183 Bi-Directional\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eData Direction\u003c\/th\u003e\n\u003ctd\u003eBi-Directional\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCompatible Sonar\u003c\/th\u003e\n\u003ctd\u003eFuruno CSH8LMK2\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCompatible Networks\u003c\/th\u003e\n\u003ctd\u003eTZtouch2, TZtouch3\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eEvent Marks\u003c\/th\u003e\n\u003ctd\u003eSupported (passed between sonar and plotter)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eIncluded Connector\u003c\/th\u003e\n\u003ctd\u003eCSH8LMK2 NMEA0183 Data Port Connector (attached)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003ePremade \/ Plug-and-Play\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 does the Furuno IF-NMEA2K2-8L do?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's a premade bi-directional converter that connects a Furuno CSH8LMK2 scanning sonar to a TZtouch2 or TZtouch3 network. It translates data between the sonar's NMEA 0183 data port and the NMEA 2000 TZtouch backbone so the two share navigational data.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Which Furuno displays is it made for?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's built for TZtouch2 and TZtouch3 networks. It bridges those glass-bridge helms to the CSH8LMK2 sonar.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What sonar does it connect to?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The Furuno CSH8LMK2 full-circle scanning sonar. The attached connector is matched to that model's NMEA0183 data port.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it pass event marks?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes, that's a key feature. Drop a mark on a fish school on the CSH8LMK2 and it carries over to your TZtouch plotter as a waypoint, and marks move the other direction too.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is it really bi-directional?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Position, heading, and course data flow from the TZtouch network to the sonar, and the sonar's data flows back to the plotter, both at the same time.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do I need to build or crimp any cables?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. It ships premade with the CSH8LMK2 NMEA0183 data port connector already attached. You plug into known ports instead of making your own harness.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Why do I need a converter at all?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The TZtouch MFDs run on NMEA 2000 and the CSH8LMK2 talks NMEA 0183 on its data port. Those are different data standards, so a converter has to translate between them for the two to communicate.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will this work with a different Furuno sonar or display?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's model-specific to the CSH8LMK2 feeding a TZtouch2 or TZtouch3 network. For a different sonar or display family, you'd want the matching Furuno interface instead. Reach out and we'll help you find it.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is the NMEA0183 connector included?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. 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