{"product_id":"mercury-sensor-806490t","title":"Mercury Sensor 806490T","description":"Mercury – Quicksilver Engine Water Temperature Gauge Sender | For MerCruiser Sterndrive \u0026amp; Inboard Engines | 806490T  \n \n  Overview  \n Your temperature gauge is only as reliable as the sender feeding it data. The  Mercury 806490T Quicksilver Water Temperature Sender  is built to keep you in the know — accurately reporting your engine’s water temperature so you can spot problems before they get expensive. Designed specifically for  MerCruiser sterndrive and inboard engines , this OEM sensor gives steady, true readings even after years of heat, vibration, and salt exposure. It’s simple to install, built to last, and trusted by boaters who care about their engines as much as their time on the water. \n \n  Key Features  \n \n \n Purpose:  Monitors engine cooling temperature and relays it to your dash gauge. \n \n Build Quality:  Constructed from  marine-grade materials  that resist corrosion and wear. \n \n Performance:  Calibrated for precise, consistent readings in demanding marine environments. \n \n Ease of Use:  Installs quickly using basic hand tools — no rewiring or modifications needed. \n \n Compatibility:  Designed to work perfectly with  Mercury and Quicksilver gauge systems . \n \n \n  Engine \u0026amp; Boat Compatibility  \n \n  MerCruiser sterndrive engines  \n  MerCruiser inboard engines  \n \n \n  Performance \u0026amp; Real-World Benefits  \n The  806490T sender  does the quiet work that protects your engine. When it’s functioning properly, you’ll always know your motor’s true running temperature, helping you catch issues like clogged intakes or a weak impeller before they cause overheating. \n Because it’s marine-rated, this sender holds up to the conditions your boat lives in — salt spray, constant heat cycles, and vibration. Once installed, it feeds your gauge smooth, accurate readings you can trust every time you glance at the dash. It’s the kind of small part that delivers peace of mind every time you push the throttle forward. \n \n  Why Choose Mercury OEM  \n The  Quicksilver 806490T  is built by the same people who designed your engine, and that matters. While aftermarket sensors may fit, they often send erratic readings or fail after one season. Mercury’s OEM sender is tested for precision and corrosion resistance under real boating conditions, so you know you’re getting the same quality and reliability found in new engines from the factory. \n With Mercury OEM, you’re not just buying a part — you’re protecting your investment and ensuring your gauges tell the truth. \n \n  FAQ  \n  Q1: What engines is it made for?  It fits  MerCruiser sterndrive and inboard engines . \n  Q2: Why replace the sender?  If your temperature gauge reads inconsistently or not at all, this sender restores proper communication. \n  Q3: How hard is installation?  It’s a simple,  bolt-in replacement  using basic tools. \n  Q4: Will it work with my existing gauge?  Yes — it’s designed for  Mercury and Quicksilver instruments . \n  Q5: Why stick with OEM?  Because  Mercury OEM sensors  deliver factory-calibrated accuracy and marine-proven durability that aftermarket parts can’t match.\n\u003cp\u003e\u003cstrong\u003eVervangt artikelnummers:\u003c\/strong\u003e 806490 · 97257A 1 · 97257A1. Bestel je op een oud nummer? Dan is dit het juiste huidige onderdeel.\u003c\/p\u003e\n","brand":"Mercury","offers":[{"title":"Default Title","offer_id":54718211162453,"sku":"MERC806490T","price":20.74,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1002\/0035\/0037\/files\/806490t_main.jpg?v=1787347733","url":"https:\/\/bouwmeesterwatersport.nl\/products\/mercury-sensor-806490t","provider":"Bouwmeester Watersport","version":"1.0","type":"link"}