{"product_id":"quicksilver-water-temperature-sender-for-mercruiser-sterndrives-and-inboards-806490t-oem-fit-corrosion-resistant","title":"Quicksilver Water Temperature Sender for MerCruiser Sterndrives and Inboards 806490T – OEM-fit, Corrosion-Resistant","description":"\u003cp\u003e\u003cstrong\u003eQuicksilver 806490T is a direct-fit water temperature sender designed for MerCruiser sterndrive and inboard engines to provide accurate engine coolant temperature readings.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 806490T sender unit is an OEM-spec replacement part from Quicksilver, engineered to match Mercury Marine standards and restore reliable temperature monitoring on compatible MerCruiser sterndrives and inboard engines. Built to withstand marine environments, this sender helps maintain accurate gauge feedback so you can spot overheating signs early and protect engine performance. Installation requires common shop tools and follows the guidance in your owner's or service manual for application-specific locations and replacement steps.\u003c\/p\u003e\n\n\u003ch3\u003eWhich engines and models is this sender compatible with?\u003c\/h3\u003e\n\u003cp\u003eThe 806490T is manufactured for use with a range of MerCruiser sterndrive and inboard applications. Compatibility depends on engine year and configuration, so always confirm fitment with your owner's manual or a Mercury parts guide before purchase.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned to meet Mercury Marine original equipment specifications.\u003c\/li\u003e\n  \u003cli\u003eCommonly used across MerCruiser sterndrive and many inboard engines.\u003c\/li\u003e\n  \u003cli\u003eFits models that accept the 806490T part number as OEM replacement.\u003c\/li\u003e\n  \u003cli\u003eVerify engine serial and manual for exact application details.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is the 806490T to install?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for technicians and experienced DIYers when following the engine’s service instructions. You’ll typically remove the old sender, thread in the new unit, and reconnect the wiring; no specialized tools are usually required.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eRequires basic hand tools commonly found in marine tool kits.\u003c\/li\u003e\n  \u003cli\u003eThreaded mounting for a direct, sealed fit when tightened correctly.\u003c\/li\u003e\n  \u003cli\u003eElectrical connector designed to mate with factory harnesses for simple reattachment.\u003c\/li\u003e\n  \u003cli\u003eRefer to the service manual for torque values and location-specific steps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance and durability features does this sender offer?\u003c\/h3\u003e\n\u003cp\u003eQuicksilver builds the 806490T to Mercury Marine standards, focusing on measurement accuracy and resistance to saltwater and vibration. The unit’s materials and design help maintain reliable readings throughout typical marine operating conditions.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eManufactured to meet Mercury Marine OEM specifications for consistent performance.\u003c\/li\u003e\n  \u003cli\u003eMaterials selected for corrosion resistance in marine environments.\u003c\/li\u003e\n  \u003cli\u003eEngineered for stable readings under vibration and temperature cycling.\u003c\/li\u003e\n  \u003cli\u003eBacked by Quicksilver’s decades-long reputation in marine parts and accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat should I check before buying or replacing my sender?\u003c\/h3\u003e\n\u003cp\u003eConfirm the part number compatibility and inspect wiring and gauge condition before replacement. In many cases, symptoms attributed to the sender—such as fluctuating or no gauge reading—can also stem from harness issues or a faulty gauge, so troubleshooting both ends is advised.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMatch the 806490T number with your parts diagram or owner's manual.\u003c\/li\u003e\n  \u003cli\u003eInspect wiring connectors for corrosion, breaks, or loose pins.\u003c\/li\u003e\n  \u003cli\u003eTest the gauge or instrument cluster if available to isolate faults.\u003c\/li\u003e\n  \u003cli\u003eKeep installation torque and sealing practices consistent with manual instructions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The Quicksilver 806490T water temperature sender is intended for boat owners, marine mechanics, and service shops working on MerCruiser sterndrives and inboard engines that require a factory-spec replacement part. It’s a practical choice for anyone needing a reliable, OEM-quality sender that integrates with Mercury Marine instrumentation to help maintain accurate engine temperature monitoring and protect engine health during regular boating use.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is the 806490T a direct replacement for factory MerCruiser senders?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the 806490T is produced to meet Mercury Marine OEM specifications and fits many MerCruiser sterndrive and inboard applications when matched by part number.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need special tools to install this sender?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No special tools are usually required; common hand tools suffice, but follow the service manual for torque and sealing details.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Quicksilver","offers":[{"title":"Default Title","offer_id":48083127664798,"sku":"B003905OHM","price":64.25,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/quicksilver-806490t-front-view.jpg?v=1785825788","url":"https:\/\/northtrailauto.ca\/products\/quicksilver-water-temperature-sender-for-mercruiser-sterndrives-and-inboards-806490t-oem-fit-corrosion-resistant","provider":"North Trail Auto","version":"1.0","type":"link"}