{"product_id":"marine-water-temperature-sender-240-degree-replaces-mercury-12415-faria-90401-stewart-warner-362cz-d-1-8-27-npt-10-32-stud-sierra-18-5896","title":"Sierra Temperature Sender 18-5896, Replaces Mercury Marine 12415, 1\/8\"-27 NPT, Fits Mercury Outboards","description":"\u003cp\u003eThe Sierra 18-5896 is a temperature sender built for Mercury outboard cooling systems, designed to send water\/head temperature readings to a compatible gauge. It threads directly into the cooling passage using a 1\/8\" - 27 NPT fitting and connects to the gauge circuit through a 10-32 stud terminal. This sender uses a \"D\" sender code and reads across a 240 degree Fahrenheit range, matching it to gauges calibrated for that sender type. The housing is machined for a precise thread fit and consistent sealing at the mounting point. It is a direct replacement for the original Mercury Marine 12415 sender, so it installs in the factory location without modification on the outboard models it fits. Because sender code and range must match the gauge for accurate readings, this is the correct replacement when the original Mercury 12415 sender has failed or is reading incorrectly. The compact 0.39 x 0.39 x 0.39 inch body keeps it a simple, low-profile threaded-in component rather than a bulky assembly, and its light 0.04 pound weight reflects its small, single-piece construction.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-5896\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSender Code:\u003c\/strong\u003e D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e 240 degrees Fahrenheit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Type:\u003c\/strong\u003e 10-32 stud\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size:\u003c\/strong\u003e 1\/8\" - 27 NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.04 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999563873\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces:\u003c\/strong\u003e 12415\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury 6, 8, 9.9 HP (2 cylinder) outboards, serial number A197112 and later\u003c\/li\u003e\n\u003cli\u003eMercury Sea Pro 10 HP outboards, serial number D038000 and later\u003c\/li\u003e\n\u003cli\u003eMercury 15 HP (2 cylinder) outboards, serial number B292414 and later\u003c\/li\u003e\n\u003cli\u003eMercury 18XD, 20XD, 25XD outboards, serial number B114231 and later\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e12415\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-5896 temperature sender do?\u003c\/strong\u003e It measures water or head temperature in a Mercury outboard's cooling system and sends that reading to a compatible temperature gauge, using a sender code D and a 240 degree Fahrenheit range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-5896 a direct replacement for the Mercury 12415 sender?\u003c\/strong\u003e Yes, the 18-5896 replaces Mercury Marine part number 12415 and installs in the same factory location without modification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat thread size does the 18-5896 sender use?\u003c\/strong\u003e It has a 1\/8\" - 27 NPT thread, which screws directly into the outboard's cooling passage.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat terminal connection does this sender use?\u003c\/strong\u003e The Sierra 18-5896 connects to the gauge wiring through a 10-32 stud terminal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich Mercury outboards fit the 18-5896 temperature sender?\u003c\/strong\u003e It fits Mercury 6, 8, and 9.9 HP (2 cylinder) outboards from serial number A197112 and later, Mercury Sea Pro 10 HP from serial number D038000 and later, Mercury 15 HP (2 cylinder) from serial number B292414 and later, and Mercury 18XD, 20XD, and 25XD models from serial number B114231 and later.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my outboard's serial number qualifies for this sender?\u003c\/strong\u003e Check your outboard's serial number tag against the ranges listed for the 18-5896: for example, 15 HP (2 cylinder) models need serial number B292414 or later to be compatible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size is the Sierra 18-5896 sender?\u003c\/strong\u003e It measures 0.39 x 0.39 x 0.39 inches and weighs 0.04 pounds, a small threaded-in component.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat sender code and temperature range does the 18-5896 use?\u003c\/strong\u003e This sender uses sender code D with a 240 degree Fahrenheit range, so it should be paired with a gauge calibrated for that same code and range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-5896 sender made by Sierra genuine, not a generic part?\u003c\/strong\u003e Yes, this is a genuine Sierra part, number 18-5896, manufactured as a direct-fit replacement for the Mercury 12415 sender.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the housing finish on the Sierra 18-5896?\u003c\/strong\u003e The 18-5896 has a machined housing for a precise thread fit at the 1\/8\" - 27 NPT mounting point.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-5896 fix an inaccurate temperature gauge reading?\u003c\/strong\u003e If the original Mercury 12415 sender has failed or is sending an incorrect signal, replacing it with the Sierra 18-5896 restores accurate readings to a gauge matched to sender code D and a 240 degree range.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988341371099,"sku":"SIE-18-5896","price":26.96,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-5896_lg__27507.1558127843.500.750.jpg?v=1785188484","url":"https:\/\/www.goodvibesmarina.com\/products\/marine-water-temperature-sender-240-degree-replaces-mercury-12415-faria-90401-stewart-warner-362cz-d-1-8-27-npt-10-32-stud-sierra-18-5896","provider":"Good Vibes Marina","version":"1.0","type":"link"}