{"product_id":"outboard-thermostat-kit-fits-mercury-marine-135-200-hp-replaces-75692q2-75692t2-75692t3-glm13340","title":"Outboard Thermostat Kit – Fits Mercury Marine 135-200 HP (Replaces 75692Q2, 75692T2, 75692T3, GLM13340)","description":"\u003csection\u003e\n\u003c!-- 🔧 Table Styles (include only once per page) --\u003e\n\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eOutboard Thermostat Kit – Fits Mercury Marine 135-200 HP (Replaces 75692Q2)\u003c\/strong\u003e is designed for Mercury Marine 135-200 HP V6 four-stroke outboard engines produced between 1984 and 1998. It covers models including the V135, V150, V175, V200, XR4, MAGNUM II, and XR6.\u003c\/p\u003e\n\u003cp\u003eIt serves as a direct interchange for Mercury Marine part numbers 75692T2, 75692Q2, and 75692T3, as well as GLM Marine GLM13340.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngineered for direct OEM replacement installation.\u003c\/li\u003e\n  \u003cli\u003eManufactured in an ISO9002 certified facility for quality assurance.\u003c\/li\u003e\n  \u003cli\u003eThe kit includes two thermostats and two matching gaskets.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Marine\u003c\/td\u003e\n        \u003ctd\u003e75692T2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Marine\u003c\/td\u003e\n        \u003ctd\u003e75692Q2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury Marine\u003c\/td\u003e\n        \u003ctd\u003e75692T3\u003c\/td\u003e\n      \u003c\/tr\u003e\n       \u003ctr\u003e\n        \u003ctd\u003eGLM Marine\u003c\/td\u003e\n        \u003ctd\u003eGLM13340\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n\u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n\u003cp\u003eFor Mercury engines, verify your serial number to ensure correct fitment: 135-150HP V-6 (A9046446 and higher), 175HP V-6 (C100861 and higher), 200HP V-6 (6435503 and higher).\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eModel\u003c\/th\u003e\n        \u003cth\u003eRated HP\u003c\/th\u003e\n        \u003cth\u003eStroke\u003c\/th\u003e\n        \u003cth\u003eYears\u003c\/th\u003e\n        \u003cth\u003eOEM Part No.\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003eV135\u003c\/td\u003e\n        \u003ctd\u003e135\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1986–1988\u003c\/td\u003e\n        \u003ctd\u003e75692Q2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003eV150\u003c\/td\u003e\n        \u003ctd\u003e150\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1986–1988\u003c\/td\u003e\n        \u003ctd\u003e75692Q2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003eXR4\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1991\u003c\/td\u003e\n        \u003ctd\u003e75692Q2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003eMAGNUM II\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1991–1998\u003c\/td\u003e\n        \u003ctd\u003e75692Q2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003eXR6\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1992–1998\u003c\/td\u003e\n        \u003ctd\u003e75692Q2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003eV175\u003c\/td\u003e\n        \u003ctd\u003e175\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1989–1990\u003c\/td\u003e\n        \u003ctd\u003e75692Q2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eMercury\u003c\/td\u003e\n        \u003ctd\u003eV200\u003c\/td\u003e\n        \u003ctd\u003e200\u003c\/td\u003e\n        \u003ctd\u003e4-Stroke\u003c\/td\u003e\n        \u003ctd\u003e1984–1988\u003c\/td\u003e\n        \u003ctd\u003e75692Q2\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n\u003cdl\u003e\n  \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eThermostat Kit\u003c\/dd\u003e\n  \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eDirect OEM Replacement\u003c\/dd\u003e\n  \u003cdt\u003eTemperature Rating\u003c\/dt\u003e\n\u003cdd\u003e143°F (62°C)\u003c\/dd\u003e\n  \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.15 lb (0.068 kg)\u003c\/dd\u003e\n  \u003cdt\u003eProduction Standard\u003c\/dt\u003e\n\u003cdd\u003eISO9002 certified factory\u003c\/dd\u003e\n  \u003cdt\u003ePackage Quantity\u003c\/dt\u003e\n\u003cdd\u003e2 thermostats with 2 gaskets\u003c\/dd\u003e\n\u003c\/dl\u003e\n\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Thermostat (75692Q2)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cspan style=\"color:#d0021b;\"\u003e2 x\u003c\/span\u003e Rubber Gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eDisconnect the battery and allow the engine to cool completely.\u003c\/li\u003e\n  \u003cli\u003eDrain the engine cooling system into an appropriate container.\u003c\/li\u003e\n  \u003cli\u003eLocate the thermostat housing on the engine block.\u003c\/li\u003e\n  \u003cli\u003eRemove the bolts securing the housing cover. Note their orientation.\u003c\/li\u003e\n  \u003cli\u003eCarefully remove the old thermostat and gasket.\u003c\/li\u003e\n  \u003cli\u003eClean the housing and cover surfaces, removing all old gasket material.\u003c\/li\u003e\n  \u003cli\u003eInstall the new thermostat, ensuring it is correctly seated.\u003c\/li\u003e\n  \u003cli\u003ePlace the new gasket onto the housing, aligning it with the bolt holes.\u003c\/li\u003e\n  \u003cli\u003eReinstall the housing cover and tighten bolts to the manufacturer's torque specifications.\u003c\/li\u003e\n  \u003cli\u003eRefill the cooling system with the recommended coolant.\u003c\/li\u003e\n  \u003cli\u003eReconnect the battery, start the engine, and check for leaks and proper operating temperature.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003eHow do I know if my thermostat has failed?\u003c\/summary\u003e\u003cp\u003eCommon signs of a failed thermostat include engine overheating, running too cold (not reaching operating temperature), erratic temperature gauge readings, and poor engine performance.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat temperature does this thermostat operate at?\u003c\/summary\u003e\u003cp\u003eThis thermostat is rated to open at 143°F (62°C) to allow coolant to circulate and maintain optimal engine temperature.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this a single or dual-thermostat kit?\u003c\/summary\u003e\u003cp\u003eThis is a complete kit containing two thermostats and two gaskets, as required for a full replacement on the specified V6 engines.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow often should I replace my outboard thermostat?\u003c\/summary\u003e\u003cp\u003eThermostats should be inspected regularly and replaced every 1-2 years as part of preventative maintenance, or immediately if you notice signs of failure. This is especially critical for engines operated in saltwater.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the difference between OEM and aftermarket parts?\u003c\/summary\u003e\u003cp\u003eThis listing is for an aftermarket replacement, not an original equipment manufacturer (OEM) part. It is built to OEM-level specifications with comparable materials and is manufactured in an ISO 9002 facility, with batch inspections for consistency.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eHow fast is shipping and what does it cost?\u003c\/summary\u003e\u003cp\u003eWe ship worldwide quickly, with a typical transit time of 5–15 days. Standard shipping is free for most orders, and expedited options will appear at checkout if they are available for your location.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat is the warranty and return policy?\u003c\/summary\u003e\u003cp\u003eOur parts are covered by a 1-year warranty against manufacturing defects under normal use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window for items that are unused and in their original condition. See our policy page or reach out for instructions.\u003c\/p\u003e\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003eVerify images and specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n    \u003cli\u003eThis is an aftermarket replacement component, not an OEM part.\u003c\/li\u003e\n    \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePro-Grade Standards\u003c\/strong\u003e — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFast Global Fulfillment\u003c\/strong\u003e — Free standard delivery to most regions, typically arriving in 5–15 days.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eManufacturer-Direct Value\u003c\/strong\u003e — Fair pricing without compromising on materials or quality control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50718269014331,"sku":"20TH005*2","price":25.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/2_Pcs_Outboard_Thermostats_for_Mercury_Marine_135-200_HP_Outboard_Motors_75692Q2_-_JLM_MARINE-8286873.jpg?v=1762958655","url":"https:\/\/seasierra.com\/products\/outboard-thermostat-kit-fits-mercury-marine-135-200-hp-replaces-75692q2-75692t2-75692t3-glm13340","provider":"SeaSierra","version":"1.0","type":"link"}