{"product_id":"fasworx-outboard-thermostat-housing-kit-for-mercury-mariner-40-60hp-2-stroke-850055a2","title":"FASWORX Outboard Thermostat \u0026 Housing Kit for Mercury Mariner 40-60hp 2-Stroke (850055A2)","description":"\u003ch2\u003eOverview for Mercury Mariner 40-60hp 2-Stroke engines\u003c\/h2\u003e\n\u003cp\u003eMeet the FASWORX outboard thermostat and housing kit, designed to fit Mercury Mariner 40-60hp 3-cylinder 2-stroke motors. This kit features a 110-degree thermostat, and is designed to replace 850055A2 and is compatible with 850055A1 and 59078A2. It targets key serial ranges for USA and BEL builds, offering a seamless upgrade path for older parts while keeping the engine's cooling system intact.\u003c\/p\u003e\n\u003ch3\u003eKey compatibility at a glance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible with 850055A2, 850055A1, 59078A2\u003c\/li\u003e\n  \u003cli\u003eFits 40hp 3-Cylinder 2-Stroke (USA 0G531301+ \/ BEL 9855139+)\u003c\/li\u003e\n  \u003cli\u003eFits 50hp 3-Cylinder 2-Stroke (USA 0G590000+ \/ BEL 9973100+)\u003c\/li\u003e\n  \u003cli\u003eFits 55hp 3-Cylinder 2-Stroke (USA 0G590000+ \/ BEL 9973100+)\u003c\/li\u003e\n  \u003cli\u003eFits 60hp 3-Cylinder 2-Stroke (USA 0G590000+ \/ BEL 9973100+)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat this kit offers\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e110-degree thermostat helps maintain steady cooling under load\u003c\/li\u003e\n  \u003cli\u003eQuality housing and components designed for marine environments\u003c\/li\u003e\n  \u003cli\u003eClear compatibility with multiple part numbers for easier upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat you get and installation tips\u003c\/h3\u003e\n\u003cp\u003eThe kit includes the thermostat element, housing pieces and fittings needed for a straightforward swap. Before installing, verify your engine serial range matches supported numbers and prepare basic tools. If any doubt arises, consult your service manual or a marine technician.\u003c\/p\u003e\n\u003ch3\u003eWhy choose FASWORX\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eReputable brand focused on dependable marine parts\u003c\/li\u003e\n  \u003cli\u003eParts designed for simple fitment and reliable operation\u003c\/li\u003e\n  \u003cli\u003ePotential to help sustain proper engine cooling during demanding use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eReal-world use cases\u003c\/h3\u003e\n\u003cp\u003eOn family boats cruising at steady speeds, or during occasional high-load tasks like towing or hill climbs at speed, this kit could help maintain consistent temperature levels when paired with compatible engines.\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: What engines is this kit compatible with?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Fits Mercury Mariner 40-60hp 3-cylinder 2-stroke models; compatible with 850055A2, 850055A1, and 59078A2 within listed serial ranges.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is included and how might it help?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Includes a 110-degree thermostat and housing components; may help maintain steady cooling under load for compatible engines.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"FASWORX","offers":[{"title":"Default Title","offer_id":42474554163285,"sku":"B0BHX7L6RL","price":59.12,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/fasworx-outboard-thermostat-housing-kit-closeup.jpg?v=1778250203","url":"https:\/\/plentytorque.co.uk\/products\/fasworx-outboard-thermostat-housing-kit-for-mercury-mariner-40-60hp-2-stroke-850055a2","provider":"PlentyTorque","version":"1.0","type":"link"}