{"product_id":"0435491-thermostat-ay","title":"0435491 Evinrude Johnson Thermostat AY | Genuine OEM BRP Outboard Part","description":"\u003cp\u003e\n 🔧 Product Description\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Genuine BRP Evinrude Johnson 143°F Thermostat Assembly - Part Number: 0435491\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n A genuine BRP cooling-system thermostat for selected 90HP, 115HP, 150HP and 175HP Evinrude and Johnson two-stroke outboards.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n The thermostat begins opening at approximately 143°F or 62°C, regulating cooling-water circulation through the cylinder block and cylinder heads. Correct temperature control helps the engine warm up evenly while preventing excessive operating temperature under load.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n ⚙️ Key Features\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine BRP Evinrude Johnson OEM thermostat\n\u003c\/p\u003e\n\u003cp\u003e\n • Correct OEM part number 0435491\n\u003c\/p\u003e\n\u003cp\u003e\n • Common unprefixed number 435491\n\u003c\/p\u003e\n\u003cp\u003e\n • Approximately 143°F \/ 62°C opening temperature\n\u003c\/p\u003e\n\u003cp\u003e\n • Used on selected 60-degree V4 and V6 engines\n\u003c\/p\u003e\n\u003cp\u003e\n • Wax-pellet thermostat construction\n\u003c\/p\u003e\n\u003cp\u003e\n • Sierra and Mallory replacements available\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n OEM \/ Related Numbers:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 0435491\n\u003c\/p\u003e\n\u003cp\u003e\n • 435491\n\u003c\/p\u003e\n\u003cp\u003e\n • Mercury \/ Quicksilver: 8M6010305\n\u003c\/p\u003e\n\u003cp\u003e\n • OEM Description: Thermostat Assembly\n\u003c\/p\u003e\n\u003cp\u003e\n • Temperature Rating: Approximately 143°F \/ 62°C\n\u003c\/p\u003e\n\u003cp\u003e\n • Thermostat diaphragm and pressure-control components vary by engine model\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Aftermarket \/ Verified Equivalents:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Sierra: 18-3544\n\u003c\/p\u003e\n\u003cp\u003e\n • Mallory: 9-43032\n\u003c\/p\u003e\n\u003cp\u003e\n • Aftermarket 143°F thermostat replacing 0435491\n\u003c\/p\u003e\n\u003cp\u003e\n • Generic replacement cross-referenced to 435491 and 8M6010305\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🚤 Compatibility\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Typically suits selected:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • 90HP: approximately 1995-2006\n\u003c\/p\u003e\n\u003cp\u003e\n • 115HP: approximately 1995-2006\n\u003c\/p\u003e\n\u003cp\u003e\n • 150HP: approximately 1993-2006\n\u003c\/p\u003e\n\u003cp\u003e\n • 175HP: approximately 1993-2006\n\u003c\/p\u003e\n\u003cp\u003e\n • 60-degree V4 and V6 two-stroke engine families\n\u003c\/p\u003e\n\u003cp\u003e\n • Carburetted, FICHT and applicable direct-injection engines whose diagrams specify 0435491\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Important fitment note:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Some engines require one thermostat per cylinder bank.\n\u003c\/p\u003e\n\u003cp\u003e\n • Confirm the quantity required by the cylinder-and-crankcase diagram.\n\u003c\/p\u003e\n\u003cp\u003e\n • Do not substitute thermostat 0436195 solely because it has a similar temperature rating.\n\u003c\/p\u003e\n\u003cp\u003e\n • Grommets, seals, covers, springs and diaphragms are separate unless specifically included.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 🔌 Function\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n The thermostat restricts water flow during warm-up and opens progressively as the engine reaches operating temperature.\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Common signs of thermostat failure:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine overheats at idle or under load\n\u003c\/p\u003e\n\u003cp\u003e\n • One cylinder bank runs hotter than the other\n\u003c\/p\u003e\n\u003cp\u003e\n • Engine remains excessively cold\n\u003c\/p\u003e\n\u003cp\u003e\n • Over-temperature warning activates\n\u003c\/p\u003e\n\u003cp\u003e\n • Salt deposits prevent the thermostat from moving\n\u003c\/p\u003e\n\u003cp\u003e\n • Thermostat remains open when cold\n\u003c\/p\u003e\n\u003cp\u003e\n • Thermostat does not open in heated water\n\u003c\/p\u003e\n\u003cp\u003e\n • Rubber seal or thermostat frame is damaged\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n Installation considerations:\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Replace thermostats in matched pairs where the engine uses two\n\u003c\/p\u003e\n\u003cp\u003e\n • Inspect thermostat covers and sealing surfaces\n\u003c\/p\u003e\n\u003cp\u003e\n • Replace damaged grommets and seals\n\u003c\/p\u003e\n\u003cp\u003e\n • Remove salt deposits from the thermostat cavity\n\u003c\/p\u003e\n\u003cp\u003e\n • Do not scratch aluminium sealing surfaces\n\u003c\/p\u003e\n\u003cp\u003e\n • Confirm the replacement begins opening near 143°F \/ 62°C\n\u003c\/p\u003e\n\u003cp\u003e\n • Check cooling-water flow after installation\n\u003c\/p\u003e\n\u003cp\u003e\n • Verify both cylinder-bank temperatures during operation\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n 📦 Condition\n\u003c\/p\u003e\n\u003cp\u003e\n \u003cbr\u003e\n\u003c\/p\u003e\n\u003cp\u003e\n • Genuine BRP Evinrude Johnson OEM part\n\u003c\/p\u003e\n\u003cp\u003e\n • Brand new\n\u003c\/p\u003e\n\u003cp\u003e\n • Supplied in genuine or equivalent protective packaging\n\u003c\/p\u003e\n","brand":"BRP (Evinrude\/Johnson)","offers":[{"title":"Default Title","offer_id":53391146877220,"sku":"7 45419 01355 4","price":60.13,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_c5d13546-f8b5-4d5d-98bd-fa65598aae69.jpg?v=1777247388","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/0435491-thermostat-ay","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}