{"title":"Johnson 2-Stroke 85-135HP Outboard Engine Parts","description":"\u003csection id=\"hero\" style=\"padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003e\n    This page is tailored for Johnson 2‑Stroke 85–135HP outboard engines. Use it to find compatible parts and practical service information, including maintenance tips, frequently replaced components, and troubleshooting guidance. You can also browse the main Johnson\/Evinrude collection. Scroll down to start exploring parts guidance for this engine, and remember that on the collection page you can use the Filter \u0026amp; Sort controls to narrow results by horsepower, year range, and part category.\n  \u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude\" style=\"display:inline-block; padding:10px 14px; background:#0ea5e9; color:#fff; text-decoration:none; border-radius:6px;\"\u003eBrowse All Johnson\/Evinrude Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eHow to Identify Your 85–135HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eLocate the nameplate\/serial tag on the transom bracket or swivel bracket. It includes model, serial, and sometimes a build code.\u003c\/li\u003e\n    \u003cli\u003eRead the Johnson\/Evinrude model code: prefixes indicate brand and horsepower; suffix letters often denote shaft length (S\/L\/XL), steering\/control type, and model year.\u003c\/li\u003e\n    \u003cli\u003eConfirm stroke and platform: these engines are 2‑Stroke V4 models; earlier units are Crossflow, later units are 60° Loop‑charged. Cowling decals and intake\/exhaust cover layout can help distinguish them.\u003c\/li\u003e\n    \u003cli\u003eNote gearcase style and shaft length (e.g., 20\" or 25\") when selecting water pump kits, seals, and propellers.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"platforms\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003ePlatform Overview\u003c\/h2\u003e\n  \u003ch3\u003eV4 Crossflow 2‑Stroke (commonly 85–135HP, late 1970s–early 1990s)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCarbureted V4 2‑Stroke Crossflow cooling\/scavenging layout.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e85, 90, 100, 110, 115, 120, 130, 135HP V4 Crossflow variants.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eSimple, robust design; strong holeshot; widely available service parts.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eThermostats and water pump kits are routine service items. Many gearcase parts interchange across V4 years—verify model\/shaft before ordering.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eV4 60° Loop‑Charged 2‑Stroke (commonly 90–135HP, early 1990s–2000s)\u003c\/h3\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCarbureted or oil‑injected V4 2‑Stroke with loop‑charged scavenging.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e90, 115, 130, 135HP V4 Loop‑charged variants.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eImproved mid‑range torque and fuel efficiency vs. Crossflow.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCooling and fuel components can differ from Crossflow versions—use the exact model number to confirm parts.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"service-kits\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for 2‑Stroke V4s. Always follow the official service manual for your exact model and operating conditions.\u003c\/p\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eLower unit gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eChange after break‑in and before winter storage; inspect for water or metal.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-lower-unit-seal-kits\"\u003eJohnson\/Evinrude Lower Unit Seal Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect every 50–100 hrs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eReplace if fouled, worn, or at annual service; gap per manual.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plug Selection\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eFuel filter \/ water‑separating filter\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEvery 100 hrs or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eReplace more often if using ethanol fuel or operating in harsh conditions.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eWater pump impeller \/ kit\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect annually; replace 2–3 yrs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEssential for cooling; replace sooner if stream is weak or after an overheat.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-water-pump-repair-kits\"\u003eJohnson\/Evinrude Water Pump Repair Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eThermostats\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEvery 2–3 yrs\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eStuck stats can cause cold‑running or overheat; replace in pairs where applicable.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude\"\u003eJohnson\/Evinrude Collection\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAnodes (corrosion protection)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect 6 months; replace as needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eUse alloy appropriate to water type (salt, brackish, fresh).\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-anodes\"\u003eJohnson\/Evinrude Anodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCarburetor clean\/rebuild\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAs needed\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eAddress hard starts, surging, or poor idle; synchronize multi‑carb setups.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/carburetor\"\u003eCarburetor \u0026amp; Components\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eOil injection (VRO) inspection\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEvery season\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eVerify pump output, lines, and alarms; if removed, follow approved premix ratio.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-pumps\"\u003eFuel \u0026amp; VRO Pumps\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003ePropeller \u0026amp; hardware check\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eEvery trip\/seasonally\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eRemove to inspect for fishing line; check hub and thrust washer.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-propellers\"\u003eJohnson\/Evinrude Propellers\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"common-parts\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eCooling System – \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-water-pump-repair-kits\"\u003eWater Pump Repair Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System – \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-pumps\"\u003eFuel Pumps\u003c\/a\u003e and \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical – \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eGearcase Seals – \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-lower-unit-seal-kits\"\u003eLower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection – \u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-anodes\"\u003eAnodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropellers \u0026amp; Hardware – \u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-propellers\"\u003eJohnson\/Evinrude Propellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCarburetor \/ Induction – \u003ca href=\"https:\/\/seasierra.com\/collections\/carburetor\"\u003eCarburetor\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eCommon Symptoms \u0026amp; Quick Checks\u003c\/h2\u003e\n  \u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #e5e7eb; padding:8px;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eWeak tell‑tale stream \/ overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eInspect intake screens for debris; verify impeller condition; test thermostats.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eWater pump kit, thermostat(s), intake screen, anodes\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003ePoor acceleration \/ power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eCheck fuel quality, primer bulb, and filters; inspect carb synchronization.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eFuel filter, fuel pump, carburetor rebuild kit, spark plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eVerify choke\/enrichment operation; inspect plugs and fuel lines for air leaks.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eSpark plugs, carburetor kit, fuel hoses\/primer bulb\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eExcessive smoke (2‑Stroke)\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eConfirm oiling method (VRO vs. premix) and ratio; check thermostat for cold‑running.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eVRO pump, oil lines, thermostat\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:8px;\"\u003eGearcase noise \/ metal in gear oil\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eDrain and inspect oil; check for water intrusion and prop‑shaft fishing line.\u003c\/td\u003e\n        \u003ctd style=\"padding:8px;\"\u003eLower unit seal kit, bearings, gear oil\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"faq\" style=\"margin-top:24px;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable between Crossflow and Loop‑charged V4 models?\u003c\/summary\u003e\n    \u003cp\u003eSome items (propellers, many fasteners, certain gearcase components) can interchange, but cooling, fuel, and ignition parts often differ. Always match parts to the exact model number and year.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the water pump impeller?\u003c\/summary\u003e\n    \u003cp\u003eInspect annually and replace every 2–3 seasons under normal use, or immediately after any overheat, sand ingestion, or weak tell‑tale stream.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I change lower unit gear oil?\u003c\/summary\u003e\n    \u003cp\u003eAt least once per year or every 100 hours, whichever comes first. Change before winter storage and check for signs of water or metal particles.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information do you need to confirm part compatibility?\u003c\/summary\u003e\n    \u003cp\u003ePlease provide the full model number from the bracket tag, serial number, estimated year, shaft length, and any old part numbers or photos of the part in question.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"margin-top:24px; padding:16px; border:1px solid #e5e7eb; border-radius:8px;\"\u003e\n  \u003cp\u003eReady to find parts for your Johnson V4 2‑Stroke? Browse the main collection by horsepower, year, and model to locate compatible components.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude\" style=\"display:inline-block; padding:10px 14px; background:#10b981; color:#fff; text-decoration:none; border-radius:6px;\"\u003eShop Johnson\/Evinrude Collection\u003c\/a\u003e\n  \u003cp style=\"margin-top:8px; color:#374151;\"\u003eIf you’re unsure about your model, send us a photo of the nameplate and the part you need and we’ll help verify compatibility.\u003c\/p\u003e\n\u003c\/section\u003e","products":[{"product_id":"thermostat-fits-johnson-evinrude-85-135-hp-replaces-384719-0384719-0777838","title":"Aftermarket Vernatherm Thermostat for Johnson\/Evinrude 3- and 4-Cylinder Outboards, 1985–1990 — Replaces 384719, 0384719 and 0777838","description":"\u003cstyle\u003e\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\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  table.ss-table th {\n    white-space:nowrap;\n    word-break:normal;\n    letter-spacing:normal;\n    font-weight:600;\n    background:#f8fafc;\n  }\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\u003csection\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cp\u003eThis is an aftermarket \u003cstrong\u003eVernatherm thermostat\u003c\/strong\u003e for most 3- and 4-cylinder Johnson\/Evinrude outboard applications from 1985 through 1990. It is designed to help the engine maintain its intended operating temperature during normal use.\u003c\/p\u003e\n\u003cp\u003eThe thermostat replaces Johnson\/Evinrude\/OMC references \u003cstrong\u003e384719\u003c\/strong\u003e, \u003cstrong\u003e0384719\u003c\/strong\u003e and \u003cstrong\u003e0777838\u003c\/strong\u003e. It is also listed as an interchange for Sierra Marine \u003cstrong\u003e18-3560\u003c\/strong\u003e. The company specification identifies the standard Vernatherm rating as 105°F (40.5°C), with an actual operating temperature of 143°F (62°C).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAftermarket replacement Vernatherm thermostat.\u003c\/li\u003e\n\u003cli\u003eFits most 3- and 4-cylinder Johnson\/Evinrude outboards within the listed application range.\u003c\/li\u003e\n\u003cli\u003eStandard rating: 105°F (40.5°C).\u003c\/li\u003e\n\u003cli\u003eActual operating temperature specification: 143°F (62°C).\u003c\/li\u003e\n\u003cli\u003eSold as one thermostat; gasket or seal is not included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n\u003cp\u003eUse these references to compare the thermostat with the part being replaced. Confirm the engine application before ordering.\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 or Reference\u003c\/th\u003e\n        \u003cth\u003ePart Number\u003c\/th\u003e\n        \u003cth\u003eReference Type\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJohnson\/Evinrude\/OMC\u003c\/td\u003e\n        \u003ctd\u003e384719\u003c\/td\u003e\n        \u003ctd\u003eOEM replacement reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJohnson\/Evinrude\/OMC\u003c\/td\u003e\n        \u003ctd\u003e0384719\u003c\/td\u003e\n        \u003ctd\u003eOEM replacement reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJohnson\/Evinrude\/OMC\u003c\/td\u003e\n        \u003ctd\u003e0777838\u003c\/td\u003e\n        \u003ctd\u003eOEM replacement reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eSierra Marine\u003c\/td\u003e\n        \u003ctd\u003e18-3560\u003c\/td\u003e\n        \u003ctd\u003eAftermarket interchange reference\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eOMC\/BRP or Mallory reference\u003c\/td\u003e\n        \u003ctd\u003eBRP9-43027\u003c\/td\u003e\n        \u003ctd\u003eAdditional reference listed by the supplier\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\u003eThis thermostat is listed for most 3- and 4-cylinder Johnson\/Evinrude outboards manufactured from 1985 through 1990. The application information below is a guide; exact fitment may depend on the complete engine model and serial-number range.\u003c\/p\u003e\n\u003cdiv class=\"ss-table-wrap\"\u003e\n  \u003ctable class=\"ss-table\" aria-label=\"Engine and Model Compatibility\"\u003e\n    \u003cthead\u003e\n      \u003ctr\u003e\n        \u003cth\u003eBrand\u003c\/th\u003e\n        \u003cth\u003eApplication\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 Reference\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n        \u003ctd\u003e3- and 4-cylinder outboards\u003c\/td\u003e\n        \u003ctd\u003eMost applications\u003c\/td\u003e\n        \u003ctd\u003eNot specified\u003c\/td\u003e\n        \u003ctd\u003e1985–1990\u003c\/td\u003e\n        \u003ctd\u003e384719 \/ 0384719 \/ 0777838\u003c\/td\u003e\n        \u003ctd\u003eSupplier-listed general application; verify the complete model and serial number.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n        \u003ctd\u003e60, 125 and 185 hp applications\u003c\/td\u003e\n        \u003ctd\u003e60 \/ 125 \/ 185\u003c\/td\u003e\n        \u003ctd\u003eNot specified\u003c\/td\u003e\n        \u003ctd\u003e1989–1990\u003c\/td\u003e\n        \u003ctd\u003e384719\u003c\/td\u003e\n        \u003ctd\u003eApplication listed in the Sierra reference catalog.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n        \u003ctd\u003e65 hp applications\u003c\/td\u003e\n        \u003ctd\u003e65\u003c\/td\u003e\n        \u003ctd\u003eNot specified\u003c\/td\u003e\n        \u003ctd\u003e1987–1989\u003c\/td\u003e\n        \u003ctd\u003e384719\u003c\/td\u003e\n        \u003ctd\u003eApplication listed in the Sierra reference catalog.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n        \u003ctd\u003e70, 200 and 225 hp applications\u003c\/td\u003e\n        \u003ctd\u003e70 \/ 200 \/ 225\u003c\/td\u003e\n        \u003ctd\u003eNot specified\u003c\/td\u003e\n        \u003ctd\u003e1986–1990\u003c\/td\u003e\n        \u003ctd\u003e384719\u003c\/td\u003e\n        \u003ctd\u003eApplication listed in the Sierra reference catalog.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n        \u003ctd\u003e120, 140 and 300 hp applications\u003c\/td\u003e\n        \u003ctd\u003e120 \/ 140 \/ 300\u003c\/td\u003e\n        \u003ctd\u003eNot specified\u003c\/td\u003e\n        \u003ctd\u003e1985–1990\u003c\/td\u003e\n        \u003ctd\u003e384719\u003c\/td\u003e\n        \u003ctd\u003eApplication listed in the Sierra reference catalog.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n        \u003ctd\u003e275 hp applications\u003c\/td\u003e\n        \u003ctd\u003e275\u003c\/td\u003e\n        \u003ctd\u003eNot specified\u003c\/td\u003e\n        \u003ctd\u003e1985–1988\u003c\/td\u003e\n        \u003ctd\u003e384719\u003c\/td\u003e\n        \u003ctd\u003eApplication listed in the Sierra reference catalog.\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\u003eVernatherm thermostat\u003c\/dd\u003e\n  \u003cdt\u003eProduct Configuration\u003c\/dt\u003e\n  \u003cdd\u003eSingle thermostat; not a kit\u003c\/dd\u003e\n  \u003cdt\u003eApplication\u003c\/dt\u003e\n  \u003cdd\u003eMost 3- and 4-cylinder Johnson\/Evinrude outboards, 1985–1990\u003c\/dd\u003e\n  \u003cdt\u003eStandard Rating\u003c\/dt\u003e\n  \u003cdd\u003e105°F (40.5°C)\u003c\/dd\u003e\n  \u003cdt\u003eActual Operating Temperature\u003c\/dt\u003e\n  \u003cdd\u003e143°F (62°C)\u003c\/dd\u003e\n  \u003cdt\u003eOEM Replacement References\u003c\/dt\u003e\n  \u003cdd\u003e384719, 0384719 and 0777838\u003c\/dd\u003e\n  \u003cdt\u003eAftermarket Interchange\u003c\/dt\u003e\n  \u003cdd\u003eSierra Marine 18-3560\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;\"\u003e1 x\u003c\/span\u003e Vernatherm thermostat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA thermostat gasket, housing gasket or seal is not included. Replace the seal or gasket as required for the specific engine application.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003col\u003e\n  \u003cli\u003eConfirm the replacement reference and complete engine model before installation.\u003c\/li\u003e\n  \u003cli\u003eMake sure the engine is completely cool and follow the service manual safety procedure.\u003c\/li\u003e\n  \u003cli\u003eLocate the thermostat housing and place a suitable drain pan beneath the work area.\u003c\/li\u003e\n  \u003cli\u003eRemove the housing cover carefully, keeping track of fastener locations.\u003c\/li\u003e\n  \u003cli\u003eRemove the old thermostat and all deteriorated gasket or seal material.\u003c\/li\u003e\n  \u003cli\u003eClean the mating surfaces without damaging the housing or cylinder-head sealing area.\u003c\/li\u003e\n  \u003cli\u003eInstall the new thermostat in the same orientation as the original part.\u003c\/li\u003e\n  \u003cli\u003eInstall the correct new gasket or seal for the engine application; it is sold separately.\u003c\/li\u003e\n  \u003cli\u003eReinstall the housing cover and tighten the fasteners to the engine manufacturer’s specified torque.\u003c\/li\u003e\n  \u003cli\u003eRestore the cooling system as required, start the engine, and check for proper water flow and leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat temperature is this thermostat rated for?\u003c\/summary\u003e\n  \u003cp\u003eThe supplier lists a standard Vernatherm rating of 105°F (40.5°C) and an actual operating temperature specification of 143°F (62°C).\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat engines does this thermostat fit?\u003c\/summary\u003e\n  \u003cp\u003eIt is listed for most 3- and 4-cylinder Johnson\/Evinrude outboards in the 1985–1990 application range. Because applications can vary by model and serial number, compare the original thermostat and verify the complete engine identification before ordering.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this a complete thermostat kit?\u003c\/summary\u003e\n  \u003cp\u003eNo. This listing is for one thermostat only. A thermostat gasket, housing gasket or seal is not included.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eDoes this fit V4 or V6 cross-flow engines?\u003c\/summary\u003e\n  \u003cp\u003eThe supplier describes this product for most 3- and 4-cylinder applications. Do not assume fitment for a V4 or V6 engine unless the complete engine model and serial-number information confirms the application.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eWhat are common signs of a faulty thermostat?\u003c\/summary\u003e\n  \u003cp\u003ePossible symptoms include slow warm-up, abnormal operating temperature, overheating, or inconsistent cooling-system performance. Diagnose the complete cooling system before replacing the thermostat.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n  \u003csummary\u003eIs this an OEM thermostat?\u003c\/summary\u003e\n  \u003cp\u003eNo. This is an aftermarket replacement for the listed Johnson\/Evinrude\/OMC references.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify the complete engine model, year and serial-number range before purchase.\u003c\/li\u003e\n  \u003cli\u003eCompare the replacement part with the original thermostat, including its shape and sealing arrangement.\u003c\/li\u003e\n  \u003cli\u003eDo not install or remove cooling-system components while the engine is hot.\u003c\/li\u003e\n  \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n  \u003cli\u003eProfessional installation is recommended when the correct application or installation procedure is uncertain.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMarine Replacement Parts\u003c\/strong\u003e — Practical aftermarket components for common outboard service needs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication-Focused Listings\u003c\/strong\u003e — Reference numbers and application information are provided to help with part comparison.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment Guidance\u003c\/strong\u003e — Always verify the complete engine identification before installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723985391931,"sku":"23TH625","price":20.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/Thermostat_for_Johnson_Evierude_85-135_HP_384719_0384719_0777838___384719_0384719_-_JLM_MARINE-8291336.jpg?v=1763039436"}],"url":"https:\/\/seasierra.com\/collections\/johnson-2-stroke-85-135hp-outboard-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}