{"title":"BRP Johnson 100HP 2-Stroke Outboard Engine Parts","description":"\u003csection id=\"hero\" style=\"max-width: 920px; padding: 16px 0;\"\u003e\n  \u003cp\u003e\n    This page supports BRP Johnson 2-Stroke 100HP outboard engines and helps you quickly find compatible parts and service information. Below you’ll find maintenance tips, commonly replaced components, and troubleshooting guidance. You can also browse our main Johnson\/Evinrude outboard parts collection. Scroll to the bottom to start browsing parts for this engine, and on the collection page 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-omc-outboard-parts\" style=\"display:inline-block; margin-top:8px; padding:10px 14px; background:#0a62a3; color:#fff; text-decoration:none; border-radius:4px;\"\u003eBrowse All Johnson\/Evinrude Outboard Parts\u003c\/a\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"identify-model\" style=\"max-width: 920px; padding: 12px 0;\"\u003e\n  \u003ch2\u003eHow to Identify Your 100HP Model\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eNameplate location: Look for the model\/serial plate on the starboard side of the transom bracket or on the swivel bracket. The same numbers are often stamped on a core plug on the engine block.\u003c\/li\u003e\n    \u003cli\u003eReading the model code: Johnson models typically start with “J” (Evinrude with “E”), followed by horsepower and configuration. Suffix letters indicate shaft length (L = 20\", X = 25\"), control type, and production year.\u003c\/li\u003e\n    \u003cli\u003e2‑Stroke cues: A V4 2‑stroke will have four spark plug leads on each bank pair, oil injection components (VRO) or premix decals, and carburetors behind the intake silencer.\u003c\/li\u003e\n    \u003cli\u003eCommercial versions: “Commercial” decals and a heavy‑duty gearcase\/skeg are common; gear ratios or props may differ from recreational versions. Always order parts using the exact model code.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"engine-overview\" style=\"max-width: 920px; padding: 12px 0;\"\u003e\n  \u003ch2\u003eEngine Platform Overview\u003c\/h2\u003e\n\n  \u003ch3\u003eV4 2‑Stroke (Standard Recreational)\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 #ddd; padding:6px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:6px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e60° V4, carbureted 2‑stroke with loop‑charged scavenging.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eJohnson 100HP 2‑Stroke models from the late 1990s to early 2000s in 20\" (L) and 25\" (X) shafts.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eLight weight versus 4‑strokes, strong mid‑range torque, straightforward maintenance.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eMany ignition, cooling, and gearcase service parts overlap with 90\/115 V4 families; verify by model\/serial before ordering.\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eV4 2‑Stroke (Commercial Variants)\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 #ddd; padding:6px;\"\u003eFeature\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:6px;\"\u003eDescription\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eConfiguration\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eSame V4 carbureted base with heavy‑duty mounts and gearcase used on \"Commercial\" models (noted around early‑2000s).\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eCommon Models\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e100HP Commercial variants; verify model code for shaft length and gearcase options.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eAdvantages\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eDurable gearcase, robust skeg and hardware for fleet and workboat use.\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eNotes\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003ePropeller fit and gear ratio may differ from recreational units—match the prop by spline count, diameter\/pitch, and model code.\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=\"max-width: 920px; padding: 12px 0;\"\u003e\n  \u003ch2\u003eRoutine Maintenance \u0026amp; Service Parts\u003c\/h2\u003e\n  \u003cp\u003eIntervals below are general guidelines for 2‑stroke outboards; always follow your official service manual and adapt for severe use or saltwater.\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 #ddd; padding:6px;\"\u003eItem\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:6px;\"\u003eInterval*\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:6px;\"\u003eRemarks\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:6px;\"\u003eParts Link\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eGear oil (lower unit)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eEvery 100 hours or annually\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eCheck for water\/milky oil; reseal if contaminated.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-lower-unit-seal-kits\"\u003eJohnson\/Evinrude\/OMC Lower Unit Seal Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eSpark plugs\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eInspect 50 hours; replace 100 hours\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eUse correct heat range and gap; replace as a set.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/spark-plug\"\u003eSpark Plugs\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eFuel filter \/ in‑line filter\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eInspect 50 hours; replace 100 hours\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eReplace more often with ethanol fuel or dirty tanks.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\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:6px; border-bottom:1px solid #eee;\"\u003eWater pump impeller \/ kit\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eEvery 2 seasons or 100 hours\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eShorten interval for sandy\/silty water or weak telltale.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-water-pump-repair-kits\"\u003eJohnson\/Evinrude\/OMC Water Pump Repair Kits\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eAnodes (zincs)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eInspect quarterly; replace when 50% gone\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eMatch anode alloy to your water (zinc, aluminum, or magnesium).\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-anodes\"\u003eJohnson\/Evinrude\/OMC Anodes\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eThermostat inspection\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eAnnually\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eReplace if stuck open\/closed; verify correct temp.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-outboard-parts\"\u003eJohnson\/Evinrude\/OMC Outboard Parts\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eOil injection system (VRO) hoses\/filter or premix\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eInspect each service; replace aged\/ brittle lines\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eUse TC‑W3 oil. Verify pump output; if premixing, 50:1 unless your manual specifies otherwise.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-hoses\"\u003eJohnson\/Evinrude\/OMC Hoses\u003c\/a\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003ePropeller inspection\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eEvery 50 hours\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eCheck for nicks and hub slippage; match pitch to RPM.\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003e\u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-propellers\"\u003eJohnson\/Evinrude\/OMC 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=\"max-width: 920px; padding: 12px 0;\"\u003e\n  \u003ch2\u003eFrequently Used Parts Categories\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eRoutine Service \u0026amp; Tune‑Up: \u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-service-maintenance-kits\"\u003eJohnson\/Evinrude\/OMC Service \u0026amp; Maintenance Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCooling System (Impellers \u0026amp; Pumps): \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-water-pump-repair-kits\"\u003eJohnson\/Evinrude\/OMC Water Pump Repair Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eLower Unit \u0026amp; Seals: \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-lower-unit-seal-kits\"\u003eJohnson\/Evinrude\/OMC Lower Unit Seal Kits\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003ePropellers \u0026amp; Hubs: \u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-propellers\"\u003eJohnson\/Evinrude\/OMC Propellers\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eCorrosion Protection: \u003ca href=\"https:\/\/seasierra.com\/collections\/bombardier-anodes\"\u003eJohnson\/Evinrude\/OMC Anodes\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eFuel System (Filters \u0026amp; Pumps): \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-filters-1\"\u003eFuel Filters\u003c\/a\u003e • \u003ca href=\"https:\/\/seasierra.com\/collections\/fuel-pumps\"\u003eFuel Pumps\u003c\/a\u003e\n\u003c\/li\u003e\n    \u003cli\u003eIgnition \/ Electrical \u0026amp; Starting: \u003ca href=\"https:\/\/seasierra.com\/collections\/starters\"\u003eStarters\u003c\/a\u003e • \u003ca href=\"https:\/\/seasierra.com\/collections\/electrical-items\"\u003eElectrical Items\u003c\/a\u003e\n\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"troubleshooting\" style=\"max-width: 920px; padding: 12px 0;\"\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 #ddd; padding:6px;\"\u003eSymptom\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:6px;\"\u003eCheck First\u003c\/th\u003e\n        \u003cth style=\"text-align:left; border-bottom:1px solid #ddd; padding:6px;\"\u003eRelated Parts\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eWeak telltale or overheat alarm\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eClogged intake screens, thermostat sticking, worn impeller, kinked hoses\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eWater pump kit, thermostat, intake screen, cooling hoses\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003ePoor acceleration or power loss\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eDamaged prop, fouled plugs, restricted fuel filter, stale fuel\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003ePropeller, spark plugs, fuel filter, carburetor service kit\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eHard starting \/ rough idle\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eChoke\/enrichment operation, plug gap, air leaks on fuel\/oil lines, carb sync\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eSpark plugs, fuel hoses, carburetor kit, primer bulb\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eExcessive smoke (2‑stroke)\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eIncorrect premix, oil pump output too high, stuck thermostat running cold\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eOil hoses\/filter, thermostat, plugs\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eGearcase noise or metal in oil\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eWater intrusion, worn bearings, chipped gears, improper shimming\u003c\/td\u003e\n        \u003ctd style=\"padding:6px; border-bottom:1px solid #eee;\"\u003eLower unit seal kit, bearings, shims, prop shaft seals\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=\"max-width: 920px; padding: 12px 0;\"\u003e\n  \u003ch2\u003eFAQs\u003c\/h2\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eAre parts interchangeable across different years or platforms?\u003c\/summary\u003e\n    \u003cp\u003eMany V4 2‑stroke components interchange among 90\/100\/115 families, but ignition, carburetion, and gearcase items can vary by year and commercial vs. recreational variants. Always confirm with the exact model and serial.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I replace the impeller?\u003c\/summary\u003e\n    \u003cp\u003eAs a rule of thumb, every 2 seasons or 100 hours—sooner if the telltale weakens, you ingest sand\/silt, or the engine ran dry. Complete water pump kits restore the wear plate, cup, and seals along with the impeller.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should the lower unit gear oil be changed?\u003c\/summary\u003e\n    \u003cp\u003eAt least annually or every 100 hours. Inspect the drained oil; a milky color indicates water intrusion and the need to reseal the gearcase before further use.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat information helps verify part compatibility?\u003c\/summary\u003e\n    \u003cp\u003eProvide the model number, serial number, shaft length, and control type. Photos of the nameplate and the part you’re replacing are very helpful for confirmation.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/section\u003e\n\n\u003csection id=\"cta\" style=\"max-width: 920px; padding: 16px 0;\"\u003e\n  \u003cp\u003eReady to find parts for your Johnson 100HP 2‑Stroke? Browse the main Johnson\/Evinrude collection by horsepower, year, and model.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/seasierra.com\/collections\/johnson-evinrude-omc-outboard-parts\" style=\"display:inline-block; margin:6px 0 8px; padding:10px 14px; background:#0a62a3; color:#fff; text-decoration:none; border-radius:4px;\"\u003eShop Johnson\/Evinrude Outboard Parts\u003c\/a\u003e\n  \u003cp style=\"font-size:0.95em; color:#444;\"\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":[],"url":"https:\/\/seasierra.com\/collections\/brp-johnson-100hp-2-stroke-outboard-engine-parts.oembed","provider":"SeaSierra","version":"1.0","type":"link"}