{"product_id":"merc-277","title":"Mercury Mariner Oil Injection Reservoir Cap Assembly - 36-43300A9","description":"\u003cp\u003eThe Mercury MerCruiser Quicksilver \u003cstrong\u003e36-43300A9\u003c\/strong\u003e is a genuine Mercury Marine OEM \u003cstrong\u003eoil injection cap assembly\u003c\/strong\u003e for select Mercury, Mariner, and SportJet 2-stroke oil injection reservoir systems. This cap assembly installs on the engine-mounted oil tank and combines the reservoir cap, sealing function, float\/sender assembly, and warning-system leads used to monitor oil level. It is used where the Mercury parts diagram specifically calls for \u003cstrong\u003e43300A9 \/ 36-43300A9\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Mercury Marine factory OEM oil injection cap assembly.\u003c\/li\u003e\n\u003cli\u003eMercury\/MerCruiser part number: \u003cstrong\u003e36-43300A9\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: \u003cstrong\u003e43300A9\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eComplete cap-style reservoir sender assembly for select 2-stroke oil injection systems.\u003c\/li\u003e\n\u003cli\u003eIncludes molded oil tank cap with integrated float\/sender components.\u003c\/li\u003e\n\u003cli\u003eDesigned for the engine-mounted oil reservoir, not the remote boat-mounted supply tank unless the parts diagram specifies this cap.\u003c\/li\u003e\n\u003cli\u003eElectrical sender leads are commonly associated with the oil warning circuit, including ground and warning-module connection points.\u003c\/li\u003e\n\u003cli\u003eUsed to help seal the oil reservoir and provide low-oil level warning input on compatible engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCommon where-used application groups include select Mercury and Mariner 2-stroke \/ 2-cycle outboards and SportJet applications by serial number and oil injection system configuration, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e105 HP, 140 HP, 210 HP, and 240 HP SportJet\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003e135 HP, 150 HP, 175 HP, 200 HP, 225 HP, and 250 HP V6 outboard\u003c\/strong\u003e applications where specified\u003c\/li\u003e\n\u003cli\u003eSelect \u003cstrong\u003eEFI, Black Max, XR2, XR4, XR6, Pro Max, SeaPro, Marathon, and performance V6\u003c\/strong\u003e oil injection layouts where specified\u003c\/li\u003e\n\u003cli\u003eEngine-mounted 2-stroke oil reservoir assemblies using cap assembly \u003cstrong\u003e43300A9\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse this cap assembly only where the Mercury\/Mariner parts diagram calls for \u003cstrong\u003e36-43300A9 \/ 43300A9\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm fitment by engine serial number, oil injection reservoir style, warning-module wiring, and exact Mercury oil tank diagram before ordering. Mercury used different oil tank caps, float senders, remote tank caps, and warning harness layouts across similar 2-stroke engines, so matching the cap by horsepower alone is not enough.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace this cap assembly if the oil reservoir cap is cracked, leaking, loose, no longer sealing properly, or if the float\/sender circuit is causing false low-oil warnings after the reservoir and wiring have been inspected. It should also be replaced if the wiring is brittle, damaged, oil-soaked, corroded, or if the internal float mechanism no longer moves freely with the oil level.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInstall this cap only on the reservoir and diagram location that call for \u003cstrong\u003e36-43300A9 \/ 43300A9\u003c\/strong\u003e. Inspect the oil tank threads, sealing surface, wiring connectors, warning module leads, and reservoir condition before installation. After replacement, verify the cap seals correctly, the harness is routed away from heat and moving linkages, and the low-oil warning circuit operates according to the Mercury service manual for the specific engine.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e36-43300A9\u003c\/strong\u003e — Mercury\/MerCruiser formatted part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e43300A9\u003c\/strong\u003e — Manufacturer part number\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e43300A1\u003c\/strong\u003e — earlier cap assembly reference to verify by serial number and diagram\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e43300A5\u003c\/strong\u003e — earlier cap assembly reference to verify by serial number and diagram\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e43300A6\u003c\/strong\u003e — earlier cap assembly reference to verify by serial number and diagram\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e99024A4\u003c\/strong\u003e — earlier oil cap\/sender reference to verify by serial number and diagram\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eOil injection cap assemblies should be matched by reservoir style and warning-system wiring, not just by engine horsepower. A leaking cap, failed float, or incorrect sender can create low-oil alarms or oil-feed concerns, so the tank, cap seal, wiring, and warning module should be checked together before returning the engine to service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563859378212,"sku":"43300A9","price":123.85,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/b423dd86-42c4-4818-a1ef-12c502e5f481.png?v=1781047705","url":"https:\/\/marisolmarine.com\/products\/merc-277","provider":"Marisol Marine Company","version":"1.0","type":"link"}