{"product_id":"universal-lower-unit-gear-oil-pump-3-8inch-8mm-10mm-adapters-outboard-motors","title":"Universal Lower Unit Gear Oil Pump | 3\/8\" 8mm 10mm Adapters","description":"\u003cp\u003eKeep your marine outboard and mechanical equipment running at peak performance with this \u003cstrong\u003eUniversal Lower Unit Gear Oil Pump\u003c\/strong\u003e. Engineered for efficiency and ease of use, this pump delivers stable, consistent lubrication to help extend the life of your gears and mechanical components.\u003c\/p\u003e\n\n\u003cp\u003eWhether you're a boat owner topping off your outboard's lower unit, a maintenance technician in a workshop, or a marine mechanic on the dock, this pump makes the job clean, fast, and hassle-free. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e3 Metal Adapters Included:\u003c\/strong\u003e Comes with 3\/8-inch, 8mm, and 10mm adapters for broad compatibility with standard quart bottles and most marine outboard motors — including Mariner-style fittings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Built from aluminum alloy and PC (polycarbonate) for a lightweight yet sturdy tool that stands up to workshop and marine environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficient Flow Design:\u003c\/strong\u003e Optimized pump mechanism ensures a steady, controlled flow of gear oil — no spills, no mess.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Application:\u003c\/strong\u003e Ideal for outboard motors, lower unit gear cases, factory machinery, gearboxes, and mechanical equipment in workshops or industrial settings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo Battery Required:\u003c\/strong\u003e Manual operation — no power source needed, making it reliable anywhere you work.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Compatibility:\u003c\/strong\u003e Fits standard quart-sized gear oil bottles commonly used for marine and industrial applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum Alloy, PC (Polycarbonate)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdapters:\u003c\/strong\u003e 3\/8 inch, 8mm, 10mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBattery Required:\u003c\/strong\u003e No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible With:\u003c\/strong\u003e Standard quart bottles, Mariner and most outboard lower units\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in Mainland China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Lower Unit Gear Oil Pump Set (pump + 3 metal adapters)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Please allow 1–3 cm measurement variance due to manual sizing. Actual color may vary slightly from product images due to monitor differences.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eGreat for Use With\u003c\/h2\u003e\n\u003cp\u003ePair this pump with other marine and outdoor maintenance essentials from our store. Check out our \u003ca href=\"\/products\/1-percent-better-every-day-motivational-canvas-wall-art-print\"\u003eworkshop motivational wall art\u003c\/a\u003e to keep your garage or boat shed inspired, or browse our full range of tools and accessories.\u003c\/p\u003e\n\n\u003cp\u003eFor more information on safe handling of lubricants and maintenance chemicals in marine and workshop environments, refer to guidance from the \u003ca href=\"https:\/\/www.epa.gov\/oil-spills-prevention-and-preparedness-regulations\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eU.S. Environmental Protection Agency (EPA) — Oil Spill Prevention \u0026amp; Preparedness\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What size bottles does this lower unit gear oil pump fit?\u003c\/h4\u003e\n\u003cp\u003eA: This universal gear oil pump is designed to fit standard quart-sized gear oil bottles. It comes with three metal adapters — 3\/8 inch, 8mm, and 10mm — to ensure compatibility with the most common bottle neck sizes used in marine and industrial applications.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this pump compatible with Mariner and other outboard motors?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! This pump is specifically designed to work with Mariner-style lower unit fill ports and is broadly compatible with most outboard motor brands. The included multi-size adapter set ensures you'll find the right fit for your lower unit drain\/fill plug.\u003c\/p\u003e\n\u003ch4\u003eQ: Does this gear oil pump require batteries or any power source?\u003c\/h4\u003e\n\u003cp\u003eA: No — this is a fully manual pump. It requires no batteries or electricity, making it a reliable, portable tool for boat ramps, docks, workshops, or anywhere you need to service your lower unit gear oil.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the pump made of?\u003c\/h4\u003e\n\u003cp\u003eA: The pump body is constructed from aluminum alloy and polycarbonate (PC), providing a durable yet lightweight build suitable for repeated use in marine and industrial maintenance environments.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What size bottles does this lower unit gear oil pump fit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This universal gear oil pump is designed to fit standard quart-sized gear oil bottles. 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