{"product_id":"gearcase-drain-screw-sealing-washers-2-pack-marine","title":"Gearcase Drain Screw \u0026 Sealing Washer Set – 2-Pack Marine","description":"\n\u003ch2\u003eMarine Gearcase Drain Screw Set with Sealing Washers – 2-Pack\u003c\/h2\u003e\n\u003cp\u003eKeep your lower unit service running smoothly with this ready-to-install \u003cstrong\u003e2-Piece Gearcase Drain Screw Set\u003c\/strong\u003e. Each pack includes two slotted metal drain screws and two matching sealing washers — everything you need for a complete, leak-free gearcase oil drain service in one convenient package.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect Replacement Hardware:\u003c\/strong\u003e Designed as a drop-in replacement for worn or damaged marine gearcase drain screws during routine lower unit oil service.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete Service Kit:\u003c\/strong\u003e Comes with 2 drain screws and 2 sealing washers — all the hardware needed for a clean, proper gearcase service in a single package.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSlotted Metal Construction:\u003c\/strong\u003e Each screw features durable metal threads and a clearly defined slotted head profile for easy identification and straightforward installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOEM Cross-Reference Ready:\u003c\/strong\u003e Compatible with OEM part numbers \u003cstrong\u003e8M0058389\u003c\/strong\u003e, \u003cstrong\u003e8M0058389-10\u003c\/strong\u003e, and \u003cstrong\u003e79953Q04\u003c\/strong\u003e — use these references to confirm fitment before ordering.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIdeal for Scheduled Maintenance:\u003c\/strong\u003e A smart addition to any boat owner's or marine technician's spare parts inventory for planned gearcase maintenance intervals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-Piece Drain Screw Set with Seal Rings\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOEM Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8M0058389\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReplacement Numbers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8M0058389-10, 79953Q04\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMetal\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDirect Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSelect Marine Engines \/ Lower Units\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Required\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2 × Gearcase Drain Screws\u003c\/li\u003e\n  \u003cli\u003e2 × Sealing Washers (Seal Rings)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003ePlease allow a 1–2 cm measurement tolerance due to manual measurement methods.\u003c\/li\u003e\n  \u003cli\u003eColors may vary slightly from product images due to differences in monitor settings.\u003c\/li\u003e\n  \u003cli\u003eAlways verify OEM part numbers against your engine model before ordering to confirm compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.fueleconomy.gov\/feg\/drive.shtml\" target=\"_blank\" rel=\"noopener\"\u003eFuelEconomy.gov driving efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What OEM part numbers does this gearcase drain screw set replace?\u003c\/h4\u003e\n\u003cp\u003eA: This marine gearcase drain screw set is cross-referenced with OEM part numbers \u003cstrong\u003e8M0058389\u003c\/strong\u003e, \u003cstrong\u003e8M0058389-10\u003c\/strong\u003e, and \u003cstrong\u003e79953Q04\u003c\/strong\u003e. Always verify these numbers against your specific engine model or lower unit to ensure a proper fit before ordering.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is included in this gearcase drain screw service pack?\u003c\/h4\u003e\n\u003cp\u003eA: Each package includes \u003cstrong\u003e2 slotted metal drain screws\u003c\/strong\u003e and \u003cstrong\u003e2 matching sealing washers (seal rings)\u003c\/strong\u003e, providing a complete set of replacement hardware for a full gearcase oil drain service on select marine lower units.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this a direct replacement for my marine lower unit drain screw?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — this set is designed as a \u003cstrong\u003edirect replacement\u003c\/strong\u003e for compatible marine gearcase drain screws. The slotted head profile and metal thread construction allow for straightforward, tool-assisted installation during routine lower unit oil change service.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I know if this drain screw is compatible with my outboard engine?\u003c\/h4\u003e\n\u003cp\u003eA: Cross-reference the listed OEM numbers (8M0058389, 8M0058389-10, 79953Q04) with your engine's parts manual or existing drain screw hardware. If your current drain screw matches any of these numbers, this set is the correct replacement for your gearcase service needs.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What OEM part numbers does this gearcase drain screw set replace?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This marine gearcase drain screw set is cross-referenced with OEM part numbers 8M0058389, 8M0058389-10, and 79953Q04. 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