{"product_id":"jurplix-water-pump-repair-kit-for-mercury-mariner-30-70hp-2-stroke-neoprene-impeller-gaskets-seals","title":"JURPLIX Water Pump Repair Kit for Mercury\/Mariner 30–70hp 2‑Stroke — Neoprene Impeller, Gaskets \u0026 Seals","description":"\u003cp\u003e\u003cstrong\u003eJURPLIX 77177A3 is a complete water pump repair kit designed to replace the impeller and restore cooling performance on compatible Mercury and Mariner 2-stroke outboard engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhether you're preparing your boat for the season or fixing an overheating engine, this kit brings together the parts you need to rebuild the seawater pump quickly and accurately. The assembly includes a flexible neoprene-style impeller, gaskets, seals and hardware matched to original-equipment dimensions so you can return cooling performance to factory tolerance without hunting down individual components.\u003c\/p\u003e\n\n\u003ch3\u003eWhich outboard models and years does this kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis JURPLIX kit matches numerous Mercury\/Mariner 2-stroke engines across several horsepower ranges and production years. It is intended for legacy 2-stroke models and is not compatible with 4-stroke or Japanese-made Mariner motors, so always confirm the engine serial before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits 30–70 hp 2-stroke Mercury\/Mariner variants from the mid-1970s through early 1990s.\u003c\/li\u003e\n  \u003cli\u003eSpecific model ranges include 30hp JET (1989–1997), 35hp (1984–1989), 40hp (1980–1990 variations), 45–70hp dated across 1976–1990.\u003c\/li\u003e\n  \u003cli\u003eCross-references OE numbers: Mercury 46-77177A3 \/ 77177A3 and aftermarket indexes like Sierra 18-3324 and GLM 12100.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat components are included and what materials are used?\u003c\/h3\u003e\n\u003cp\u003eThe kit arrives as a ready-to-install assembly with all the small parts needed to complete a pump rebuild. Components are selected to mimic original fit and finish, with an emphasis on durability in saltwater environments.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFlexible neoprene-type impeller engineered for reliable water flow and wear resistance.\u003c\/li\u003e\n  \u003cli\u003eSeals, gaskets and mounting hardware sized for direct replacement of the OEM pump assembly.\u003c\/li\u003e\n  \u003cli\u003eParts pre-matched to factory dimensions to reduce installation time and risk of leaks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow often should I replace the impeller and maintain the cooling system?\u003c\/h3\u003e\n\u003cp\u003eThe impeller is a wear item that should be checked regularly and replaced proactively to avoid cooling failures. For most recreational use patterns, inspect the pump annually or about every 100 running hours; more frequent checks are wise if you run in abrasive or debris-filled water.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInspect the impeller before each season and after extended idling or debris exposure.\u003c\/li\u003e\n  \u003cli\u003eReplace roughly every 100 hours or yearly to maintain consistent cooling flow.\u003c\/li\u003e\n  \u003cli\u003eUse a full kit to restore seal integrity and avoid repeated disassembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I confirm this is the correct kit for my engine?\u003c\/h3\u003e\n\u003cp\u003eBefore buying, identify the engine model and serial number plate and cross-check the OE part number. If your boat uses a 4-stroke or a Japanese-built Mariner engine, this 2-stroke-specific kit will not fit.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eVerify engine serial\/model plate against Mercury OE 46-77177A3 or 77177A3 numbers.\u003c\/li\u003e\n  \u003cli\u003eConfirm cylinder count and horsepower in the engine’s service documentation.\u003c\/li\u003e\n  \u003cli\u003eContact your mechanic or supply dealer with serial numbers if unsure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Boaters, DIY marine technicians and service shops working with older Mercury\/Mariner 2-stroke outboards who want a single, quality replacement kit to restore seawater pump performance. If you maintain vintage or well-used 2-stroke outboards and prefer to complete pump work in one job rather than sourcing individual parts, this JURPLIX kit is built to simplify the repair while matching common OEM specifications.\u003c\/p\u003e\n\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this kit compatible with 4-stroke Mercury engines?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This kit is for Mercury\/Mariner 2-stroke outboards only; it does not fit 4-stroke or Japanese-made Mariner models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What OE part numbers does the kit replace?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It replaces Mercury 46-77177A3 \/ 77177A3 and corresponds to Sierra 18-3324 and GLM 12100.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"JURPLIX","offers":[{"title":"Default Title","offer_id":48086617850014,"sku":"B0DWZYVCM4","price":54.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/jurplix-77177a3-front-packaging.jpg?v=1785901670","url":"https:\/\/northtrailauto.ca\/products\/jurplix-water-pump-repair-kit-for-mercury-mariner-30-70hp-2-stroke-neoprene-impeller-gaskets-seals","provider":"North Trail Auto","version":"1.0","type":"link"}