{"product_id":"arco-ip001-mercruiser-seawater-pump-impeller","title":"ARCO IP001 Mercury \/ MerCruiser Seawater Pump Impeller | Replaces 47-8M0104229","description":"\u003ch2\u003eARCO IP001 Mercury \/ MerCruiser Seawater Pump Impeller\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e IP001 (ARCO)  |  \u003cstrong\u003eBrand:\u003c\/strong\u003e ARCO Marine  |  \u003cstrong\u003eUPC:\u003c\/strong\u003e 693006030135\u003c\/p\u003e\n\u003cp\u003eARCO \u003cstrong\u003eIP001\u003c\/strong\u003e is a premium flexible impeller for the engine-mounted \u003cstrong\u003ebrass seawater pump\u003c\/strong\u003e used on 2000-and-newer MerCruiser V6 and V8 sterndrive and inboard applications. It is a direct replacement for Mercury \/ Quicksilver \u003cstrong\u003e47-8M0104229\u003c\/strong\u003e and \u003cstrong\u003e47-862232A2\u003c\/strong\u003e — the impeller family fitted to Alpha, Bravo, and high-performance configurations where the later brass pump is installed.\u003c\/p\u003e\n\u003cp\u003eThe impeller features \u003cstrong\u003e8 vanes\u003c\/strong\u003e, an approximate diameter of \u003cstrong\u003e2-5\/8 in. \/ 66.7 mm\u003c\/strong\u003e, and a width of approximately \u003cstrong\u003e2 in. \/ 50.8 mm\u003c\/strong\u003e. The hub incorporates a \u003cstrong\u003etwo-flat drive interface\u003c\/strong\u003e matching the later brass pump shaft — confirm the OEM part number rather than selecting by diameter alone.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cp\u003eFits MerCruiser sterndrive and inboard engines equipped with the \u003cstrong\u003ebrass engine-mounted seawater pump\u003c\/strong\u003e specifying OEM impeller reference \u003cstrong\u003e47-8M0104229\u003c\/strong\u003e or \u003cstrong\u003e47-862232A2\u003c\/strong\u003e. Verified engine families include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMerCruiser MCM 4.5L MPI\u003c\/li\u003e\n\u003cli\u003eMerCruiser 4.3L V6\u003c\/li\u003e\n\u003cli\u003eMerCruiser 5.0L V8\u003c\/li\u003e\n\u003cli\u003eMerCruiser 5.7L \/ 350 CID V8\u003c\/li\u003e\n\u003cli\u003eMerCruiser 6.2L V8\u003c\/li\u003e\n\u003cli\u003eMerCruiser 8.1L \/ 496 CID V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eGenerally applies to 2000-and-newer applications. Confirm by engine serial number and existing OEM impeller number before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eFitment Notice\u003c\/h2\u003e\n\u003cp\u003eBefore ordering, confirm all of the following:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExisting OEM impeller number stamped on the pump or listed in your engine's parts diagram\u003c\/li\u003e\n\u003cli\u003eEngine model and serial number\u003c\/li\u003e\n\u003cli\u003eBrass engine-mounted seawater pump is fitted (not an older-style pump)\u003c\/li\u003e\n\u003cli\u003eOEM cross-reference is \u003cstrong\u003e47-8M0104229\u003c\/strong\u003e or \u003cstrong\u003e47-862232A2\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHub drive configuration (two-flat shaft)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMerCruiser V6 and V8 engines across model years use different impellers depending on pump design. Matching the OEM part number is more reliable than selecting by engine displacement alone.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e IP001\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e ARCO Marine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Flexible Seawater Pump Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVanes:\u003c\/strong\u003e 8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpeller Diameter:\u003c\/strong\u003e approx. 2-5\/8 in. \/ 66.7 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e approx. 2 in. \/ 50.8 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHub Drive:\u003c\/strong\u003e Two-flat interface\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Engine-mounted brass seawater (raw water) cooling pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 693006030135\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eService Interval\u003c\/h2\u003e\n\u003cp\u003eInspect the impeller annually at season launch. Replace immediately if any of the following are observed:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReduced or absent cooling-water flow at the exhaust outlet\u003c\/li\u003e\n\u003cli\u003eEngine overheating during operation\u003c\/li\u003e\n\u003cli\u003eVanes cracked, missing, hardened, or permanently set\u003c\/li\u003e\n\u003cli\u003eEvidence the pump has run dry\u003c\/li\u003e\n\u003cli\u003eHub wear or shaft slippage\u003c\/li\u003e\n\u003cli\u003eScheduled seawater pump service interval reached\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf vane material is missing, inspect all downstream cooling passages and heat exchanger before installing a new impeller — fragments cause blockages and repeat overheating events.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eClose the raw-water intake seacock or raise the drive before disassembly\u003c\/li\u003e\n\u003cli\u003eRemove the seawater pump cover and extract the old impeller\u003c\/li\u003e\n\u003cli\u003eInspect the pump housing bore and wear plate for scoring or corrosion — replace if damaged\u003c\/li\u003e\n\u003cli\u003eRemove all fragments of the old impeller from the pump and downstream passages\u003c\/li\u003e\n\u003cli\u003eConfirm the new impeller hub matches the pump shaft drive configuration\u003c\/li\u003e\n\u003cli\u003eLubricate the impeller and housing bore with a suitable installation lubricant (dish soap or glycerin)\u003c\/li\u003e\n\u003cli\u003eRotate the shaft in its normal operating direction while seating the impeller to pre-set vane direction\u003c\/li\u003e\n\u003cli\u003eReplace the pump cover O-ring or gasket\u003c\/li\u003e\n\u003cli\u003eVerify strong cooling-water flow at the exhaust outlet after startup\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Mercury OEM service kit \u003ca href=\"\/products\/8131440410660\"\u003e47-8M0104229\u003c\/a\u003e includes the impeller and replacement O-ring for a complete pump service.\u003c\/p\u003e\n\n\u003ch2\u003eCross-Reference Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eARCO:\u003c\/strong\u003e IP001\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury \/ Quicksilver:\u003c\/strong\u003e 47-8M0104229\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury \/ Quicksilver:\u003c\/strong\u003e 47-862232A2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMercury:\u003c\/strong\u003e 862232A2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSierra:\u003c\/strong\u003e 18-3016-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMallory:\u003c\/strong\u003e 9-45310\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGLM:\u003c\/strong\u003e 89700\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 693006030135\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/8131440410660\"\u003eMercury MerCruiser Quicksilver Impeller Kit 8M0104229\u003c\/a\u003e — OEM kit with impeller and O-ring\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131537895460\"\u003eSierra Marine Water Pump Impeller 18-3016-1 — Mercury \/ Mariner V6 Outboard\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131642884132\"\u003eSierra Impeller Kit 18-3016-1 — Mercury \/ Mariner Outboard Water Pump Service Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e ARCO IP001 is the go-to replacement for annual seawater pump service on 2000-and-newer MerCruiser V6 and V8 engines running the brass pump. It's a strong choice for pre-season maintenance or post-overheating inspection when you want a reliable aftermarket alternative to the OEM kit. For a complete pump service, pair it with a new pump cover O-ring — the \u003ca href=\"\/products\/8131440410660\"\u003eMercury OEM kit 8M0104229\u003c\/a\u003e includes both if you prefer to source OEM.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon issue:\u003c\/strong\u003e The most frequent fitment error is ordering by engine displacement without checking the pump type. MerCruiser uses more than one seawater pump design across the same engine family — the brass pump and the older-style pump use different impellers that are \u003cem\u003enot interchangeable\u003c\/em\u003e. Always confirm the existing OEM impeller number (47-8M0104229 or 47-862232A2) before ordering. Also note: one catalog source lists Sierra 18-3160-1 beside IP001 — this appears to be a typo. The correct Sierra cross-reference is \u003cstrong\u003e18-3016-1\u003c\/strong\u003e.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51156140654628,"sku":"57-IP001","price":57.59,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/57-IP001.jpg?v=1784926846","url":"https:\/\/marisolmarine.com\/products\/arco-ip001-mercruiser-seawater-pump-impeller","provider":"Marisol Marine Company","version":"1.0","type":"link"}