{"product_id":"arco-wp001-mercruiser-brass-seawater-pump","title":"Arco WP001 Mercury Replacement Water Pump","description":"\u003ch2\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe ARCO WP001 is a complete premium replacement brass seawater pump for compatible 2000 and newer Mercury MerCruiser V6 and V8 engines. It replaces the engine-driven raw-water pump responsible for drawing lake or seawater into the cooling system. The WP001 is designed for MCM 305, 350 and 496 CID applications originally equipped with the brass seawater pump assembly.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eARCO part number: \u003cstrong\u003eWP001\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eComplete replacement seawater pump assembly\u003c\/li\u003e\n\u003cli\u003eFits compatible 2000 and newer Mercury MerCruiser engines\u003c\/li\u003e\n\u003cli\u003eDesigned for engines equipped with the brass raw-water pump\u003c\/li\u003e\n\u003cli\u003eSupported V6 and V8 applications\u003c\/li\u003e\n\u003cli\u003eCovers 305, 350 and 496 CID engine families\u003c\/li\u003e\n\u003cli\u003eNew premium replacement assembly—not a rebuilt pump\u003c\/li\u003e\n\u003cli\u003eEvery ARCO pump is tested before packaging\u003c\/li\u003e\n\u003cli\u003eUPC \/ GTIN: \u003cstrong\u003e693006030098\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirmed applications include compatible \u003cstrong\u003e2000 and newer MCM V6 and V8 engines\u003c\/strong\u003e equipped with the brass seawater pump, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMerCruiser V6 applications\u003c\/li\u003e\n\u003cli\u003eMerCruiser 305 CID \/ 5.0L V8 applications\u003c\/li\u003e\n\u003cli\u003eMerCruiser 350 CID \/ 5.7L V8 applications\u003c\/li\u003e\n\u003cli\u003eMerCruiser 496 CID \/ 8.1L V8 applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFitment depends on the installed brass seawater-pump configuration and original pump number. Engine displacement alone is not sufficient because accessory-drive and cooling-system arrangements can vary between model years and serial ranges.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBefore ordering, confirm that the engine is a 2000-or-newer Mercury MerCruiser application using the brass seawater pump and that the original assembly matches one of these numbers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMercury \u003cstrong\u003e8M0139984\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMercury \u003cstrong\u003e8M0118062\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMercury \u003cstrong\u003e862914A13\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSierra \u003cstrong\u003e18-3160-1\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo not confuse the WP001 with the older \u003ca href=\"\/products\/arco-wp004-mercruiser-replacement-water-pump\"\u003eARCO WP004\u003c\/a\u003e V-belt, two-piece MerCruiser pump. The WP001 is intended for the later brass seawater-pump configuration.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace the complete seawater pump when:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCooling-water discharge becomes weak\u003c\/li\u003e\n\u003cli\u003eEngine temperature rises despite a serviceable impeller\u003c\/li\u003e\n\u003cli\u003eThe pump housing is internally scored or corroded\u003c\/li\u003e\n\u003cli\u003eWater leaks from the shaft seal\u003c\/li\u003e\n\u003cli\u003eThe shaft develops excessive movement\u003c\/li\u003e\n\u003cli\u003eThe bearing becomes noisy or rough\u003c\/li\u003e\n\u003cli\u003eThe pump repeatedly loses prime\u003c\/li\u003e\n\u003cli\u003eThe housing, pulley or mounting points are damaged\u003c\/li\u003e\n\u003cli\u003eImpeller replacement no longer restores proper pumping performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA new impeller cannot compensate for a badly worn housing, damaged shaft, failed seal or loose bearing.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm the engine serial number and original pump reference before removal.\u003c\/li\u003e\n\u003cli\u003eClose the seawater intake seacock or otherwise isolate the water supply.\u003c\/li\u003e\n\u003cli\u003eDisconnect the battery before working around the belt drive.\u003c\/li\u003e\n\u003cli\u003eRecord the original belt routing and hose locations.\u003c\/li\u003e\n\u003cli\u003eInspect the drive belt, pulley, hoses and clamps while the pump is removed.\u003c\/li\u003e\n\u003cli\u003eClean all hose connections and mounting surfaces.\u003c\/li\u003e\n\u003cli\u003eTransfer any required pulley or mounting hardware according to the service procedure.\u003c\/li\u003e\n\u003cli\u003eAlign the pump and pulley carefully before tensioning the belt.\u003c\/li\u003e\n\u003cli\u003ePrime the replacement pump before initial startup where required.\u003c\/li\u003e\n\u003cli\u003eRestore the seawater supply before starting the engine.\u003c\/li\u003e\n\u003cli\u003eCheck immediately for leaks, correct belt tracking and strong exhaust-water discharge.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProfessional installation is recommended when pulley transfer, belt alignment or cooling-system diagnosis is required.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate \/ Replacement Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eARCO: \u003cstrong\u003eWP001\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMercury MerCruiser: \u003cstrong\u003e8M0139984\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMercury MerCruiser: \u003cstrong\u003e8M0118062\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMercury MerCruiser: \u003cstrong\u003e862914A13\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eQuicksilver: \u003cstrong\u003e8M0139984\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eQuicksilver: \u003cstrong\u003e8M0118062\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSierra: \u003cstrong\u003e18-3160-1\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eUPC \/ GTIN: \u003cstrong\u003e693006030098\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eCompatible \u0026amp; Related Parts\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWhen servicing the MerCruiser brass seawater pump, consider these related parts:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/mercury-mercruiser-seawater-pump-impeller-kit-8m0137219\"\u003eMercury MerCruiser Seawater Pump Impeller Kit 8M0137219\u003c\/a\u003e – OEM impeller kit for brass pump service\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/mercury-mercruiser-quicksilver-impeller-kit-8m0104229\"\u003eMercury MerCruiser Quicksilver Impeller Kit 8M0104229\u003c\/a\u003e – OEM impeller kit\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/sierra-3160-1-mercruiser-sea-water-pump-brass\"\u003eSierra 3160-1 MerCruiser Sea Water Pump – Brass\u003c\/a\u003e – alternative brass pump assembly (Sierra 18-3160-1)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/arco-wp004-mercruiser-replacement-water-pump\"\u003eARCO WP004 MerCruiser Replacement Water Pump\u003c\/a\u003e – older V-belt two-piece MerCruiser pump variant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe most important identification detail is the \u003cstrong\u003ebrass seawater-pump configuration\u003c\/strong\u003e. The WP001 covers several later MerCruiser V6 and V8 applications, but it should still be matched by the original pump number or engine serial-number diagram rather than displacement alone.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51156140523556,"sku":"57-WP001","price":556.49,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/013d5dc2-cee2-405c-a9f6-c00e20b5c80c.png?v=1785207278","url":"https:\/\/marisolmarine.com\/products\/arco-wp001-mercruiser-brass-seawater-pump","provider":"Marisol Marine Company","version":"1.0","type":"link"}