{"product_id":"arco-wp003-volvo-penta-replacement-water-pump","title":"Arco WP003 Volvo Replacement Water Pump","description":"\u003ch2\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe ARCO WP003 is a complete premium replacement engine-cooling water pump for compatible Volvo Penta, Indmar and GM-based marine engine applications. It is designed as a direct replacement for Volvo Penta water pump \u003cstrong\u003e3860703\u003c\/strong\u003e and Sierra \u003cstrong\u003e18-3587-1\u003c\/strong\u003e, providing a complete replacement assembly when the original pump is leaking, worn or no longer circulating coolant effectively.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eARCO part number: \u003cstrong\u003eWP003\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eComplete replacement engine water pump\u003c\/li\u003e\n\u003cli\u003eFits compatible \u003cstrong\u003eIndmar Ford 351\u003c\/strong\u003e applications\u003c\/li\u003e\n\u003cli\u003eFits most supported \u003cstrong\u003eGM-based marine engines\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eReplaces Volvo Penta \u003cstrong\u003e3860703\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eCross-references Sierra \u003cstrong\u003e18-3587-1\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eManufactured as a premium OEM-style replacement\u003c\/li\u003e\n\u003cli\u003eEach ARCO pump is tested before packaging\u003c\/li\u003e\n\u003cli\u003eCovered by the manufacturer's ARCO Assurance warranty under its published terms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirmed application references include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIndmar Ford \u003cstrong\u003e351\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMost compatible GM-based marine engines\u003c\/li\u003e\n\u003cli\u003eVolvo Penta installations originally equipped with water pump \u003cstrong\u003e3860703\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFitment is based on the original pump number and engine configuration. Engine make or displacement alone is not sufficient because similar Ford- and GM-based marine engines may use different pulleys, mounting patterns or cooling-system arrangements.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBefore ordering, confirm that the existing pump or engine parts diagram identifies one of the following:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eARCO \u003cstrong\u003eWP003\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eVolvo Penta \u003cstrong\u003e3860703\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSierra \u003cstrong\u003e18-3587-1\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe WP003 is identified as a Volvo Penta replacement because it crosses directly to Volvo Penta 3860703, while its supported applications also include Indmar Ford 351 and most compatible GM-based marine engines. Verify the original pump number, pulley arrangement and engine serial number before installation.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace the water pump when:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCoolant leaks from the pump shaft, seal or housing\u003c\/li\u003e\n\u003cli\u003eThe pulley develops noticeable movement or wobble\u003c\/li\u003e\n\u003cli\u003eThe bearing becomes noisy\u003c\/li\u003e\n\u003cli\u003eEngine temperature rises despite adequate coolant\u003c\/li\u003e\n\u003cli\u003eCoolant circulation becomes weak or inconsistent\u003c\/li\u003e\n\u003cli\u003eThe housing is cracked or heavily corroded\u003c\/li\u003e\n\u003cli\u003eThe pump shaft binds or becomes difficult to turn\u003c\/li\u003e\n\u003cli\u003eThe original pump has reached the end of its service life\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA leaking shaft seal or loose bearing usually indicates that the complete pump assembly should be replaced rather than repaired.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDisconnect the battery before beginning service.\u003c\/li\u003e\n\u003cli\u003eAllow the engine to cool completely.\u003c\/li\u003e\n\u003cli\u003eDrain the cooling system to a level below the pump.\u003c\/li\u003e\n\u003cli\u003eRecord the belt routing before removing the original pump.\u003c\/li\u003e\n\u003cli\u003eInspect the drive belt, pulley and mounting hardware.\u003c\/li\u003e\n\u003cli\u003eClean the engine's mounting surface thoroughly.\u003c\/li\u003e\n\u003cli\u003eInstall the correct gasket or sealing components required by the engine service procedure.\u003c\/li\u003e\n\u003cli\u003eTighten mounting hardware evenly to the specified torque.\u003c\/li\u003e\n\u003cli\u003eAlign the pulley with the other belt-driven accessories.\u003c\/li\u003e\n\u003cli\u003eRefill the cooling system with the specified coolant mixture.\u003c\/li\u003e\n\u003cli\u003eBleed trapped air according to the engine manufacturer's procedure.\u003c\/li\u003e\n\u003cli\u003eRun the engine and inspect for leaks, correct belt tracking and stable operating temperature.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProfessional installation is recommended when pulley transfer, belt alignment or cooling-system bleeding 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\u003eWP003\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eVolvo Penta: \u003cstrong\u003e3860703\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSierra: \u003cstrong\u003e18-3587-1\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 Volvo Penta raw-water cooling system, consider these related parts:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/volvo-penta-impeller-kit-3588475-genuine-oem-raw-water-pump-service-kit\"\u003eVolvo Penta Impeller Kit 3588475\u003c\/a\u003e – genuine OEM raw-water pump service kit\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/volvo-penta-impeller-kit-22994993-raw-water-pump-service-kit\"\u003eVolvo Penta Impeller Kit 22994993\u003c\/a\u003e – raw-water pump service kit\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/volvo-penta-impeller-kit-21951352-raw-water-pump-service-kit\"\u003eVolvo Penta Impeller Kit 21951352\u003c\/a\u003e – raw-water pump service kit\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/volvo-penta-raw-water-pump-impeller-puller-screw-3843949\"\u003eVolvo Penta Raw Water Pump Impeller Puller Screw 3843949\u003c\/a\u003e – impeller removal tool\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/sierra-marine-water-pump-kit-18-3217\"\u003eSierra Marine Water Pump Kit 18-3217\u003c\/a\u003e – related marine water pump kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eMatch this pump by the original part number rather than by the “Ford 351” or “GM” description alone. Marine engine manufacturers often use different accessory arrangements on otherwise similar base engines, so confirming \u003cstrong\u003eVolvo Penta 3860703\u003c\/strong\u003e or \u003cstrong\u003eSierra 18-3587-1\u003c\/strong\u003e is the safest fitment check.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51156140589092,"sku":"57-WP003","price":727.19,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/47de1bfa-e8c5-4421-aea6-cbcf8ec79370.png?v=1785206451","url":"https:\/\/marisolmarine.com\/products\/arco-wp003-volvo-penta-replacement-water-pump","provider":"Marisol Marine Company","version":"1.0","type":"link"}