{"product_id":"water-pump-repair-kit-fits-johnson-evinrude-20-35-hp-replaces-393630-0393630","title":"Water Pump Repair Kit – Fits Johnson\/Evinrude 20-35 HP (Replaces 393630, 0393630)","description":"\u003cstyle\u003e\n  \/* Outer container allows horizontal scrolling (with iOS momentum) *\/\n  .ss-table-wrap { overflow-x:auto; -webkit-overflow-scrolling:touch; }\n\n  \/* Base table styles *\/\n  table.ss-table { width:100%; border-collapse:collapse; min-width:640px; }\n  table.ss-table th, table.ss-table td {\n    padding:10px 12px; border:1px solid #e5e7eb; text-align:left; vertical-align:top;\n  }\n\n  \/* Key: prevent wrapping, word breaks, and vertical text in headers *\/\n  table.ss-table th {\n    white-space:nowrap;       \/* Do not wrap *\/\n    word-break:normal;        \/* Don’t break words *\/\n    letter-spacing:normal;    \/* Prevent theme styles from stretching letters *\/\n    font-weight:600;\n    background:#f8fafc;\n  }\n\n  \/* Small screen optimization *\/\n  @media (max-width:480px){\n    table.ss-table th, table.ss-table td { padding:8px 10px; font-size:14px; }\n  }\n\u003c\/style\u003e\n\u003csection\u003e\n    \u003ch2\u003eProduct Details\u003c\/h2\u003e\n    \u003cp\u003eThis \u003cstrong\u003eWater Pump Repair Kit – Fits Johnson\/Evinrude 20-35 HP\u003c\/strong\u003e provides all necessary components to restore your outboard's cooling system. It is designed for Johnson and Evinrude 2-stroke, 20-35 HP outboard engines from 1980 and later models.\u003c\/p\u003e\n    \u003cp\u003eIt serves as a direct replacement for Johnson\/Evinrude part numbers 393630 and 0393630, and interchanges with Sierra 18-3382, GLM 12070, and Mallory 9-48211.\u003c\/p\u003e\n    \u003cul\u003e\n        \u003cli\u003eInstallation Method: Engine Mount\u003c\/li\u003e\n        \u003cli\u003eEnvironment: Marine Saltwater \u0026amp; Freshwater\u003c\/li\u003e\n        \u003cli\u003eKey Inclusions: Includes Pump Housing, Impeller, and Gaskets\u003c\/li\u003e\n    \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n    \u003ch2\u003ePart Number Matrix\u003c\/h2\u003e\n    \u003cp\u003eUse this matrix to confirm equivalent references across OEM and aftermarket.\u003c\/p\u003e\n    \u003cdiv class=\"ss-table-wrap\"\u003e\n        \u003ctable class=\"ss-table\" aria-label=\"Part Number Matrix\"\u003e\n            \u003cthead\u003e\n                \u003ctr\u003e\n                    \u003cth\u003eBrand\u003c\/th\u003e\n                    \u003cth\u003ePart Number\u003c\/th\u003e\n                \u003c\/tr\u003e\n            \u003c\/thead\u003e\n            \u003ctbody\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n                    \u003ctd\u003e393630 \/ 0393630\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eSierra\u003c\/td\u003e\n                    \u003ctd\u003e18-3382\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eGLM\u003c\/td\u003e\n                    \u003ctd\u003e12070\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eMallory\u003c\/td\u003e\n                    \u003ctd\u003e9-48211\u003c\/td\u003e\n                \u003c\/tr\u003e\n            \u003c\/tbody\u003e\n        \u003c\/table\u003e\n    \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n    \u003ch2\u003eEngine \u0026amp; Model Compatibility\u003c\/h2\u003e\n    \u003cp\u003eConfirm your engine model\/year in the table below.\u003c\/p\u003e\n    \u003cdiv class=\"ss-table-wrap\"\u003e\n        \u003ctable class=\"ss-table\" aria-label=\"Engine \u0026amp; Model Compatibility\"\u003e\n            \u003cthead\u003e\n                \u003ctr\u003e\n                    \u003cth\u003eBrand\u003c\/th\u003e\n                    \u003cth\u003eModel\u003c\/th\u003e\n                    \u003cth\u003eRated HP\u003c\/th\u003e\n                    \u003cth\u003eStroke\u003c\/th\u003e\n                    \u003cth\u003eYears\u003c\/th\u003e\n                    \u003cth\u003eOEM Part No.\u003c\/th\u003e\n                    \u003cth\u003eNotes\u003c\/th\u003e\n                \u003c\/tr\u003e\n            \u003c\/thead\u003e\n            \u003ctbody\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n                    \u003ctd\u003eOutboards\u003c\/td\u003e\n                    \u003ctd\u003e20\u003c\/td\u003e\n                    \u003ctd\u003e2-Stroke\u003c\/td\u003e\n                    \u003ctd\u003e1985 and later\u003c\/td\u003e\n                    \u003ctd\u003e393630\u003c\/td\u003e\n                    \u003ctd\u003e\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n                    \u003ctd\u003eOutboards\u003c\/td\u003e\n                    \u003ctd\u003e25\u003c\/td\u003e\n                    \u003ctd\u003e2-Stroke\u003c\/td\u003e\n                    \u003ctd\u003e1985 and later\u003c\/td\u003e\n                    \u003ctd\u003e393630\u003c\/td\u003e\n                    \u003ctd\u003e\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n                    \u003ctd\u003eCommercial\u003c\/td\u003e\n                    \u003ctd\u003e25\u003c\/td\u003e\n                    \u003ctd\u003e2-Stroke\u003c\/td\u003e\n                    \u003ctd\u003e1998–2001\u003c\/td\u003e\n                    \u003ctd\u003e393630\u003c\/td\u003e\n                    \u003ctd\u003e\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n                    \u003ctd\u003eOutboards (2 Cyl)\u003c\/td\u003e\n                    \u003ctd\u003e30\u003c\/td\u003e\n                    \u003ctd\u003e2-Stroke\u003c\/td\u003e\n                    \u003ctd\u003e1980–1982\u003c\/td\u003e\n                    \u003ctd\u003e393630\u003c\/td\u003e\n                    \u003ctd\u003e\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n                    \u003ctd\u003eOutboards (2 Cyl)\u003c\/td\u003e\n                    \u003ctd\u003e30\u003c\/td\u003e\n                    \u003ctd\u003e2-Stroke\u003c\/td\u003e\n                    \u003ctd\u003e1983 and later\u003c\/td\u003e\n                    \u003ctd\u003e393630\u003c\/td\u003e\n                    \u003ctd\u003e\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n                    \u003ctd\u003eOutboards (2 Cyl)\u003c\/td\u003e\n                    \u003ctd\u003e35\u003c\/td\u003e\n                    \u003ctd\u003e2-Stroke\u003c\/td\u003e\n                    \u003ctd\u003e1980–1982\u003c\/td\u003e\n                    \u003ctd\u003e393630\u003c\/td\u003e\n                    \u003ctd\u003e\u003c\/td\u003e\n                \u003c\/tr\u003e\n                \u003ctr\u003e\n                    \u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n                    \u003ctd\u003eOutboards (2 Cyl)\u003c\/td\u003e\n                    \u003ctd\u003e35\u003c\/td\u003e\n                    \u003ctd\u003e2-Stroke\u003c\/td\u003e\n                    \u003ctd\u003e1983 and later\u003c\/td\u003e\n                    \u003ctd\u003e393630\u003c\/td\u003e\n                    \u003ctd\u003e\u003c\/td\u003e\n                \u003c\/tr\u003e\n            \u003c\/tbody\u003e\n        \u003c\/table\u003e\n    \u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n    \u003ch2\u003eTechnical Specs\u003c\/h2\u003e\n    \u003cdl\u003e\n        \u003cdt\u003eProduct Type\u003c\/dt\u003e\n\u003cdd\u003eWater Pump Repair Kit with Housing\u003c\/dd\u003e\n        \u003cdt\u003eInstallation\u003c\/dt\u003e\n\u003cdd\u003eEngine Mount\u003c\/dd\u003e\n        \u003cdt\u003eFuel Type\u003c\/dt\u003e\n\u003cdd\u003eGasoline\u003c\/dd\u003e\n        \u003cdt\u003eHousing Material\u003c\/dt\u003e\n\u003cdd\u003eMetal with Brass Bushing\u003c\/dd\u003e\n        \u003cdt\u003eDimensions\u003c\/dt\u003e\n\u003cdd\u003e152.4 × 127 × 70.1 mm (6.02 × 4.02 × 2.13 inches)\u003c\/dd\u003e\n        \u003cdt\u003eWeight\u003c\/dt\u003e\n\u003cdd\u003e0.32 kg (11.2 oz)\u003c\/dd\u003e\n        \u003cdt\u003eMaximum Horsepower\u003c\/dt\u003e\n\u003cdd\u003e35 HP\u003c\/dd\u003e\n        \u003cdt\u003eEngine Type\u003c\/dt\u003e\n\u003cdd\u003e2-Stroke\u003c\/dd\u003e\n        \u003cdt\u003eOperating Mode\u003c\/dt\u003e\n\u003cdd\u003eElectric\u003c\/dd\u003e\n        \u003cdt\u003eWarranty\u003c\/dt\u003e\n\u003cdd\u003e30-Day Return Guarantee\u003c\/dd\u003e\n    \u003c\/dl\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n    \u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n    \u003cul\u003e\n        \u003cli\u003e1 x Neoprene Impeller (395289)\u003c\/li\u003e\n        \u003cli\u003e1 x Wear Plate (328755)\u003c\/li\u003e\n        \u003cli\u003e1 x Pump Housing (393632)\u003c\/li\u003e\n        \u003cli\u003e1 x Pump Cup (328751)\u003c\/li\u003e\n        \u003cli\u003e1 x Impeller Plate Gasket (325537)\u003c\/li\u003e\n        \u003cli\u003e1 x Grommet (302497)\u003c\/li\u003e\n        \u003cli\u003e1 x Impeller Key (330619\/344470\/777845)\u003c\/li\u003e\n        \u003cli\u003e1 x Rubber Seal (328753)\u003c\/li\u003e\n        \u003cli\u003e1 x Brass Bushing (328754)\u003c\/li\u003e\n        \u003cli\u003e1 x O-Ring for Brushing (301877)\u003c\/li\u003e\n        \u003cli\u003e1 x O-Ring (554545)\u003c\/li\u003e\n        \u003cli\u003e2 x O-Ring (311338)\u003c\/li\u003e\n        \u003cli\u003e\u003cspan style=\"color:#d0021b;\"\u003e6 x Stainless Steel Bolt with Washer (331979\/324960\/318452)\u003c\/span\u003e\u003c\/li\u003e\n    \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n    \u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n    \u003col\u003e\n        \u003cli\u003eDisconnect the battery and shift the outboard into neutral.\u003c\/li\u003e\n        \u003cli\u003eRemove the lower unit (gearcase) from the engine's midsection.\u003c\/li\u003e\n        \u003cli\u003eUnbolt and remove the old water pump housing to access the impeller and wear plate.\u003c\/li\u003e\n        \u003cli\u003eClean all mating surfaces thoroughly, removing any old gasket material or sealant.\u003c\/li\u003e\n        \u003cli\u003eInstall the new gasket, wear plate, impeller, and key from the kit. Ensure the impeller vanes are oriented correctly.\u003c\/li\u003e\n        \u003cli\u003eFit the new pump cup and housing, then tighten the bolts to the manufacturer's specified torque.\u003c\/li\u003e\n        \u003cli\u003eReinstall the lower unit, ensuring the driveshaft and water tube align correctly.\u003c\/li\u003e\n        \u003cli\u003eReconnect the battery, start the engine in water, and verify a steady stream of water from the tell-tale outlet.\u003c\/li\u003e\n    \u003c\/ol\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n    \u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eHow do I confirm this kit fits my engine?\u003c\/summary\u003e\n      \u003cp\u003eVerify your engine's model, HP, and year against the \"Engine \u0026amp; Model Compatibility\" table. Cross-reference your existing part number with those listed in the \"Part Number Matrix.\" If you are unsure, contact us with your engine details before ordering.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat are the signs of a failing water pump?\u003c\/summary\u003e\n      \u003cp\u003eCommon signs include a weak or intermittent water stream from the tell-tale outlet, engine overheating alarms, and reduced engine performance. Visible damage to the old impeller, like cracked or missing vanes, also indicates failure.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eHow often should the water pump impeller be replaced?\u003c\/summary\u003e\n      \u003cp\u003eAs a general maintenance guideline, inspect the impeller annually and replace it every 1-2 years or every 100-200 hours of operation, depending on usage conditions (e.g., saltwater vs. freshwater).\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat is the benefit of a kit with housing vs. just an impeller?\u003c\/summary\u003e\n      \u003cp\u003eA complete kit with housing is recommended if the original housing is scored, warped, or corroded. A damaged housing can reduce pumping efficiency and cause premature failure of the new impeller.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I reuse my old bolts and gaskets?\u003c\/summary\u003e\n      \u003cp\u003eIt is strongly recommended to use all new gaskets, o-rings, and bolts included in the kit. Reusing old components can lead to leaks and improper sealing, compromising the repair.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eWhat material is the impeller made of?\u003c\/summary\u003e\n      \u003cp\u003eThe impeller is made from a durable CR-Neoprene compound, formulated for longevity and performance in marine environments.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eOEM vs. Aftermarket?\u003c\/summary\u003e\n      \u003cp\u003eThis listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eShipping speed \u0026amp; cost\u003c\/summary\u003e\n      \u003cp\u003eWe ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.\u003c\/p\u003e\n    \u003c\/details\u003e\n    \u003cdetails\u003e\n      \u003csummary\u003eWarranty \u0026amp; returns\u003c\/summary\u003e\n      \u003cp\u003eCovered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused \u0026amp; in original condition). See our policy page or reach out for instructions.\u003c\/p\u003e\n    \u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n    \u003ch2\u003eSafety \u0026amp; Important Info\u003c\/h2\u003e\n    \u003cul\u003e\n        \u003cli\u003eVerify images\/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.\u003c\/li\u003e\n        \u003cli\u003eThis is an aftermarket replacement, not an OEM component.\u003c\/li\u003e\n        \u003cli\u003eProfessional installation is recommended for safety and performance.\u003c\/li\u003e\n    \u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection\u003e\n    \u003ch2\u003eAbout Sea Sierra\u003c\/h2\u003e\n    \u003cul\u003e\n        \u003cli\u003ePro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.\u003c\/li\u003e\n        \u003cli\u003eFast Global Fulfillment — Free standard delivery to most regions in 5–15 days.\u003c\/li\u003e\n        \u003cli\u003eManufacturer-Direct Value — Fair pricing without compromising on materials or QC.\u003c\/li\u003e\n    \u003c\/ul\u003e\n\u003c\/section\u003e","brand":"SeaSierra","offers":[{"title":"Default Title","offer_id":50723793633595,"sku":"QM-393630","price":19.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/8673\/8747\/files\/QM-393630.png?v=1763031932","url":"https:\/\/seasierra.com\/products\/water-pump-repair-kit-fits-johnson-evinrude-20-35-hp-replaces-393630-0393630","provider":"SeaSierra","version":"1.0","type":"link"}