{"product_id":"johnson-pump-09-1027b-10-impeller-volvo-penta-f5b-9","title":"Johnson Pump 09-1027B-10 Impeller | Volvo Penta F5B-9 Raw Water Pump","description":"\u003ch2\u003eJohnson Pump 09-1027B-10 Impeller | Volvo Penta F5B-9 Raw Water Pump\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePart Numbers:\u003c\/strong\u003e 09-1027B-10  \/  189-091027B10\u003c\/p\u003e\n\u003cp\u003eThe Johnson Pump 09-1027B-10 is a 12-blade flexible raw-water pump impeller manufactured from Johnson’s MC97 compound, designed for selected Volvo Penta gasoline-engine raw-water cooling pumps. It is the correct service impeller for the Johnson Pump F5B-9 cooling pump used as the OEM replacement for Volvo Penta \u003cstrong\u003e21214596\u003c\/strong\u003e and related F5B-9 Volvo Penta pump configurations including \u003cstrong\u003e21214599\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eImpeller Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump family:\u003c\/strong\u003e Johnson Pump F5B-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e MC97 rubber compound\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of blades:\u003c\/strong\u003e 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside diameter:\u003c\/strong\u003e approx. 2.25 in. \/ 57.2 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cp\u003eDocumented for Johnson Pump F5B-9 cooling pumps used on selected Volvo Penta gasoline engines:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e4.3GL\u003c\/li\u003e\n\u003cli\u003e4.3GS\u003c\/li\u003e\n\u003cli\u003e4.3Gi\u003c\/li\u003e\n\u003cli\u003e5.0GL  \/  5.0GLP\u003c\/li\u003e\n\u003cli\u003e5.0Gi  \/  5.0GiP\u003c\/li\u003e\n\u003cli\u003e5.7GL\u003c\/li\u003e\n\u003cli\u003e5.7GS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eVolvo Penta gasoline engines may use different raw-water pumps depending on engine model, production period, pulley configuration, and cooling-system arrangement. \u003cstrong\u003eAlways confirm the engine model and existing pump or impeller number\u003c\/strong\u003e before ordering rather than matching by engine displacement alone.\u003c\/p\u003e\n\n\u003ch3\u003eOEM \u0026amp; Cross-Reference Part Numbers\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eJohnson Pump: \u003cstrong\u003e09-1027B-10\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDistribution SKU: \u003cstrong\u003e189-091027B10\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eVolvo Penta pump reference: \u003cstrong\u003e21214596\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eVolvo Penta pump reference: \u003cstrong\u003e21214599\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRelated single-kit impeller: \u003ca href=\"\/products\/11110179668004\"\u003e09-1027B-1 \/ 189-091027B1\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eService Interval\u003c\/h3\u003e\n\u003cp\u003eJohnson Pump recommends replacing the raw-water impeller as preventive maintenance rather than waiting for the impeller to fail. Annual replacement at layup or spring commissioning is standard practice on most marine gasoline engines. Never run the raw-water pump dry — even a brief dry-run can cause permanent blade damage.\u003c\/p\u003e\n\n\u003ch3\u003eWhen to Replace the Impeller\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlades are cracked, hardened, permanently bent, or missing tips\u003c\/li\u003e\n\u003cli\u003eRaw-water flow is reduced or intermittent\u003c\/li\u003e\n\u003cli\u003eEngine is running warmer than normal\u003c\/li\u003e\n\u003cli\u003eImpeller service history is unknown\u003c\/li\u003e\n\u003cli\u003eAnnual maintenance is due\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRemove the pump cover and extract the old impeller fully before inspecting for blade damage\u003c\/li\u003e\n\u003cli\u003eIf any blades are missing, inspect all downstream cooling hoses and passages for rubber fragments before installing the replacement — missed pieces are a common cause of continued overheating\u003c\/li\u003e\n\u003cli\u003eLubricate the new impeller with water-safe impeller lubricant before installation\u003c\/li\u003e\n\u003cli\u003eRotate the pump shaft in its normal operating direction while seating the impeller\u003c\/li\u003e\n\u003cli\u003eReplace the pump cover gasket if worn or damaged\u003c\/li\u003e\n\u003cli\u003eVerify normal raw-water flow immediately after startup\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/11110179668004\"\u003eJohnson Pump F5B Impeller Kit 09-1027B-1 | Replaces Jabsco 1210-0001\u003c\/a\u003e (standard F5B single-kit reference)\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131455090724\"\u003eJohnson Pump 09-1027B-10 Impeller Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/11110180552740\"\u003eARCO IP002 Volvo Penta Raw Water Pump Impeller | Replaces 21951346 \/ 3862281\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/11110179635236\"\u003eJohnson Pump F4B Impeller Kit 09-1026B-1 | Replaces Jabsco 673-0001\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131384213540\"\u003eJohnson Pump 09-812B-1 Impeller Kit (F6)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131455123492\"\u003eJohnson Pump 09-1028BT-1 Impeller Kit (F7)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/11110179799076\"\u003eJohnson Pump 09-45587 Service Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/11110184550436\"\u003eSeachoice 17781 Impeller Puller\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131504209956\"\u003eVolvo Penta Raw Water Cooling Hose 3862901\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131483107364\"\u003eVolvo Penta Seawater Pump Screw Kit 22125080\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eThe 09-1027B-10 is the Volvo Penta application-specific impeller for the Johnson Pump F5B-9 fitted to the 4.3L, 5.0L, and 5.7L gasoline engine families. It comes up most often during spring commissioning, annual service, and post-overheat inspections on Volvo Penta-powered sterndrive and inboard vessels. The Volvo Penta OEM pump references (21214596 and 21214599) are useful for confirming the correct pump variant is installed before ordering the impeller.\u003c\/p\u003e\n\u003cp\u003eThe most common issue is ordering by engine displacement without confirming the actual pump fitted. Several Volvo Penta gasoline engines of similar displacement use different raw-water pump configurations with different impellers — matching the pump number or existing impeller number is always more reliable than matching the engine size alone. Also note that 09-1027B-10 is an application-specific impeller, while the closely related \u003ca href=\"\/products\/11110179668004\"\u003e09-1027B-1\u003c\/a\u003e is the standard single-kit F5B reference — confirm which is required for your pump configuration before ordering.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51156139442212,"sku":"189-091027B10","price":105.49,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/f8a29523-4f3d-478b-a663-a268b70b3269.png?v=1788821161","url":"https:\/\/marisolmarine.com\/products\/johnson-pump-09-1027b-10-impeller-volvo-penta-f5b-9","provider":"Marisol Marine Company","version":"1.0","type":"link"}