{"product_id":"johnson-pump-f6b-9-bronze-raw-water-pump-10-24946-01","title":"Johnson Pump F6B-9 Bronze Raw-Water Pump 10-24946-01 | Crankshaft-Driven | GM Marine","description":"\u003ch2\u003eJohnson Pump F6B-9 Bronze Raw-Water Pump — 10-24946-01\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 10-24946-01 (Johnson Pump)  |  \u003cstrong\u003eSeries:\u003c\/strong\u003e F6B-9  |  \u003cstrong\u003eBrand:\u003c\/strong\u003e Johnson Pump \/ SPX Flow\u003c\/p\u003e\n\u003cp\u003eJohnson Pump \u003cstrong\u003e10-24946-01\u003c\/strong\u003e (F6B-9) is a crankshaft-driven bronze flexible-impeller raw-water pump for selected GM-based marine gasoline engine cooling systems. It features a \u003cstrong\u003ebronze pump body, stainless-steel shaft, flange mounting, and vertical 1-1\/4 in. ports\u003c\/strong\u003e, and is designed to restore full raw-water flow through the engine cooling circuit when the original pump is worn, leaking, or damaged.\u003c\/p\u003e\n\u003cp\u003eThe F6B-9 series is designed for approximately \u003cstrong\u003e15% greater flow\u003c\/strong\u003e compared to the earlier F6B configuration. The replacement impeller for this pump is \u003ca href=\"\/products\/8131384213540\"\u003eJohnson Pump 09-812B-1\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 10-24946-01\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog \/ SKU Reference:\u003c\/strong\u003e 10249601 \/ 189-10249601\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Johnson Pump \/ SPX Flow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e F6B-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Crankshaft-Driven Bronze Flexible-Impeller Raw-Water Pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump Body:\u003c\/strong\u003e Bronze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft:\u003c\/strong\u003e Stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Flange-mounted\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort Orientation:\u003c\/strong\u003e Vertical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort Size:\u003c\/strong\u003e 1-1\/4 in. (31.8 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement Impeller:\u003c\/strong\u003e 09-812B-1 \/ 09812B1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Marine engine raw-water (seawater) cooling circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2,028 g \/ approx. 4.5 lb\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cp\u003eFitment is confirmed by the existing pump number and mounting configuration — not by engine displacement or brand alone. GM-based marine engines can use several crankshaft-driven seawater pumps that appear similar but differ in port size, flange pattern, shaft arrangement, and impeller specification. Documented applications include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta GM-based gasoline marine engines\u003c\/li\u003e\n\u003cli\u003eIndmar marine engines\u003c\/li\u003e\n\u003cli\u003eMarine Power engines\u003c\/li\u003e\n\u003cli\u003ePCM \/ Pleasurecraft Marine engines\u003c\/li\u003e\n\u003cli\u003eSelected small-block and big-block GM marine engine installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBroader catalog references also associate the F6B-9 pump family with selected Ford and Alaska Diesel installations. Confirm by the original pump number and mounting layout before ordering.\u003c\/p\u003e\n\n\u003ch2\u003eFitment Notice\u003c\/h2\u003e\n\u003cp\u003eBefore ordering, confirm all of the following for your application:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExisting pump is stamped or listed as \u003cstrong\u003eF6B-9\u003c\/strong\u003e or cross-references \u003cstrong\u003e10-24946-01 \/ 10249601\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePort size is \u003cstrong\u003e1-1\/4 in. (31.8 mm)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMounting is \u003cstrong\u003ecrankshaft-driven, flange-style\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePort orientation is \u003cstrong\u003evertical\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eReplacement impeller required is \u003cstrong\u003e09-812B-1 \/ 09812B1\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo not select this pump by engine displacement alone. Several Johnson Pump F-series models share a similar appearance but are not interchangeable.\u003c\/p\u003e\n\n\u003ch2\u003eWhen to Replace the Pump\u003c\/h2\u003e\n\u003cp\u003eReplace the complete raw-water pump when any of the following are observed:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWater leaks from the pump shaft seal or pump body\u003c\/li\u003e\n\u003cli\u003eShaft or bearing play is present, or the bearing is noisy\u003c\/li\u003e\n\u003cli\u003eBronze housing is scored, badly worn, or damaged\u003c\/li\u003e\n\u003cli\u003eRaw-water flow remains weak after a fresh impeller is installed\u003c\/li\u003e\n\u003cli\u003eRepeated impeller failures suggest internal housing wear or roughness\u003c\/li\u003e\n\u003cli\u003eCorrosion or mechanical damage affects the pump flanges or sealing surfaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect the crankshaft drive surface, pump flange, hoses, clamps, and surrounding cooling components before installation\u003c\/li\u003e\n\u003cli\u003eConfirm the pump is correctly aligned with the engine crankshaft drive before securing the flange\u003c\/li\u003e\n\u003cli\u003eConnect the \u003cstrong\u003e1-1\/4 in. (31.8 mm)\u003c\/strong\u003e inlet and outlet hoses and secure all clamps\u003c\/li\u003e\n\u003cli\u003eInstall a fresh \u003ca href=\"\/products\/8131384213540\"\u003e09-812B-1 impeller\u003c\/a\u003e if not supplied with the pump, following the impeller installation procedure for the F6B series\u003c\/li\u003e\n\u003cli\u003eVerify free pump rotation by hand before starting the engine\u003c\/li\u003e\n\u003cli\u003eIf the previous impeller lost blade material, inspect all downstream passages — oil coolers, heat exchangers, thermostat housings, and hoses — before startup\u003c\/li\u003e\n\u003cli\u003eRun the engine and confirm strong raw-water discharge, correct engine temperature, and no leaks at the pump body, cover plate, or hose connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCross-Reference Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eJohnson Pump:\u003c\/strong\u003e 10-24946-01\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso listed as:\u003c\/strong\u003e 10249601 \/ 189-10249601 \/ 189-102494601\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump Series:\u003c\/strong\u003e F6B-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement Impeller:\u003c\/strong\u003e 09-812B-1 \/ 09812B1\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\/8131384213540\"\u003eJohnson Pump 09-812B-1 Impeller Kit (F6)\u003c\/a\u003e — correct replacement impeller for the F6B-9 pump\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/11110182322212\"\u003eJohnson Pump 09812BT1 Kit: F6 Impeller w\/Thread MC97\u003c\/a\u003e — F6 impeller kit with thread insert for specific installations\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/11110179799076\"\u003eJohnson Pump 09-45587 Service Kit\u003c\/a\u003e — F6 series service kit\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/11110179766308\"\u003eJohnson Pump 09-45585 Service Kit For F5B-8\/8007\u003c\/a\u003e — related F5B service kit for reference\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/11110180716580\"\u003eARCO WP003 Volvo Penta \/ Indmar Ford 351 Replacement Water Pump\u003c\/a\u003e — complete pump alternative for applicable Volvo Penta \/ Indmar installations\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/11110180683812\"\u003eARCO WP002 Volvo Penta \/ Indmar Ford 302 Replacement Water Pump\u003c\/a\u003e — related ARCO pump for Ford 302 \/ Volvo Penta applications\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 The F6B-9 is the right pump when a Volvo Penta GM-based, Indmar, Marine Power, or PCM engine has a failed or leaking crankshaft-driven seawater pump and the original pump cross-references \u003cstrong\u003e10-24946-01\u003c\/strong\u003e. It’s a complete bronze assembly — not a rebuild — so you’re starting fresh with a new housing, shaft, and seals rather than hoping the old housing is still serviceable. The 15% flow improvement over the earlier F6B version is a meaningful gain if the cooling system was running warm before the pump failed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCommon issues:\u003c\/strong\u003e The most common ordering mistake is confusing the F6B-9 with other F-series pumps that look nearly identical. The \u003cstrong\u003e1-1\/4 in. port size and vertical port orientation\u003c\/strong\u003e are the key identifiers — if the original pump has smaller ports or horizontal orientation, it’s a different model. Always confirm against the existing pump number or your engine’s parts diagram. The second issue is neglecting to inspect the pump housing bore when replacing just the impeller on a high-hour pump: if the bore is scored or oval, new impellers will fail prematurely regardless of quality. When in doubt on a high-hour engine, replace the complete pump at the same time as the impeller.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51156140097572,"sku":"189-102494601","price":460.69,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/189-102491501.jpg?v=1784926829","url":"https:\/\/marisolmarine.com\/products\/johnson-pump-f6b-9-bronze-raw-water-pump-10-24946-01","provider":"Marisol Marine Company","version":"1.0","type":"link"}