{"product_id":"johnson-pump-09-46840-service-kit-f35b-8-802-8007","title":"Johnson Pump 09-46840 Service Kit F35B-8\/802\/8007","description":"\u003cp class=\"nvn-hero\"\u003eThe Johnson Pump 09-46840 is the factory service kit for F35B-8, F35B-802, F35B-8007 and F35B-8027 flexible impeller raw-water pumps. One box gives you a genuine impeller, the mechanical shaft seal, gasket, O-ring and end cover screw, so you can rebuild your engine's cooling pump and get back on the water.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eIf your Johnson Pump raw-water pump has started weeping at the shaft, or the flow feels weak at the helm, this is the kit that brings it back to life. The 09-46840 is the factory service kit for the F35B-8, F35B-802, F35B-8007 and F35B-8027 flexible impeller pumps. One box, every wear part you touch during a normal rebuild, so you're not chasing individual pieces across three catalogs the weekend you actually need them.\u003c\/p\u003e\n\u003cp\u003eHere's what's inside. A genuine Johnson flexible impeller (09-808B-1), the mechanical shaft seal (09-0.2247.021), the end cover gasket, the O-ring (0.2173.440), and the end cover screw (0.0279.300). That's the full set of soft parts and fasteners that see wear on a normal service. The impeller vanes lose their spring over time, the seal starts to weep, and the gasket and O-ring harden and shrink. Replace them together and the pump pulls a strong, steady prime again.\u003c\/p\u003e\n\u003cp\u003eThis is the mechanical-seal version of the F35B service kit, and that distinction matters. Some F35B pumps were built with a lip-seal arrangement instead, and the parts don't cross over, so check what your pump runs before you order. If yours uses a mechanical seal, this is the right box. Not sure? Pull the end cover and look, or read the model stamp on the pump body and match it against the four series numbers above.\u003c\/p\u003e\n\u003cp\u003eA raw-water pump is the heart of your engine's cooling, and a fresh kit is cheap insurance against an overheat. Most boaters we talk to rebuild theirs every couple of seasons, sooner if they run in brackish or silty water. Impeller life takes a real hit in salt and brackish conditions. A set of vanes that looked fine when you winterized can crack on the first hot afternoon in July. If you trailer between different bodies of water, or the boat's been sitting all winter, a pre-season rebuild is time well spent.\u003c\/p\u003e\n\u003cp\u003eHow do you know it's time? Watch for a weak or dropping water stream at the exhaust, a temperature gauge that climbs higher than it used to, or a wet spot under the pump from a seal that's started to weep. Pull the end cover and inspect the impeller. Cracked vane roots, a flat spot where it's taken a set, or missing tips all mean it's done. If you find rubber bits downstream, check and clear the cooling passages while you're in there.\u003c\/p\u003e\n\u003cp\u003eA few notes from folks who've done plenty of these. Grease the O-ring lightly before it goes in. A dry O-ring is the number one cause of a first-season weep on these pumps. Go easy on the end cover screw, because the threads strip if you lean on them, so torque to spec or add a dab of blue thread locker and snug it evenly. When you drop the new impeller in, make sure the shaft key is seated and lined up before you close it up, or the impeller can bind on startup. And always replace the O-ring and gasket together. Reusing one while swapping the other is a classic way to pull air on the suction side and lose your prime.\u003c\/p\u003e\n\u003cp\u003eOne rule above all. Never run the pump dry, even for a few seconds. A flexible impeller relies on water for lubrication and cooling, and a dry run will shred the vanes before you've cleared the slip. This kit covers the standard wear items on a service. If the shaft bearing feels rough or notchy when you spin it, that's a bigger job than a wear-parts refresh, so plan accordingly.\u003c\/p\u003e\n\u003cp\u003eThis is a genuine Johnson Pump kit, not a mixed bag of aftermarket pieces. Buy it once, do the job right, and keep a spare aboard. When the pump finally tells you it's time, usually on a Saturday, miles from the ramp, you'll be glad it's in the ditch bag instead of on a shelf back home.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003eGenuine Johnson flexible impeller (09-808B-1) restores full raw-water flow and a strong prime\u003c\/li\u003e\n  \u003cli\u003eMechanical shaft seal (09-0.2247.021) stops shaft weepage and keeps water out of the drive end\u003c\/li\u003e\n  \u003cli\u003eEnd cover gasket and O-ring (0.2173.440) reseal the housing so the pump won't pull air on the suction side\u003c\/li\u003e\n  \u003cli\u003eFresh end cover screw (0.0279.300) replaces the fastener that strips most often on these pumps\u003c\/li\u003e\n  \u003cli\u003eFits Johnson F35B-8, F35B-802, F35B-8007 and F35B-8027 flexible impeller pumps\u003c\/li\u003e\n  \u003cli\u003eComplete wear-parts set in one box, no cross-referencing individual part numbers\u003c\/li\u003e\n  \u003cli\u003eMechanical-seal configuration, matched to F35B pumps built with a mechanical seal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Johnson Pump reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhich pumps does the 09-46840 kit fit?\u003c\/summary\u003e\n    \u003cp\u003eIt's the service kit for Johnson Pump F35B-8, F35B-802, F35B-8007 and F35B-8027 flexible impeller pumps. Check the model stamp on your pump body against those numbers before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat's included in the kit?\u003c\/summary\u003e\n    \u003cp\u003eA genuine Johnson flexible impeller (09-808B-1), the mechanical shaft seal (09-0.2247.021), the end cover gasket, the O-ring (0.2173.440), and the end cover screw (0.0279.300). That's the full set of wear parts for a normal service.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this the mechanical seal or the lip seal version?\u003c\/summary\u003e\n    \u003cp\u003eThis is the mechanical-seal version. Some F35B pumps were built with a lip-seal arrangement instead, and the parts don't interchange, so confirm which seal your pump uses before you order.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes the kit include an impeller?\u003c\/summary\u003e\n    \u003cp\u003eYes. It comes with a genuine Johnson 09-808B-1 flexible impeller, so you don't have to buy one separately.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow often should I rebuild my raw-water pump?\u003c\/summary\u003e\n    \u003cp\u003eMost boaters service theirs every couple of seasons, and sooner if they run in brackish or silty water where impeller life is shorter. A pre-season rebuild is cheap insurance against an overheat.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eShould I grease the O-ring during install?\u003c\/summary\u003e\n    \u003cp\u003eYes, lightly. A dry O-ring is the most common cause of a first-season weep on these pumps. A thin film of grease helps it seat and seal.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I keep from stripping the end cover screw?\u003c\/summary\u003e\n    \u003cp\u003eGo easy and torque it to spec, or add a dab of blue thread locker and snug it down evenly. The threads strip if you over-tighten, which is why the kit includes a fresh screw.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need to replace both the O-ring and the gasket?\u003c\/summary\u003e\n    \u003cp\u003eYes, replace them together. Reusing one while swapping the other is a common way to pull air on the suction side and lose your prime.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I run the pump dry to test it?\u003c\/summary\u003e\n    \u003cp\u003eNo. A flexible impeller needs water for lubrication and cooling, and even a few seconds dry can shred the vanes. Always confirm water flow before running the engine.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes this kit include the shaft bearing?\u003c\/summary\u003e\n    \u003cp\u003eNo, it covers the standard wear parts: impeller, seal, gasket, O-ring and end cover screw. If the shaft bearing feels rough when you spin it, that's a separate repair.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eService Kit For F35B-8\/ F35B-802\/ F35B-8027 Series Johnson Pump; With Impeller (09-808B-1)\/ Seal (09-0.2247.021)\/ Gasket\/ O-Ring (0.2173.440)\/ End Cover Screw (0.0279.300)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eJohnson Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e09-46840\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e7330717004125\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eImpeller Part Number\u003c\/th\u003e\n\u003ctd\u003e09-808B-1\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSeal Part Number\u003c\/th\u003e\n\u003ctd\u003e09-0.2247.021\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eO-Ring Part Number\u003c\/th\u003e\n\u003ctd\u003e0.2173.440\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eEnd Cover Screw Part Number\u003c\/th\u003e\n\u003ctd\u003e0.0279.300\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eGasket\u003c\/th\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eSeal Type\u003c\/th\u003e\n\u003ctd\u003eMechanical seal\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eKit Contents\u003c\/th\u003e\n\u003ctd\u003eImpeller, mechanical seal, gasket, O-ring, end cover screw\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCompatible Pump Series\u003c\/th\u003e\n\u003ctd\u003eF35B-8 \/ F35B-802 \/ F35B-8007 \/ F35B-8027\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eKit Type\u003c\/th\u003e\n\u003ctd\u003eRaw-water pump service kit\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Which pumps does the 09-46840 kit fit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's the service kit for Johnson Pump F35B-8, F35B-802, F35B-8007 and F35B-8027 flexible impeller pumps. Check the model stamp on your pump body against those numbers before ordering.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What's included in the kit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A genuine Johnson flexible impeller (09-808B-1), the mechanical shaft seal (09-0.2247.021), the end cover gasket, the O-ring (0.2173.440), and the end cover screw (0.0279.300). That's the full set of wear parts for a normal service.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this the mechanical seal or the lip seal version?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"This is the mechanical-seal version. Some F35B pumps were built with a lip-seal arrangement instead, and the parts don't interchange, so confirm which seal your pump uses before you order.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does the kit include an impeller?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. It comes with a genuine Johnson 09-808B-1 flexible impeller, so you don't have to buy one separately.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How often should I rebuild my raw-water pump?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Most boaters service theirs every couple of seasons, and sooner if they run in brackish or silty water where impeller life is shorter. A pre-season rebuild is cheap insurance against an overheat.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Should I grease the O-ring during install?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes, lightly. A dry O-ring is the most common cause of a first-season weep on these pumps. A thin film of grease helps it seat and seal.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How do I keep from stripping the end cover screw?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Go easy and torque it to spec, or add a dab of blue thread locker and snug it down evenly. The threads strip if you over-tighten, which is why the kit includes a fresh screw.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do I need to replace both the O-ring and the gasket?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes, replace them together. Reusing one while swapping the other is a common way to pull air on the suction side and lose your prime.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I run the pump dry to test it?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. A flexible impeller needs water for lubrication and cooling, and even a few seconds dry can shred the vanes. Always confirm water flow before running the engine.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does this kit include the shaft bearing?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No, it covers the standard wear parts: impeller, seal, gasket, O-ring and end cover screw. If the shaft bearing feels rough when you spin it, that's a separate repair.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Johnson Pump","offers":[{"title":"Default Title","offer_id":45073691770973,"sku":"2009434","price":38.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_f13163d9-ae46-414c-acd0-f1574c03d8c7.jpg?v=1789780090","url":"https:\/\/nvnmarine.com\/products\/johnson-pump-09-46840-service-kit-f35b-8-802-8007","provider":"NVN Marine","version":"1.0","type":"link"}