{"product_id":"johnson-pump-f5b-impeller-kit-09-1027b-1","title":"Johnson Pump F5B Impeller Kit 09-1027B-1 | Replaces Jabsco 1210-0001","description":"\u003ch2\u003eJohnson Pump F5B Impeller Kit 09-1027B-1\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e 09-1027B-1 (also shown as 091027B1)\u003c\/p\u003e\n\u003cp\u003eThe Johnson Pump 09-1027B-1 is a genuine F5 \/ F5B flexible impeller kit for marine engine raw-water cooling pumps. It uses Johnson’s MC97 \/ EPDM cooling-water compound in a 12-blade, splined-drive configuration and directly replaces \u003ca href=\"\/products\/11110181044260\"\u003eJabsco 1210-0001\u003c\/a\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 F5 \/ F5B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e MC97 \/ EPDM cooling-water compound\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of blades:\u003c\/strong\u003e 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrive type:\u003c\/strong\u003e Splined hub\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside diameter:\u003c\/strong\u003e 2.25 in. \/ 57.1 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 1.24 in. \/ 31.5 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cp\u003eJohnson identifies 09-1027B-1 for F5 and F5B pump assemblies. OEM cross-references associate this kit with cooling systems on engines from:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta — including 3.0L, 4.3L, 5.0L, 5.7L, 7.4L, and 8.2L gasoline-engine families where an F5B pump is fitted\u003c\/li\u003e\n\u003cli\u003ePerkins\u003c\/li\u003e\n\u003cli\u003eOnan\u003c\/li\u003e\n\u003cli\u003eYanmar\u003c\/li\u003e\n\u003cli\u003eWesterbeke \/ Universal\u003c\/li\u003e\n\u003cli\u003eVetus\u003c\/li\u003e\n\u003cli\u003eSole Diesel\u003c\/li\u003e\n\u003cli\u003eMase\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways confirm fitment by matching the existing pump model and impeller number. Do not select by engine brand or diameter alone.\u003c\/p\u003e\n\n\u003ch3\u003eFitment Notice\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExisting impeller number\u003c\/li\u003e\n\u003cli\u003ePump manufacturer, model, and F5 \/ F5B designation\u003c\/li\u003e\n\u003cli\u003e12-blade configuration\u003c\/li\u003e\n\u003cli\u003eSplined drive hub\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 2.25 in. \/ 57.1 mm\u003c\/li\u003e\n\u003cli\u003eWidth: 1.24 in. \/ 31.5 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eJohnson makes other F5 impellers with the same basic diameter but different hub or material specifications. The full impeller number is the safest fitment reference.\u003c\/p\u003e\n\n\u003ch3\u003eOEM \u0026amp; Cross-Reference Part Numbers\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eJohnson Pump\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e09-1027B-1  \/  091027B1\u003c\/li\u003e\n\u003cli\u003e08-1027B-1  \/  08-1027BT  \/  09-1027BT (superseded references)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eJabsco\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/11110181044260\"\u003e1210-0001\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eVolvo Penta\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e825940  \/  860203  \/  875811  \/  21213660  \/  21951346\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOnan\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e131-0050  \/  132-0162\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePerkins\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e24880190  \/  460038\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eYanmar\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e129470-42530  \/  129670-42610\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWesterbeke \/ Universal\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e302571\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen to Replace the Impeller\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCooling-water flow becomes weak or intermittent\u003c\/li\u003e\n\u003cli\u003eVanes are cracked, torn, stiff, or permanently deformed\u003c\/li\u003e\n\u003cli\u003eMissing blade material is found — inspect all downstream cooling passages for fragments before reassembly\u003c\/li\u003e\n\u003cli\u003ePump has been run dry\u003c\/li\u003e\n\u003cli\u003eEngine has experienced overheating\u003c\/li\u003e\n\u003cli\u003eAnnual raw-water pump maintenance is due\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eShut off the raw-water intake before beginning work\u003c\/li\u003e\n\u003cli\u003eRemove the pump cover and extract the old impeller\u003c\/li\u003e\n\u003cli\u003eInspect the old impeller for missing vane pieces — locate all fragments before closing up\u003c\/li\u003e\n\u003cli\u003eInspect the cam, cover plate, and pump chamber for scoring or wear\u003c\/li\u003e\n\u003cli\u003eConfirm the splined hub engages the pump shaft correctly before seating the impeller\u003c\/li\u003e\n\u003cli\u003eLubricate the new impeller with approved water-safe impeller lubricant\u003c\/li\u003e\n\u003cli\u003eReplace applicable gasket or O-ring components\u003c\/li\u003e\n\u003cli\u003eRotate the pump shaft in its normal operating direction while seating the impeller\u003c\/li\u003e\n\u003cli\u003eVerify strong cooling-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\/11110181044260\"\u003eJabsco 1210-0001-P Neoprene Impeller Kit\u003c\/a\u003e (direct OEM cross-reference)\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131601760292\"\u003eJabsco Neoprene Impeller Kit 1210-0001-P – Flexible Raw Water Pump Service Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/11110181077028\"\u003eJabsco 1210-0003-P Nitrile Impeller Kit\u003c\/a\u003e\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\/11110179635236\"\u003eJohnson Pump F4B Impeller Kit 09-1026B-1\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\/8131455287332\"\u003eJohnson Pump 09-808B-1 Impeller Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131455254564\"\u003eJohnson Pump 09-806B-1 Impeller Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8131455221796\"\u003eJohnson Pump 09-801B Impeller\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\u003c\/ul\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eThe Johnson 09-1027B-1 is one of the most widely used F5B impellers in the market, covering a broad range of Volvo Penta gasoline engines (3.0L through 8.2L) as well as Westerbeke, Onan, Yanmar, and Perkins diesel applications where an F5B pump is fitted. The Jabsco 1210-0001 cross-reference is particularly useful when servicing older installations where a Johnson pump number isn’t readily available. The five Volvo Penta OEM references (825940, 860203, 875811, 21213660, 21951346) cover different model-year applications within this pump family.\u003c\/p\u003e\n\u003cp\u003eThe most common ordering issue is selecting an F5 impeller by outside diameter alone. Johnson produces multiple F5 variants with the same 2.25 in. diameter but different hub styles, blade counts, or material compounds. The 12-blade splined configuration of the 09-1027B-1 is the defining feature, and matching the full impeller number is the only reliable way to confirm the right kit. As always, check the old impeller for missing vane pieces before reinstalling the pump cover — fragments in the cooling circuit are a frequent cause of continued overheating even after a successful impeller replacement.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51156139409444,"sku":"189-091027B1","price":90.39,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/189-091027B10.jpg?v=1784926813","url":"https:\/\/marisolmarine.com\/products\/johnson-pump-f5b-impeller-kit-09-1027b-1","provider":"Marisol Marine Company","version":"1.0","type":"link"}