{"product_id":"yanmar-impeller-kit-128990-42570","title":"Yanmar Seawater Pump Impeller Kit 128990-42570","description":"\u003cp\u003eThe \u003cstrong\u003eYanmar 128990-42570 Seawater Pump Impeller Kit\u003c\/strong\u003e is a genuine Yanmar cooling-pump service kit used on select GM and YM series marine diesel engines. It is designed to restore proper seawater circulation through the raw-water cooling system, helping protect the engine from overheating caused by worn, cracked, or damaged impeller vanes. Current Yanmar parts references show this kit replacing earlier impeller number \u003cstrong\u003e128990-42200\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eGenuine Yanmar seawater pump impeller service kit.\u003c\/li\u003e\n\u003cli\u003eUsed for marine diesel raw-water cooling pump maintenance.\u003c\/li\u003e\n\u003cli\u003eKit references include \u003cstrong\u003eimpeller, cover O-ring, cover screws, and lubricant\/grease\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eHelps restore cooling-water flow and reduce overheating risk.\u003c\/li\u003e\n\u003cli\u003eCurrent technical references list the impeller as \u003cstrong\u003e50 mm outer diameter x 22 mm width\u003c\/strong\u003e, with \u003cstrong\u003e12 mm inner diameter\u003c\/strong\u003e, \u003cstrong\u003e6 blades\u003c\/strong\u003e, neoprene vanes, and brass hub.\u003c\/li\u003e\n\u003cli\u003eDirect replacement reference for \u003cstrong\u003eYanmar 128990-42200\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis kit is commonly listed for select Yanmar marine diesel applications, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2GM20\u003c\/strong\u003e — serial numbers beginning with \u003cstrong\u003eE\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2GM20F\u003c\/strong\u003e — serial numbers beginning with \u003cstrong\u003eE\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3GM30\u003c\/strong\u003e — serial numbers beginning with \u003cstrong\u003eE\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3GM30F\u003c\/strong\u003e — serial numbers beginning with \u003cstrong\u003eE\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e2YM15\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3YM20\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3YM30\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e3YM30AE\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional references also associate this kit with later GM-YEU and YM-series seawater pump applications, so the engine model and seawater pump assembly should be verified before ordering.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eImpeller fitment should be confirmed using the engine model, serial number, seawater pump part number, or Yanmar parts diagram. GM-series engines in particular may vary by production range, and references commonly specify \u003cstrong\u003eserial numbers beginning with “E”\u003c\/strong\u003e for 2GM20 \/ 2GM20F \/ 3GM30 \/ 3GM30F applications.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace the impeller when raw-water flow is weak, the engine runs hotter than normal, the pump has been run dry, or the old impeller has cracked, stiff, missing, or permanently bent vanes. It is also smart to replace the impeller during seasonal service or whenever the seawater pump cover is already being opened for inspection.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInstall with the seawater pump cover removed. Replace the O-ring and cover screws supplied with the kit, apply the included lubricant\/grease to the impeller, and confirm the vanes are folded in the correct direction for pump rotation. After startup, check immediately for leaks and verify strong cooling-water discharge. Never run the seawater pump dry.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate\/Superseded Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e128990-42570\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eYM-128990-42570\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e128990-42200\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eYM-128990-42200\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eX08810B\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThis is a small service kit, but it protects one of the most important systems on the engine. The safest match is always the engine serial number or seawater pump assembly, especially on GM-series engines where production range matters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShipping:\u003c\/strong\u003e Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"YAN","offers":[{"title":"Default Title","offer_id":43564304138276,"sku":"128990-42570","price":26.83,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/af8df94b-3974-42a3-b1ca-0621f23d75ed.png?v=1777957049","url":"https:\/\/marisolmarine.com\/products\/yanmar-impeller-kit-128990-42570","provider":"Marisol Marine Company","version":"1.0","type":"link"}