{"product_id":"volvo-penta-water-pump-impeller-kit-pn-21700445-v8-oem-12-blade-5-8-spline-2-1-4-od","title":"Volvo Penta Water Pump Impeller Kit PN 21700445 — V8 OEM 12-Blade 5\/8\" Spline (2-1\/4\" OD)","description":"\u003cp\u003e\u003cstrong\u003eThe Volvo Penta OEM Water Pump Impeller Kit (PN 21700445) is a direct-fit replacement impeller assembly designed to restore raw-water cooling performance on compatible V8 marine engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis genuine Volvo Penta impeller kit is manufactured to match original equipment dimensions and materials so your cooling system circulates seawater efficiently and reliably. It is intended as a replacement part for specific V8 sterndrive and inboard models, delivering the correct spline, blade count, and overall size for straightforward installation and dependable service life when maintained per manufacturer guidance.\u003c\/p\u003e\n\n\u003ch3\u003eWhich engines and models does this impeller kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis kit is compatible with a range of Volvo Penta V8 engine variants commonly used in sterndrives and some inboard installations. Before ordering, verify your engine model and part number to ensure compatibility with PN 21700445.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits many V8 350 and 380 series variants and selected V8 430 models\u003c\/li\u003e\n  \u003cli\u003eDesigned for engines listed under Volvo Penta fitment for impeller PN 21700445\u003c\/li\u003e\n  \u003cli\u003eCheck engine stamping or service manual to confirm exact match\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the technical specifications and mounting details?\u003c\/h3\u003e\n\u003cp\u003eThe impeller features a 5\/8\" spline drive and a dense 12-blade rubber design for consistent flow. Its outside diameter and width are manufactured to OEM tolerances so it seats correctly in the pump housing and mates to the stock shaft and drive.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e5\/8 inch spline drive, compatible with standard Volvo Penta pump shafts\u003c\/li\u003e\n  \u003cli\u003e12 flexible rubber blades for steady water flow and quieter operation\u003c\/li\u003e\n  \u003cli\u003e2-1\/4 inch outside diameter with 1-7\/8 inch face width to match OEM pump chambers\u003c\/li\u003e\n  \u003cli\u003eUse Volvo impeller puller tool 3843948 for safe removal\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I install and maintain this impeller for best performance?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for technicians familiar with marine cooling systems, but always follow Volvo Penta service instructions. Replace the impeller at regular intervals or at the first sign of blade wear, cracking, or deformation to avoid cooling failure.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInspect pump housing and shaft for wear before fitting a new impeller\u003c\/li\u003e\n  \u003cli\u003eLubricate the impeller hub slightly and rotate when seating to align blades\u003c\/li\u003e\n  \u003cli\u003eUse the Volvo impeller puller 3843948 for removal to prevent damage\u003c\/li\u003e\n  \u003cli\u003eKeep a spare impeller aboard as a routine preventative measure\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Marine owners and technicians who operate or service Volvo Penta V8-powered boats and need an OEM-quality replacement impeller will find PN 21700445 useful. It suits boaters who prefer factory-spec parts to maintain cooling system integrity, avoid fitment issues, and ensure predictable service intervals. If your engine model is listed among the compatible V8 series, this kit restores correct pump geometry and helps protect your engine from overheating when used and maintained according to Volvo Penta instructions.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this impeller kit an OEM Volvo Penta part?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — PN 21700445 is a genuine Volvo Penta replacement impeller made to original specifications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What tool is recommended to remove the old impeller?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Use the Volvo impeller puller tool 3843948 to remove the impeller without damaging the pump housing.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Volvo Penta","offers":[{"title":"Default Title","offer_id":48084091109534,"sku":"B016WPZ4OI","price":106.91,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/volvo-penta-impeller-kit-front-packaging.jpg?v=1785846193","url":"https:\/\/northtrailauto.ca\/products\/volvo-penta-water-pump-impeller-kit-pn-21700445-v8-oem-12-blade-5-8-spline-2-1-4-od","provider":"North Trail Auto","version":"1.0","type":"link"}