{"product_id":"21779581-circulation-pump-genuine-volvo-penta","title":"21779581 Circulation Pump | Genuine Volvo Penta Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n Freshwater circulation pump for the D2-50F closed cooling circuit. The pump circulates coolant through the cylinder block, cylinder head and heat exchanger to maintain stable operating temperature.\n\u003c\/p\u003e\n\u003ch2\u003e\n 🚤 Compatibility\n\u003c\/h2\u003e\n\u003cp\u003e\n Typically suits:\n\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Volvo Penta D2-55\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D2-55B\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D2-55C\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D2-55D\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D2-55E\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D2-55F\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D2-50F\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D2-75\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D2-75B\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D2-75C\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D2-75F\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta D2-60F\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   Engine Family:\n  \u003c\/strong\u003e\n  D\n \u003c\/li\u003e\n \u003cli\u003e\n  \u003cstrong\u003e\n   HP Range:\n  \u003c\/strong\u003e\n  50-75 HP\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n ⚙️ Key Features\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Engine-specific pump capacity\n \u003c\/li\u003e\n \u003cli\u003e\n  Factory pulley and mounting geometry\n \u003c\/li\u003e\n \u003cli\u003e\n  Sealed bearing and shaft arrangement\n \u003c\/li\u003e\n \u003cli\u003e\n  Designed for the original gasket and coolant path\n \u003c\/li\u003e\n \u003cli\u003e\n  Correct belt tension and coolant are required\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n Circulates freshwater coolant through the engine and heat exchanger.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Coolant leakage from the weep hole or seal\n \u003c\/li\u003e\n \u003cli\u003e\n  Bearing rumble or shaft play\n \u003c\/li\u003e\n \u003cli\u003e\n  Reduced heater or coolant circulation\n \u003c\/li\u003e\n \u003cli\u003e\n  Pulley wobble or belt-tracking problems\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🛠️ Service Notes\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Confirm the exact D2 pump variant against the engine's serial before ordering — this circulation-pump range spans units from just over 1 kg up to nearly 5 kg, and a generic \"circulation pump\" description does not distinguish them\n \u003c\/li\u003e\n \u003cli\u003e\n  Check the drive belt tension and thermostat before condemning the pump, and flush the system and fit fresh coolant when it is renewed\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔄 Supersession \u0026amp; Cross Reference\n\u003c\/h2\u003e\n\u003ch3\u003e\n OEM Supersession Chain\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  21779581 → Supersedes \/ replaces exchange circulation pump 3801345\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n OEM \/ Related Numbers\n\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n  21194527 - pump gasket\n \u003c\/li\u003e\n \u003cli\u003e\n  21194494 - pulley references\n \u003c\/li\u003e\n \u003cli\u003e\n  22212494 - pulley references\n \u003c\/li\u003e\n \u003cli\u003e\n  3580575 - plate\n \u003c\/li\u003e\n \u003cli\u003e\n  3580576 - gasket\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 📦 Condition\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Genuine Volvo Penta part\n \u003c\/li\u003e\n \u003cli\u003e\n  Brand new\n \u003c\/li\u003e\n \u003cli\u003e\n  Supplied in original or equivalent packaging\n \u003c\/li\u003e\n\u003c\/ul\u003e\n","brand":"Volvo Penta","offers":[{"title":"Default Title","offer_id":53385412313380,"sku":"M316240","price":1477.98,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_eb0219b2-a7db-4337-ba8b-233fdbd683e4.jpg?v=1788061031","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/21779581-circulation-pump-genuine-volvo-penta","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}