{"product_id":"3978589-piston-pin-genuine-volvo-penta","title":"3978589 Piston Pin | Genuine Volvo Penta Part","description":"\u003ch2\u003e\n 🔧 Product Description\n\u003c\/h2\u003e\n\u003cp\u003e\n Genuine Volvo Penta piston pin in the standard size, from the Engine group, weighing 0.814 kg and listed for 4 applications across the TWD and TD series. It supersedes part number 477900. Only 2 grams separate it from piston pin 3978588, so order by part number rather than by weight.\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 TWD730ME\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TWD731VE\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TD730ME\n \u003c\/li\u003e\n \u003cli\u003e\n  Volvo Penta TD730VE\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  TWD, TD\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  Standard size\n \u003c\/li\u003e\n \u003cli\u003e\n  0.814 kg\n \u003c\/li\u003e\n \u003cli\u003e\n  Supersedes 477900\n \u003c\/li\u003e\n \u003cli\u003e\n  4 applications across the TWD and TD series\n \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\n 🔌 Function\n\u003c\/h2\u003e\n\u003cp\u003e\n Links the piston to the top of the connecting rod, carrying combustion load down into the rod while letting the rod swing.\n\u003c\/p\u003e\n\u003ch2\u003e\n ⚠️ Common Signs of Failure\n\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n  Knocking or slapping from the top of the engine, loudest when cold\n \u003c\/li\u003e\n \u003cli\u003e\n  Pin surface scored, blued or worn oval\n \u003c\/li\u003e\n \u003cli\u003e\n  Free play felt between the pin and the small end\n \u003c\/li\u003e\n \u003cli\u003e\n  Circlip grooves damaged or a clip found displaced\n \u003c\/li\u003e\n \u003cli\u003e\n  Oil consumption rising alongside the knock\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  This is the standard-size listing — 3978588 is the neighbouring pin and the two cannot be told apart by weight\n \u003c\/li\u003e\n \u003cli\u003e\n  Renew the circlips and check the small end bush at the same time\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  3978589 → Supersedes 477900 → Supersedes 477509\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  477900 earlier number superseded by this part\n \u003c\/li\u003e\n \u003cli\u003e\n  477509 earlier number superseded by this part\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":53385533817124,"sku":"6655402","price":62.59,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/8115\/7924\/files\/original_4a703ba5-dbe2-4ca9-b28d-febbd82819b3.jpg?v=1788092509","url":"https:\/\/www.sawleysautoandmarine.com.au\/products\/3978589-piston-pin-genuine-volvo-penta","provider":"Sawley's Auto and Marine","version":"1.0","type":"link"}