{"product_id":"volvo-449","title":"Volvo Penta D3 Turbocharger Oil Return Sealing Ring 31251439 | OEM","description":"\u003ch2\u003ePart Information\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 31251439\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Volvo Penta\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOfficial Product Type:\u003c\/strong\u003e Sealing Ring — Turbocharger Oil Return \/ Drain Connection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupersedes:\u003c\/strong\u003e 30637866, 1397775, 8670312\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaced By:\u003c\/strong\u003e No current supersession on record\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagram Position:\u003c\/strong\u003e D3 Inlet \/ Exhaust System — Turbocharger oil-return pipe connection, alongside exhaust manifold components\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Volvo Penta 31251439 is a genuine OEM metal sealing ring used at the turbocharger oil-return (drain) connection on Volvo Penta D3 marine diesel engines. It seals the oil-return pipe where it connects to the turbocharger, preventing oil seepage at this junction. This seal is specific to the turbocharger oil-return circuit — it is not a sterndrive, propeller-shaft, or general engine seal. It supersedes earlier references 30637866, 1397775, and 8670312.\u003c\/p\u003e\n\n\u003ch2\u003eCompatible Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta D3-110I\u003c\/li\u003e\n\u003cli\u003eVolvo Penta D3-130A \/ D3-130I\u003c\/li\u003e\n\u003cli\u003eVolvo Penta D3-140A \/ D3-140I\u003c\/li\u003e\n\u003cli\u003eVolvo Penta D3-150I\u003c\/li\u003e\n\u003cli\u003eVolvo Penta D3-160A \/ D3-160I\u003c\/li\u003e\n\u003cli\u003eVolvo Penta D3-170A \/ D3-170I\u003c\/li\u003e\n\u003cli\u003eVolvo Penta D3-200A \/ D3-200I\u003c\/li\u003e\n\u003cli\u003eVolvo Penta D3-220A \/ D3-220I\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eConfirm your complete engine model and serial number against the Volvo Penta D3 inlet \/ exhaust system diagram before ordering. Several gaskets and sealing rings are used around the turbocharger oil-pressure and oil-return connections — verify the exact diagram position before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eSerial Number Requirements\u003c\/h2\u003e\n\u003cp\u003eAlways confirm your engine model and serial number using the Volvo Penta D3 inlet and exhaust system parts diagram. Multiple seals are used in close proximity around the turbocharger oil connections — matching the exact diagram position is the most reliable way to ensure you order the correct seal.\u003c\/p\u003e\n\n\u003ch2\u003eSystem\u003c\/h2\u003e\n\u003cp\u003eExhaust \/ Turbocharger System — Turbocharger Oil Return (Drain) Connection\u003c\/p\u003e\n\n\u003ch2\u003eRelated Parts — D3 Turbocharger Assembly\u003c\/h2\u003e\n\u003cp\u003eThe following components are part of the D3 turbocharger assembly and should be inspected during sealing ring service:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTurbocharger — 3847392\u003c\/li\u003e\n\u003cli\u003eOil Pressure Pipe — 3584290\u003c\/li\u003e\n\u003cli\u003eOil Return Pipe — 3584289\u003c\/li\u003e\n\u003cli\u003ePlane Gasket — 420641\u003c\/li\u003e\n\u003cli\u003eExhaust Manifold — 3812601\u003c\/li\u003e\n\u003cli\u003eGasket — 30729340\u003c\/li\u003e\n\u003cli\u003ePrevious Sealing Ring — 30637866 (superseded by 31251439)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDimensions \u0026amp; Weight\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Approximately 0.05 kg\u003c\/li\u003e\n\u003cli\u003eRing dimensions per Volvo Penta D3 turbocharger oil-return assembly specification\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhen This Part Needs Replacement\u003c\/h2\u003e\n\u003cp\u003eReplace the sealing ring whenever the turbocharger oil-return connection is separated for service, or if inspection reveals any of the following:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOil seepage around the return pipe connection\u003c\/li\u003e\n\u003cli\u003eVisible flattening, deformation, or surface damage to the ring\u003c\/li\u003e\n\u003cli\u003eLoss of sealing tension\u003c\/li\u003e\n\u003cli\u003eLeakage following turbocharger or exhaust manifold service\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMetal sealing rings should always be replaced rather than reused once disturbed.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eInstall the new sealing ring on clean, undamaged mating surfaces. Verify that the oil-return pipe is correctly aligned before tightening the associated hardware. Inspect the oil-return pipe, pressure pipe, and surrounding turbocharger fittings for corrosion or damage during service.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical FAQ\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What superseded part numbers does 31251439 replace?\u003c\/strong\u003e\u003cbr\u003eA: 31251439 supersedes earlier references 30637866, 1397775, and 8670312. Always order by the current active OEM number.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this the same as a sterndrive or shaft seal?\u003c\/strong\u003e\u003cbr\u003eA: No. This is a metal sealing ring specific to the turbocharger oil-return connection in the D3 inlet and exhaust system. It is not a sterndrive, propeller-shaft, or general engine seal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are there other seals in the same turbocharger area?\u003c\/strong\u003e\u003cbr\u003eA: Yes — several gaskets and sealing rings are used around the turbocharger oil-pressure and oil-return connections. Confirm the exact diagram position before ordering to ensure you get the correct seal for your specific connection point.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should I replace this seal every time I remove the turbocharger?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Metal sealing rings should always be replaced when the connection is disturbed. Reusing a compressed or deformed ring risks oil seepage after reassembly.\u003c\/p\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003eThis seal is easy to overlook during turbocharger service because it’s small and inexpensive, but oil seepage at the return connection is a common post-service issue when it’s reused or forgotten. It’s worth including it automatically any time a customer orders turbocharger or oil-return pipe parts for the D3. The most common confusion is customers searching for a “turbocharger seal” and landing on sterndrive or shaft seals — this part is specific to the oil-return drain connection in the D3 inlet and exhaust assembly.\u003c\/p\u003e","brand":"VOL","offers":[{"title":"Default Title","offer_id":43563998052388,"sku":"31251439","price":30.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/28934bcf-3ed1-460e-b773-ae47a2b29237.png?v=1787520662","url":"https:\/\/marisolmarine.com\/products\/volvo-449","provider":"Marisol Marine Company","version":"1.0","type":"link"}