{"product_id":"volvo-penta-heat-exchanger-aftercooler-o-ring-3581070","title":"Volvo Penta Heat Exchanger \/ Aftercooler O-Ring 3581070 | D2 D3 Diesel OEM","description":"\u003ch2\u003eVolvo Penta OEM O-Ring – Part No. 3581070\u003c\/h2\u003e\n\n\u003ch3\u003ePart Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 3581070\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Volvo Penta (Genuine OEM)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e O-Ring \/ Cooling System Seal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Cooling System – Heat Exchanger \/ Aftercooler\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e 3581070\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta D2-50F diesel inboard\u003c\/li\u003e\n\u003cli\u003eVolvo Penta D2-55 diesel inboard\u003c\/li\u003e\n\u003cli\u003eVolvo Penta D2-60F diesel inboard\u003c\/li\u003e\n\u003cli\u003eVolvo Penta D2-75 diesel inboard\u003c\/li\u003e\n\u003cli\u003eVolvo Penta D3 family diesel inboards (multiple variants)\u003c\/li\u003e\n\u003cli\u003eAdditional compact Volvo Penta diesel applications – confirm via serial number and parts diagram\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSerial Number Fitment Notice\u003c\/h3\u003e\n\u003cp\u003eFitment can vary by engine build date, heat exchanger version, and serial number range. Always confirm part number \u003cstrong\u003e3581070\u003c\/strong\u003e against your engine serial number and the correct Volvo Penta cooling system diagram before ordering. Similar O-rings appear in nearby end-cap and stack sealing positions on these engines.\u003c\/p\u003e\n\n\u003ch3\u003eSystem \u0026amp; Diagram Position\u003c\/h3\u003e\n\u003cp\u003eThis O-ring seals the \u003cstrong\u003eend-cap \/ end-cover interface\u003c\/strong\u003e on the heat exchanger or aftercooler assembly. It is located at the point where the end cover meets the heat exchanger body or cooling stack. On most D2 and D3 applications, multiple O-rings of this type may be required for a complete reseal — check your engine's parts diagram for the exact quantity per assembly.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e OEM-spec elastomer (heat and coolant resistant)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Heat exchanger end-cap \/ aftercooler sealing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity Required:\u003c\/strong\u003e Varies by engine and assembly – confirm via parts diagram\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e ~20 g\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cp\u003eReplace this O-ring whenever the heat exchanger or aftercooler has been opened for service, or when the original seal shows signs of flattening, hardening, swelling, seepage, or damage during removal. It is also recommended as a routine replacement during periodic cooling system service if the end caps are being removed for inspection or cleaning.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003eClean the sealing grooves thoroughly before installation. Inspect end caps and mating surfaces for corrosion or damage. Lubricate the O-ring lightly with clean coolant or a compatible O-ring lubricant before seating. Do not reuse the original O-ring after removal. On many compact diesel applications, more than one O-ring is required for a complete reseal — order accordingly.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Parts\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/volvo-penta-oem-heat-exchanger-o-ring-3580818\"\u003eVolvo Penta Heat Exchanger O-Ring 3580818\u003c\/a\u003e – companion heat exchanger seal\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/volvo-512\"\u003eVolvo Penta Heat Exchanger \/ Oil Cooler O-Ring 3583831\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/volvo-513\"\u003eVolvo Penta Cooling System O-Ring 3583832\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/volvo-522\"\u003eVolvo Penta Thermostat Cooling O-Ring 3586514\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/volvo-penta-heat-exchanger-screw-3858994\"\u003eVolvo Penta Heat Exchanger Screw 3858994\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/volvo-819\"\u003eVolvo Penta Heat Exchanger 3861786\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/volvo-223\"\u003eVolvo Penta Raw Water Pump Impeller Kit 21700445\u003c\/a\u003e – recommended cooling system service companion\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/volvo-1114\"\u003eVolvo Penta Coolant Pump Gasket 862596\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\n\u003cp\u003eThe 3581070 is one of the most commonly overlooked parts during heat exchanger service on D2 and D3 engines. The O-ring itself is inexpensive, but skipping it during a cooling system opening is a frequent cause of callbacks — the original seal rarely survives removal in reusable condition. Best practice is to order this O-ring (and the companion \u003ca href=\"\/products\/volvo-penta-oem-heat-exchanger-o-ring-3580818\"\u003e3580818\u003c\/a\u003e) before starting any heat exchanger or aftercooler job, so the engine isn't sitting open while you wait on parts.\u003c\/p\u003e\n\u003cp\u003eA common issue: customers order one O-ring when their engine requires two or more for a complete reseal. Check your specific engine's parts diagram for the correct quantity before ordering.\u003c\/p\u003e","brand":"VOL","offers":[{"title":"Default Title","offer_id":43563999133732,"sku":"3581070","price":35.9,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/9cfd2afa-c198-467c-92ec-550f456b4501.png?v=1776458986","url":"https:\/\/marisolmarine.com\/products\/volvo-penta-heat-exchanger-aftercooler-o-ring-3581070","provider":"Marisol Marine Company","version":"1.0","type":"link"}