Volvo Penta Heat Exchanger Aftercooler O-Ring 3581070
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Volvo Penta 3581070 is a genuine OEM O-ring used in Volvo Penta cooling-system service. The strongest current application trail places this part as a heat exchanger / aftercooler O-ring on compact Volvo Penta diesel engines, especially in the D2 and D3 families. Current fitment coverage consistently associates this O-ring with the heat-exchanger and aftercooler end-cap sealing points where this exact number is specified.
Key Features
- Genuine Volvo Penta OEM O-ring, part number 3581070.
- Used in heat exchanger / aftercooler cooling-system service.
- Strong current fitment trail centers on D2 and D3 diesel applications.
- Common service guidance for compact Volvo Penta diesel platforms treats this as a routine cooling-system sealing part.
- Current fitment references often indicate multiple O-rings are required for a complete service, depending on the engine and assembly being opened.
Engine Compatibility
The strongest supportable fitment trail for Volvo Penta 3581070 is with Volvo Penta compact diesel cooling-system applications, especially D2-50F, D2-55, D2-60F, D2-75, and multiple D3 family engines. Broader fitment references also associate this O-ring with additional Volvo Penta diesel families, but the clearest current application is as a heat exchanger / aftercooler sealing O-ring on D2 and D3 engines. The safest fitment standard is the exact Volvo Penta serial-number-based parts diagram for the engine and cooling assembly being serviced.
Serial Number Fitment Notice
Fitment can vary by engine family, heat-exchanger version, aftercooler layout, and serial-number range. Confirm Volvo Penta part number 3581070 against your engine serial number and the correct Volvo Penta cooling-system diagram before ordering, especially on compact diesel engines where similar O-rings can appear in nearby end-cap and stack sealing positions.
When This Part Needs Replacement
Replace this O-ring whenever the heat exchanger or aftercooler has been opened, or when the original seal shows flattening, hardening, swelling, seepage, or damage during removal. It is also a smart replacement during periodic cooling-system service if the end caps are being removed for inspection or cleaning.
Installation Notes
Match this O-ring to the exact Volvo Penta application before installation. The strongest current fitment trail places it in the heat exchanger / aftercooler sealing group, so confirming both the part number and exact diagram position is the safest cross-check before ordering or reassembly. Clean the sealing grooves carefully, inspect the end caps and mating surfaces, and avoid damaging the cooling stack during service. On many compact diesel applications, more than one O-ring may be required for a complete reseal.
Alternate/Superseded Part Numbers
Use Volvo Penta 3581070 as the primary ordering number for this listing.
Parts Desk Insight
Cooling-system O-rings are easy to underestimate because they look simple on the bench. On compact Volvo Penta diesels, replacing these seals during heat-exchanger or aftercooler service is usually much cheaper than reopening the same assembly for a small seep later.
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Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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