Volvo Penta Heat Exchanger Oil Cooler O-Ring 3583831
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Volvo Penta 3583831 is a genuine OEM O-ring used in Volvo Penta diesel cooling-system service. The strongest current fitment trail places this seal in D4 and D6 heat exchanger and oil-cooler thermostat related assemblies, where it is used as part of the cooling-system sealing stack for the exact applications that call for this number. Current parts references also show this O-ring used across a broad range of D4 and D6 marine diesel variants.
Key Features
- Genuine Volvo Penta OEM O-ring, part number 3583831.
- Used in heat exchanger and oil-cooler thermostat related cooling-system service.
- Strong current fitment trail centers on D4 and D6 diesel applications.
- Commonly grouped with related cooling-service seals including 3583830 and 3583832 in current thermostat-kit references.
- Current parts references show it as an active Volvo Penta service seal.
Engine Compatibility
The strongest supportable fitment trail for Volvo Penta 3583831 is with D4 and D6 marine diesel engines in the cooling-system service group. Current references associate it with many D4 and D6 variants, including engines in the D4-180 through D4-300 range and D6-280 through D6-480 range, depending on the exact serial-number-based application. The clearest assembly-level evidence places it in heat exchanger components and oil cooler for engine with keel cooling references. The safest fitment standard is the exact Volvo Penta serial-number-based parts diagram for the engine being serviced.
Serial Number Fitment Notice
Fitment can vary by engine family, cooling-system layout, heat-exchanger version, and thermostat or oil-cooler configuration. Confirm Volvo Penta part number 3583831 against your engine serial number and the correct Volvo Penta cooling-system diagram before ordering, especially where nearby O-rings in the same cooling stack can look similar but seal different positions.
When This Part Needs Replacement
Replace this O-ring whenever the related heat exchanger, oil-cooler thermostat housing, or adjacent cooling assembly has been opened, or when the original seal shows flattening, hardening, swelling, seepage, or damage during removal. It is also a smart replacement during cooling-system service when the thermostat-kit style sealing group is already apart. This service guidance is based on the part type and the current cooling-system application trail.
Installation Notes
Match this O-ring to the exact Volvo Penta application before installation. The strongest current references place it in the heat exchanger / oil-cooler thermostat sealing group, so confirming both the part number and exact diagram position is the safest cross-check before ordering or reassembly. Clean the sealing groove carefully and verify the neighboring O-rings in the same cooling stack, since this seal is commonly serviced with adjacent O-rings 3583830 and 3583832.
Alternate/Superseded Part Numbers
Use Volvo Penta 3583831 as the primary ordering number for this listing. In the sources reviewed, I did not find a stronger confirmed supersession trail than the active number itself.
Parts Desk Insight
Cooling-system O-rings like this are easy to mix up because several neighboring seals can be replaced during the same D4 or D6 service. Matching the exact Volvo Penta diagram position first is usually much safer than comparing an old seal by size alone.
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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.
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