Volvo Penta Hose 3817579
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Volvo Penta 3817579 is a genuine OEM formed water-cooling hose used in Volvo Penta gasoline engine cooling-system service. Current public parts sources describe it as a water circulation / cooling hose, with the clearest application trail identifying it as the hose that connects the transom to the oil cooler on certain Volvo Penta gasoline packages. Current public supersession references also show earlier part number 3808262 updating to 3817579.
Key Features
- Genuine Volvo Penta OEM hose, part number 3817579.
- Current specialist parts references describe it as a formed water-cooling hose.
- Identified as the transom-to-oil-cooler hose in current public product descriptions.
- Current application references associate it with Volvo Penta 4.3L, 5.0L, 5.7L, and 8.1L gasoline engine families.
- Public parts listings also show a 1.25 inch inlet / I.D. reference for this hose family.
Engine Compatibility
The strongest supportable public fitment trail for Volvo Penta 3817579 is with Volvo Penta gasoline engine cooling-system applications in the 4.3L, 5.0L, 5.7L, and 8.1L families. Current public sources are clearer on the hose's routing and engine-family coverage than on one exact schematic position, so the safest fitment standard is the exact Volvo Penta serial-number-based parts lookup for the engine and cooling-system layout being serviced.
Serial Number Fitment Notice
Fitment can vary by engine package, transom arrangement, and cooling-system routing. Confirm Volvo Penta part number 3817579 against your engine serial number and the correct Volvo Penta parts diagram before ordering, especially on installations where multiple molded cooling hoses run between the transom, cooler, and circulation system.
When This Part Needs Replacement
Replace this hose when the original hose shows swelling, cracking, soft spots, clamp-area distortion, coolant seepage, abrasion, or age-related hardening. It is also a smart replacement during adjacent cooling-system service if the original hose has already been disturbed or shows visible wear.
Installation Notes
Match this hose to the exact Volvo Penta application before installation. Current public sources most clearly identify it as the transom-to-oil-cooler cooling hose, so confirming both the part number and the exact hose routing in the Volvo Penta parts lookup is the safest cross-check before ordering or reassembly. Inspect the related clamps and the adjoining transom and cooler connections at the same time to help avoid repeat cooling-system leaks after service.
Alternate/Superseded Part Numbers
Current public supersession references show 3808262 as an earlier number updated to 3817579. Use 3817579 as the current primary OEM ordering number for this listing.
Parts Desk Insight
Cooling hoses in this area are easy to mis-order because several molded hoses can look close once they are off the engine. Matching the exact Volvo Penta serial-number-based hose routing first is usually much safer than comparing bends and diameter by eye alone.
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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.
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