Volvo Penta Cooling Water Tube 861090 | AD31 AD41 TAMD31 TAMD41 TMD31 TMD41 DP-E DP-D1 HS1A HS1E
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Part Number: 861090
Brand: Volvo Penta (OEM Genuine)
Official Part Name: Tube
Application: Cooling-water / seawater connection plumbing
Supersedes: 860640, 3582721, 3582722, 3582723, 3582724
Genuine Volvo Penta 861090 is an OEM cooling-water tube used in seawater and cooling-water plumbing on selected Volvo Penta diesel engines, stern drives, and reverse-gear installations. Parts diagrams place it in exhaust and cooling-water pipe assemblies, SX-drive cooling-water intake circuits, and HS1A / HS1E reverse-gear cooling-water connections. 861090 is the current OEM part, superseding earlier numbers 860640 and 3582721 through 3582724.
⚠️ Fitment Notice: 861090 appears across several different Volvo Penta cooling-water assemblies. Confirm the exact engine model, drive type, transmission, and serial number against the applicable Volvo Penta parts diagram before ordering — do not identify this tube by shape or appearance alone.
Compatible Applications
- Volvo Penta AD31L-A
- Volvo Penta AD31P-A (including SX-drive cooling-water intake — engines without power steering)
- Volvo Penta AD41L-A
- Volvo Penta AD41P-A
- Volvo Penta D41L-A
- Volvo Penta TAMD31 series
- Volvo Penta TAMD41 series
- Volvo Penta TMD31 series
- Volvo Penta TMD41 series
- Volvo Penta DP-E sterndrive
- Volvo Penta DP-D1 sterndrive
- Volvo Penta HS1A reverse-gear cooling-water connection
- Volvo Penta HS1E reverse-gear cooling-water connection
- Confirm exact engine, drive, and transmission against the cooling-water diagram for the specific installation before ordering
Engine / Drive Family: Volvo Penta AD31/41, TAMD31/41, TMD31/41 diesel; DP-E, DP-D1 sterndrive; HS1A, HS1E reverse gear
System: Seawater / cooling-water plumbing
Diagram Positions:
- Exhaust and cooling-water pipe assembly
- SX-drive cooling-water intake circuit (AD31P-A without power steering)
- HS1A / HS1E reverse-gear to seawater-pump connection
Superseded / Alternate Part Numbers
- Current OEM: 861090
- Supersedes: 860640
- Supersedes: 3582721
- Supersedes: 3582722
- Supersedes: 3582723
- Supersedes: 3582724
- Note: 861090 was also supplied as an individual component when older 3582723 connecting-kit configurations were superseded
When to Replace
- Visible corrosion, pitting, or wall thinning on the tube body
- Tube is bent, cracked, or physically deformed
- Hose sealing surfaces at either end are corroded or damaged
- Cooling-water leakage develops around the connection
- Internal restriction or scale buildup is suspected after corrosion or contamination event
- Tube is damaged during hose, transmission, or drive service
Service Interval
Inspect the tube and its hose connections during annual cooling-system service or whenever the seawater circuit is opened. Corrosion is the primary failure mode — any visible pitting or wall thinning warrants replacement before the next season.
Installation Notes
- Inspect adjoining hoses and replace any that are hardened, cracked, or swollen
- Replace hose clamps if worn — applicable assemblies commonly use Volvo Penta clamp 961669
- Related hoses documented in nearby assemblies include 861738, 861739, and 861742 — confirm against the applicable diagram
- Check all sealing surfaces for corrosion before fitting new hoses
- Route hoses without kinks and confirm correct orientation per the applicable parts diagram
- Verify seawater flow and check all connections for leakage after start-up
- Avoid side-loading or bending the tube during assembly
Technical FAQ
Why does 861090 appear in so many different cooling-water assemblies?
861090 is a standardised connection tube used across several Volvo Penta cooling-water circuits that share a common tube specification, including drive cooling-water intake, exhaust cooling-water piping, and reverse-gear seawater connections. The same tube dimension was used in multiple installation positions across these related engine and drive families.
I have one of the older superseded numbers — is 861090 the correct replacement?
Yes. Volvo Penta replacement documentation confirms 861090 as the current OEM replacement for 860640 and 3582721 through 3582724. If your parts diagram still shows one of those older numbers, order 861090 as the current service part.
How do I identify which cooling-water assembly my tube belongs to?
Use the engine model, serial number, and the specific assembly (drive cooling-water intake, exhaust piping, or reverse-gear cooling connection) to locate the correct Volvo Penta parts diagram. Because 861090 appears in several positions, diagram confirmation is the only reliable way to verify fitment for your exact installation.
Parts Desk Insights
861090 is a part where the cooling-system or transmission diagram is essential — not optional. It appears in multiple different assemblies across the AD31/41 and TAMD families, so a customer asking for “the cooling tube” without specifying the assembly or serial number can easily end up with the right part number but the wrong installation context. The most useful counter question is: which system is the tube coming out of — the drive cooling-water intake, the exhaust cooling-water piping, or the reverse-gear seawater connection? Also worth noting: if any of the superseded numbers (860640 or 3582721–24) are requested, confirm 861090 is the current OEM replacement before processing the order.
Related Parts
- Volvo Penta Thermostat Housing to Heat Exchanger Hose 859800 | MD22 TMD22 TAMD22
- Volvo Penta Cooling System Filler Cap 860866 | D3 Series Diesel
- Volvo Penta Exhaust Bellows 3850426 | SX DP-S DP-SM
- Volvo Penta Exhaust Pipe 3858873 – SX / DP-S Sterndrive
- Volvo Penta Heat Exchanger Sealing Strip 860127 | AD31 AD41 TAMD31 TAMD41 KAD42 KAD44 KAD300
Shipping information
In-stock and OEM parts: ship same or next business day.
Supplier-stock items are usually ready for pickup or shipping within 24 hours of ordering.
Special-order timing may vary.
Returns & warranty
Returns & Satisfaction Guarantee
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If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
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