21630488 Adapter | Genuine Volvo Penta Part
21630488 Adapter | Genuine Volvo Penta Part
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🔧 Product Description
A tee adapter used in the seawater cooling system between the heat exchanger and exhaust elbows on Volvo Penta V8 marine petrol engines.
🚤 Compatibility
Typically suits:
- Volvo Penta V8-380-CE-A
- Volvo Penta V8-380-C-B
- Volvo Penta V8-380-CE-B
- Volvo Penta V8-380-C-D
- Volvo Penta V8-380-CE-D
- Volvo Penta V8-430-CE-D
- Volvo Penta V8-350-C-D
- Volvo Penta V8-350-CE-D
- Volvo Penta V8-380-C-A
- Engine Family: V
- HP Range: 350-430 HP
⚙️ Key Features
- Seawater distribution tee
- Heat-exchanger-to-exhaust-elbow circuit
- Correct hose-tail diameters and flow passages
- Used with hoses 21616859 and 21616871
🔌 Function
The adapter divides seawater flow from the heat exchanger into the branches feeding the exhaust-elbow cooling connections.
⚠️ Common Signs of Failure
- Seawater leakage
- Internal corrosion or restriction
- Cracked hose tail
- Uneven exhaust-elbow cooling
- Loose or damaged hose clamps
🛠️ Service Notes
- Check the adapter against both of the parts it has to join before fitting — adapters are specific to an engine and its variant, and one that is close but not correct will not seat or seal properly
- Clean and inspect both mating faces or connector ends; grit, old sealant or corrosion on one side is the usual reason an adapted joint leaks or works intermittently
- Renew any O-ring, gasket or sealing washer belonging to the joint rather than reusing the old one, and lubricate rubber seals lightly so they slide into place instead of rolling or nipping
- Tighten threaded adapters to the figure given in the workshop manual for that connection; many go into aluminium or onto a soft seat and will distort if pulled up hard
- Where the adapter is a workshop tool, check it for thread wear and damage before use and never modify it to make something fit
🔄 Supersession & Cross Reference
OEM / Related Numbers
- 21616859 - Related seawater hose
- 21616871 - Related seawater hose
- 983744 - Hose nipple
- 3863439 - Hose clamps
- 978166 - Hose clamps
- 21807153 - Related hose
- 22592604 - Adapter
- 976970 - O-ring
📦 Condition
- Genuine Volvo Penta part
- Brand new
- Supplied in original or equivalent packaging
Shipping & Delivery
Shipping & Delivery
Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.
Returns & Warranty
Returns & Warranty
14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in new, unused condition for a refund or exchange. Manufacturer warranties apply to new parts. Full details in our Refunds & Returns policy.
Not sure this fits?
Not sure this fits?
Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.
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