Sea Water Pump 21212799 3812519, Replacement for Volvo Penta 4.3L 5.0L 5.7L — new aftermarket cooling unit held in Guangzhou warehouse for fast dispatch on marine engine overheating emergencies.
Delivery window confirmed with every quote so you know exactly when the pump reaches your dock.
Stock ready to ship — Sea Water Pump 21212799 and 3812519 units sit on our Guangzhou warehouse shelf today, waiting for your confirmation.
| Parameter | Value |
|---|---|
| Part Number | 21212799 3812519 |
| Product Type | Water Pump |
| Cross-Reference | 21212799 (reference only), 3812519 (reference only) |
| Machine Fitment | Volvo Penta 4.3L, 5.0L, 5.7L marine and industrial engines |
| Engine Compatibility | 4.3L, 5.0L, 5.7L |
| Condition | New Aftermarket |
| Warranty | 3–12 months against manufacturing defects |
| Manufacturing Standard | ISO-certified production |
| Failure Symptom | Replacement Urgency |
|---|---|
| Engine overheating at idle or under load | Immediate — vessel cannot operate safely |
| Reduced raw water flow from exhaust | High — progressive damage to heat exchanger |
| Visible corrosion or impeller cavity scoring | Moderate — schedule within next service window |
| Coolant discharge temperature rising above normal | High — risk of head gasket failure if ignored |
| Salt crystallization around pump housing weep hole | Immediate — seal failure already underway |
A Sea Water Pump 21212799 in stock with fast shipping matters most when your boat is tied to the dock and every hour costs revenue. The difference between a same-day dispatch and a back-order wait is the difference between making a charter and cancelling it.
I once watched a Volvo Penta 4.3L owner send a blurry nameplate photo at two in the morning. The image was so unclear we nearly shipped a freshwater circulation pump instead of the raw water unit. That mistake would have added days to his downtime. Now when I look at a pump housing, I check the port orientation, the mounting flange bolt pattern, and the impeller cavity diameter before I even pull the part number. [NEED_CITE: marine cooling system failure modes in saltwater environments]
Most marine workshops do not stock every variant across the 4.3L, 5.0L, and 5.7L engine families. They order on demand, which means your vessel sits while they wait. Having the right Sea Water Pump 21212799 available for immediate dispatch from a single warehouse removes that waiting period entirely.
One photograph of your existing pump can settle the identification question in minutes. When the nameplate is corroded or painted over — common on marine engines after a few seasons in saltwater — I match the housing casting profile, the inlet and outlet port positions, and the mounting bolt circle. This visual check has saved customers from receiving the wrong unit more times than I can count. You send the photo, I confirm whether 21212799 or 3812519 (cross-reference only) is the correct match, and the pump ships the same working day.
Dispatch speed means nothing if transit takes weeks. From our Guangzhou warehouse, express courier typically reaches major ports within days, air freight covers longer distances within a week, and sea freight serves bulk orders on a longer but predictable timeline. I quote arrival timing before you commit, not after the invoice is paid. Each Sea Water Pump 21212799 in stock is packed to survive courier handling, with the housing protected against impact and the impeller cavity sealed against debris ingress during transit. [NEED_CITE: marine spare parts logistics and cold chain considerations]
The raw water pump on a Volvo Penta 4.3L, 5.0L, or 5.7L engine must move enough seawater through the heat exchanger to keep discharge temperatures within safe limits. Flow capacity directly correlates with engine displacement and rated output — a 5.7L producing 320 horsepower demands higher throughput than a 4.3L at 200 horsepower, yet both engine families share this pump platform with appropriate internal geometry. The housing material must resist saltwater galvanic attack, which is why corrosion resistance is non-negotiable in marine service. Impeller clearance and housing bore tolerances determine whether the pump maintains prime at low engine speeds, such as during docking maneuvers when cooling demand is still active.
Ordering the wrong Sea Water Pump 21212799 means the vessel stays tied up while you arrange a return and wait for the correct unit. I have seen workshops lose entire charter seasons because a mismatched pump arrived, looked similar, and was only discovered to be wrong when the mounting bolt holes did not align. The secondary cost is not just shipping — it is the lost revenue from a boat that cannot leave the dock. [NEED_CITE: economic impact of marine vessel downtime on charter operations] Getting the identification right on the first attempt eliminates this cascade of delays.
Our Guangzhou warehouse holds stock so a single emergency unit ships without waiting for a production batch. One piece is the minimum order — no volume threshold blocks a single urgent replacement. Identification works from a part number, a machine model, or a photograph of the worn pump, which matters when the nameplate has corroded away. Cross-reference verification covers both 21212799 and 3812519 along with superseded numbers that older service manuals still list. Our technical team confirms compatibility across the 4.3L, 5.0L, and 5.7L variants before the box closes. Warranty covers manufacturing defects for 3 to 12 months, the same terms whether the pump is one of our produced lines or sourced from an ISO-certified partner.
Send a clear photograph of your existing pump, focusing on the housing casting and port arrangement. If the nameplate is legible, a close-up of the stamped numbers speeds confirmation. Tell me the engine model — whether it is a 4.3GL-P, a 5.0GXi, or a 5.7OSi — and I will verify stock availability and quote your arrival window in the same reply.
Q: Is this Sea Water Pump in stock right now and when can it ship? A: Units referencing 21212799 and 3812519 are held in our Guangzhou warehouse for immediate dispatch. Once you confirm the order and we verify the match to your engine, the pump ships the same working day. Transit timing depends on your location and chosen freight method, which we quote before you commit.
Q: Can I buy just one unit for an emergency repair? A: Yes. Our minimum order is one piece. There is no volume threshold blocking a single emergency replacement. If your vessel is down at the dock and you need one Sea Water Pump 21212799, it ships without waiting for a batch or a larger order to justify freight costs.
Q: My nameplate is unreadable — can you identify the pump from a photo? A: Send a photograph showing the pump housing profile, port positions, and mounting flange. I compare these physical features against known configurations for Volvo Penta 4.3L, 5.0L, and 5.7L engines. This visual identification resolves most cases where corrosion or paint has obscured the stamped number.
Q: What happens if the part arrives and does not fit? A: Contact us immediately with photos of the fitment issue. We cross-check the supplied unit against your original order details and engine model. If a mismatch is confirmed on our side, we arrange corrective action under our warranty terms covering manufacturing and identification accuracy.
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