Volvo Penta Seawater Pump Flange Gasket 3888837
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Volvo Penta Seawater Pump Flange Gasket — Part No. 3888837
| Part Number | 3888837 |
| Brand | Volvo Penta |
| Product Type | Seawater Pump Flange Gasket |
| System | Cooling — Seawater Pump Assembly |
| Diagram Position | Flange-to-pump sealing gasket in seawater pump assembly; shown alongside hose attachment 848596, flange 842029, and pipe 21120684 |
| Supersedes | 820877 → 3888837 |
| Weight (estimated) | 0.01 kg |
This is the OEM sealing gasket for the flange-to-pump connection on selected Volvo Penta seawater pump assemblies. It appears in Volvo Penta cooling-system diagrams at the hose attachment and flange section of the seawater pump, where it provides the sealing interface between the flange and the pump body. Fitment should be confirmed by the exact engine model and diagram position rather than by appearance alone.
Compatible Applications
Application is determined by seawater pump assembly and diagram position rather than a specific engine family list. Confirm fitment using the exact Volvo Penta parts breakdown for your engine model and serial number. This gasket is confirmed in seawater pump assemblies where the diagram calls out part number 3888837 at the flange-to-pump position alongside:
- Hose attachment 848596
- Flange 842029
- Pipe 21120684
Serial Number Fitment Notice
Seawater pump components can vary by engine family, pump revision, and serial-number range. Always confirm 3888837 against your engine serial number and the correct seawater pump diagram before ordering — especially on engines with prior cooling-system service or updated pump components.
When to Replace
Replace this gasket whenever the seawater pump flange or adjacent cooling-system joint is opened for service, or when the existing gasket shows:
- Seepage or active coolant leakage at the flange connection
- Flattening, tearing, or swelling
- Visible damage on disassembly
Reusing a compressed or disturbed gasket increases the risk of a repeat leak. Replace it as a matter of course during any pump or hose-connection service at this position.
Installation Notes
Remove all old gasket material and inspect mating surfaces for corrosion or damage before fitting the new gasket. Confirm the gasket matches the exact flange position in the seawater pump diagram. Tighten related hardware evenly and to the torque specified in the applicable Volvo Penta service procedure to ensure a reliable seal.
Superseded Part Numbers
- Earlier OEM: 820877
- Current OEM (this part): 3888837
Parts Desk Insights
Best use: Order 3888837 when servicing the seawater pump flange connection on an engine where the Volvo Penta diagram calls out this part number at the flange-to-pump position. It is the correct OEM replacement for the earlier 820877 gasket at this location.
Common customer issue: Small pump gaskets are easy to mis-order by matching shape after teardown. On Volvo Penta cooling-system service, using the seawater pump diagram and serial-number-based lookup is more reliable than matching by appearance — multiple gaskets can look similar but cover different flange positions or pump revisions.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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