Volvo Penta Drain Reduction Sleeve | 3858291
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Part Details
- Part Number: 3858291
- Brand: Volvo Penta
- Official Part Type: Drain Reduction Sleeve
- OEM Status: Genuine Volvo Penta OEM — active part number
- Superseded By: No supersession on record; 3858291 remains the current active number
- Weight: 0.049 kg
- System: Drain / Cooling circuit hardware
Compatible Applications
Verify fitment against your engine serial number and the correct Volvo Penta parts diagram before ordering. Serial number ranges and assembly versions can affect reducer hardware within the same engine family.
- Volvo Penta 5.0GXi-E
- Volvo Penta 5.0GXi-EF
- Volvo Penta 5.0OSi-E
- Volvo Penta 5.0OSi-EF
Engine Family
Volvo Penta 5.0L gasoline inboard/sterndrive family (5.0GXi and 5.0OSi series). This sleeve is specific to select configurations within this family — confirm your exact model and serial number before ordering.
Serial Number Notice
Small reducer and sleeve hardware can vary by assembly version even within the same engine family. Always cross-reference part number 3858291 with your engine serial number and the correct Volvo Penta parts schematic to confirm the right fit for your specific unit.
When to Replace
Inspect this sleeve any time the surrounding drain or cooling assembly is already open for service. Replace if you find wear, deformation, corrosion, or looseness. Reusing a marginal sleeve can cause leaks and repeat labor — replacing it during an open service window is good preventive practice.
Installation Notes
Locate this part on the correct Volvo Penta diagram for your serial number before removal. Compare the replacement part carefully against the old sleeve and inspect the mating bore and surrounding hardware before reassembly. Fit matters more than a quick visual match on small reducer hardware.
Kit Contents
Individual component — reduction sleeve only. Verify whether additional hardware (drain plug, gasket, or crush washer) is required for your application. See the Volvo Penta Drain Plug Crush Washer / Gasket 18818 if a drain plug washer is needed for the same service.
Related Parts
- Volvo Penta Drain Plug Crush Washer / Gasket 18818 — commonly replaced at the same service interval
- Volvo Penta Hose 3862901 — 5.0GXi-family cooling hose
- Volvo Penta Heat Exchanger 3861786 — 5.0GXi heat exchanger assembly
- Volvo Penta Hose 3857843 — 5.0GXi-family hose
Service Interval
No fixed mileage or hour interval for this sleeve specifically. Inspect at each engine drain service or whenever the surrounding assembly is open. Follow the Volvo Penta service manual for your model year and serial number range for exact maintenance intervals.
Technical FAQ
Q: Will this sleeve fit my 5.0GXi engine?
A: It is referenced for 5.0GXi-E and 5.0GXi-EF configurations, but always confirm by serial number and Volvo Penta parts diagram — assembly versions within the same family can vary.
Q: Is 3858291 still an active part number?
A: Yes. Current Volvo Penta dealer listings continue to show 3858291 as an active, orderable part with no supersession on record.
Q: What is the weight of this part?
A: Approximately 0.049 kg (49 grams) per Volvo Penta dealer data.
Parts Desk Insight
This sleeve is a common oversight during drain service on 5.0GXi and 5.0OSi engines. Customers often focus on the drain plug and gasket and overlook the reducer itself until it causes a slow seep after reassembly. If the drain area is already open, it is worth inspecting — a new sleeve is inexpensive compared to a repeat service call. Always verify against the schematic: reducer hardware in this family can look identical between positions but be application-specific.
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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