Volvo Penta Oil Dipstick Tube Nipple 3886951 | D4 D6 Marine Diesel
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Part Details
- Part Number: 3886951
- Brand: Volvo Penta
- Type: Nipple / fitting — oil dipstick tube assembly
- System: Engine lubrication — oil dipstick / oil-level tube assembly
- Diagram Position: Lubricating-system dipstick tube assembly — adjacent to tube 3593955 and dipstick 21650012
- Qty Per Assembly: 1
- Weight: Approx. 0.05 kg
About This Part
Genuine Volvo Penta 3886951 is an OEM nipple fitting used in the engine lubrication system on selected Volvo Penta D4 and D6 marine diesel engines. Parts diagrams place 3886951 directly beside oil dipstick tube 3593955 and the dipstick assembly, where it forms part of the oil-level tube arrangement in the lubrication system. This is not a generic threaded nipple — its position is specific to the D4/D6 dipstick tube arrangement, and it should not be confused with other nipples in the same lubrication system (such as 423067 or 3583695) that occupy different diagram positions. Confirm engine model, suffix, and serial number against the lubricating-system diagram before ordering.
Compatible Applications
D4 F-Series:
- Volvo Penta D4-180I-F
- Volvo Penta D4-225A-F / D4-225I-F
- Volvo Penta D4-260A-F / D4-260D-F / D4-260I-F
- Volvo Penta D4-300A-F / D4-300D-F / D4-300I-F
D6:
- Volvo Penta D6-280A / D6-280I
- Volvo Penta D6-310A / D6-310D / D6-310I
- Volvo Penta D6-330A / D6-330D / D6-330I
- Volvo Penta D6-350A
- Volvo Penta D6-370A / D6-370D / D6-370I
- Volvo Penta D6-400A
- Volvo Penta D6-435D / D6-435I
D4 and D6 engines underwent production changes that can affect surrounding dipstick tubes, brackets, guides, and hardware. Always confirm engine model, suffix, and serial number against the applicable lubricating-system diagram before ordering.
When to Replace
Replace this nipple if it shows any of the following:
- Damage or deformation from removal or service
- Corrosion or surface deterioration
- Cracking or fracture
- Worn mating surfaces that no longer seal or retain correctly
- Inability to securely connect or support the dipstick tube
- Damage found during oil dipstick tube or sump service
Any leak or poor fit in the dipstick tube area should be corrected before returning the engine to service.
Installation Notes
Inspect the associated oil dipstick tube 3593955, tube retainers 3886957, O-ring 944124, guide, brackets, and dipstick components while servicing this fitting. Confirm the tube is fully seated and correctly supported according to the applicable Volvo Penta lubricating-system diagram after installation.
Related Parts in This Assembly
- Oil dipstick tube: 3593955 — used with this nipple in the same dipstick tube assembly
- Oil dipstick: 21650012 — adjacent in later D4/D6 dipstick assemblies
- Tube retainer: 3886957 — retaining hardware in the same assembly
- O-ring: 944124 — sealing component in the same dipstick tube assembly
- Volvo Penta Oil Dipstick Guide 22456382 — D6 Marine Diesel
Cross-Reference Part Numbers
- OEM: 3886951
- Note: No confirmed Volvo Penta OEM superseding number identified. Do not substitute with other lubrication-system nipples (423067, 3583695) — these occupy different diagram positions.
Parts Desk Insight
This fitting is most often needed during oil sump or dipstick tube service on D4 F-series and D6 engines, where the nipple can be damaged during tube removal if it is corroded or over-torqued. The most common issue is assuming any similar-looking nipple will work — the D4/D6 lubrication system uses several different nipples at different positions, and matching by engine serial number and diagram position is the only reliable method. If the dipstick tube is being replaced, inspect 3886951 at the same service visit and replace it if there is any sign of corrosion or damage.
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
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
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.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.