Volvo Penta D3 Oil Return Pipe Gasket 31251456 | OEM Turbocharger Oil System
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Part Information
- Part Number: 31251456
- Brand: Volvo Penta
- Official Product Type: Gasket — Engine Oil Return Pipe
- Supersedes: No supersession on record
- Replaced By: No current supersession on record
- Diagram Position: D3 Lubricating & Oil System — Oil return pipe connection, used alongside oil return pipe 21098797 and related return-line components
Overview
The Volvo Penta 31251456 is a genuine OEM flat gasket used at the oil return pipe connection in the lubricating and oil system of Volvo Penta D3 marine diesel engines. It seals the joint at the oil-return pipe and is a required replacement any time this connection is separated for service. This gasket works alongside the nearby sealing ring 31251439, which serves a different position in the same oil-return assembly — the two parts are not interchangeable.
Compatible Applications
- Volvo Penta D3-110I-D
- Volvo Penta D3-110I-H
- Volvo Penta D3-140I-E
- Volvo Penta D3-200A-G
- Additional D3 configurations where the oil-return pipe assembly specifies 31251456
Confirm your complete engine model and serial number against the Volvo Penta D3 lubricating and oil system diagram before ordering. The D3 oil-return system uses both gasket 31251456 and sealing ring 31251439 at different positions — verify the exact diagram position before ordering.
Serial Number Requirements
Always confirm your engine model and serial number using the Volvo Penta D3 lubricating and oil system parts diagram. The oil-return assembly uses multiple sealing components at nearby positions — matching the exact diagram position is the most reliable way to ensure you order the correct part.
System
Lubrication System — Turbocharger Oil Return / Oil Return Pipe Connection
Related Parts — D3 Oil Return Assembly
The following components are part of the D3 oil-return assembly and should be inspected during gasket service:
- Oil Return Pipe — 21177977
- Oil Return Pipe — 21098797
- Oil Return Pipe — 21294908
- Hose — 3593534
- Sealing Ring — 31251439 (separate position in the same oil-return system)
Dimensions & Weight
- Weight: Approximately 0.05 kg
- Gasket dimensions per Volvo Penta D3 lubricating and oil system specification
When This Part Needs Replacement
Replace the gasket whenever the oil-return pipe joint is separated for service, or if inspection reveals any of the following:
- Oil seepage around the return pipe connection
- Compression damage, distortion, or deterioration of the sealing surface
- Leakage following turbocharger or oil-return pipe service
Gaskets should always be replaced rather than reused once the joint has been disturbed.
Installation Notes
Clean both mating surfaces thoroughly before installing the new gasket. Ensure the oil-return pipe seats squarely before tightening the fasteners. Inspect the return pipe, hose connections, and surrounding hardware for wear or damage during service.
Technical FAQ
Q: What is the difference between 31251456 and 31251439?
A: 31251456 is the flat gasket at the oil-return pipe connection. 31251439 is the separate metal sealing ring used at a different position in the same oil-return assembly. They are not interchangeable — confirm the exact diagram position before ordering.
Q: Should I replace this gasket every time I remove the oil-return pipe?
A: Yes. Gaskets should always be replaced when the joint is disturbed. Reusing a compressed or damaged gasket risks oil seepage after reassembly.
Q: How do I confirm this is the right gasket for my engine?
A: Match your engine model and serial number to the Volvo Penta D3 lubricating and oil system diagram, and confirm the gasket position at the oil-return pipe connection.
Parts Desk Insights
The most common issue with this part is customers confusing it with the nearby sealing ring 31251439 — both are in the D3 oil-return assembly, but they serve different sealing positions and are not interchangeable. The diagram is the only reliable way to confirm which one is needed. At $8.80, this is one of those parts worth including automatically any time a customer is ordering oil-return pipe components for the D3 — the cost of a repeat job far outweighs the cost of the gasket.
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
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.