Volvo Penta Fuel System Grommet 3858345
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Volvo Penta OEM Fuel System Grommet – Part No. 3858345
| Part Number | 3858345 |
| Brand | Volvo Penta |
| Component Type | Grommet |
| System | Fuel Pump / Fuel System Assembly |
| Diagram Position | Schematic Key 4 – Fuel System Diagram (5.0GL-C) |
| Quantity Per Assembly | 1 |
| Weight | Approx. 4 g (0.004 kg) |
| Superseded / Replaced By | No documented supersession — 3858345 remains the current active OEM number |
Compatible Applications
Confirm fitment using your engine serial number and the fuel-system parts diagram before ordering. Engine displacement alone does not guarantee correct fit.
- Volvo Penta 5.0GL-C (strongest diagram-confirmed application)
- Selected 5.0GL A–E configurations
- 4.3L gasoline engine packages (verify by diagram)
- 5.7L GL / GS configurations (verify by diagram)
- Selected Volvo Penta V6 and V8 gasoline sterndrive engines
When to Replace
Replace this grommet when the rubber is cracked, hardened, swollen, torn, or no longer seating the fuel-system component securely. It is also good practice to replace it any time the adjacent fuel pump, pipe, or bracket assembly is removed for service.
Installation Notes
Verify the part number against your fuel-system diagram before installation. Install into a clean, undamaged mounting point and confirm the related component is fully supported and seated before returning the engine to service. Inspect the surrounding fuel pump, pipes, brackets, and mounting hardware while the assembly is apart.
Related Parts
- Volvo Penta 23021428 Low-Pressure Electric Fuel Pump – GL / GS Gasoline Engines
- Sierra Marine 18-7268 Mechanical Fuel Pump – MerCruiser / Volvo Penta V6 V8
Technical FAQ
Can I identify the correct grommet by measuring the old one?
Rubber components can deform over time, so dimensional comparison of a worn grommet is unreliable. Match by part number and diagram position instead.
Does this fit all 5.0L Volvo Penta engines?
No. Volvo Penta used several fuel-pump and pipe arrangements across 5.0L production runs. The 5.0GL-C is the clearest confirmed application; other 5.0L variants should be verified by serial number and diagram.
Is 3858345 still an active part number?
Yes. Current OEM references show no documented supersession or replacement number for this grommet.
Parts Desk Insights
This grommet is most commonly needed during fuel-pump assembly service and is easy to overlook until the old rubber starts allowing unwanted movement or vibration in the fuel line. Matching the exact diagram position — not just engine displacement — is the most reliable way to confirm the right part before ordering.
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.