Volvo Penta Fuel System Grommet 3858345

Volvo Penta OEM Fuel System Grommet Part No. 3858345

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 AE 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.