Volvo Penta Fuel Line O-Ring 3850424
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Volvo Penta 3850424 is a genuine OEM O-ring used in select Volvo Penta fuel-system applications. Current parts references consistently identify this seal as a fuel line or fuel pipe end O-ring, especially around GXi fuel-cell and fuel-pump adapter connections, where a properly matched seal is critical for maintaining fuel-system integrity during service.
Key Features
- Genuine Volvo Penta OEM part number 3850424.
- Commonly referenced as a fuel line connection or fuel pipe end O-ring.
- Associated with GXi fuel-cell and fuel-pump adapter style applications.
- Approximate size references show about 7/16 inch outside diameter, 3/8 inch inside diameter, with one listing also showing 9.54 mm.
Engine Compatibility
Current supportable references connect 3850424 to a variety of Volvo Penta gasoline fuel-system applications, including GXi-family fuel-cell usage and multiple gasoline models such as 3.0GXi-J, 4.3Gi-200-R, and several 4.3GL and 4.3GS configurations in fuel-system or intake-manifold related diagrams. Because these references point to specific assemblies rather than a single universal engine fit, this O-ring should be matched by engine model, fuel-system layout, and serial number before ordering.
Serial Number Fitment Notice
Volvo Penta fuel-system parts can vary by engine family, production break, and component assembly. Match part number 3850424 against your engine serial number and the correct fuel-system schematic to confirm the exact sealing point before ordering.
When This Part Needs Replacement
Replace this O-ring anytime the related fuel pipe, fuel adapter, or fuel-system connection is opened for service, or when the original seal shows flattening, cracking, swelling, hardening, or signs of fuel seepage. Replacing the seal during disassembly is usually the safer option than reusing an older compressed O-ring in a fuel connection.
Installation Notes
Confirm the old O-ring matches the new OEM seal before installation, and inspect the mating fitting for scoring, debris, or damage. Install on a clean surface and avoid twisting or over-stretching the O-ring during assembly. Because this part is used in fuel-system connections, proper seating matters more than appearance alone.
Alternate/Superseded Part Numbers
The references reviewed identify 3850424 as the active Volvo Penta OEM number. Current cross-reference listings also associate it with certain Johnson Evinrude OMC fuel-system assemblies for reference purposes, but Volvo Penta fitment should still be confirmed from the correct engine parts breakdown.
Parts Desk Insight
With fuel-line O-rings, the easy mistake is assuming a close visual match is good enough. On Volvo Penta fuel-system parts, confirming the exact connection point and serial-based application usually saves a second teardown for a minor seep or poor seal.
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Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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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.
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Item must be in new, unused condition
Product must be in its original packaging
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Important:
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