Volvo Penta Ignition Coil 3859078
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Volvo Penta 3859078 is a genuine OEM ignition coil used in Volvo Penta gasoline-engine ignition service. Current Volvo Penta parts sources consistently identify it as an ignition coil, and the strongest public fitment trail ties it to Volvo Penta 8.1L gasoline applications in the ignition-system group. Public Volvo-style parts diagrams also show this coil in an ignition assembly where the suggested quantity is eight, which fits its role in V8 coil-per-cylinder ignition layouts.
Key Features
- Genuine Volvo Penta OEM ignition coil, part number 3859078.
- Current public fitment references center on Volvo Penta 8.1Gi / 8.1GXi gasoline engines and related variants.
- Public Volvo-style ignition diagram references show suggested quantity: 8, consistent with V8 ignition-system service.
- Current product listings show approximate weight around 0.56 lb.
Engine Compatibility
The strongest supportable fitment trail for Volvo Penta 3859078 is with 8.1L Volvo Penta gasoline engines, especially the 8.1Gi and 8.1GXi families. Current public fitment pages list many 8.1 variants including 8.1Gi-C through H, 8.1GiE variants, 8.1GiI variants, and 8.1GXi-B / C families. Because ignition-system configurations can vary by engine version and serial-number range, the safest fitment standard is the exact Volvo Penta serial-number-based parts lookup for the engine being serviced.
Serial Number Fitment Notice
Fitment can vary by engine family, ignition-system version, and serial-number range. Confirm Volvo Penta part number 3859078 against your engine serial number and the correct Volvo Penta ignition diagram before ordering, especially on 8.1L applications where coil and ignition-component layouts may differ across production ranges.
When This Part Needs Replacement
Replace this ignition coil when the engine shows misfire, weak spark, rough running, intermittent ignition faults, or a confirmed failed coil during diagnosis. It is also a smart replacement when troubleshooting a single dead cylinder or unstable ignition performance on a coil-equipped gasoline engine. This service guidance is based on the part type and its ignition-system role.
Installation Notes
Match this coil to the exact Volvo Penta application before installation. The strongest public references tie it to 8.1L Volvo Penta ignition systems, so confirming both the part number and the serial-number-based ignition breakdown is the safest cross-check before ordering or reassembly. Inspect the related connectors, boots, and surrounding ignition components at the same time to help avoid repeat ignition issues after service.
Alternate/Superseded Part Numbers
Current public cross-reference sources also associate Volvo Penta 3859078 with R117012 in the same ignition-coil family. Use 3859078 as the primary Volvo Penta ordering number for this listing.
Parts Desk Insight
Ignition coils are easy to mis-order when a V8 platform has multiple ignition versions across the production run. Matching the exact Volvo Penta serial-number-based ignition breakdown first is usually much safer than ordering by engine size alone.
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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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