Volvo Penta Ignition Module 3858984

Volvo Penta 3858984 is a genuine OEM ignition module used in Volvo Penta gasoline-engine ignition service. Current public parts sources consistently identify this number as a module, and the strongest public application trail places it in the Ignition 5.0 group across several Volvo Penta V8 gasoline models. Current aftermarket cross-reference sources also describe it as a Delco-style ignition module used on MPI and GXi-era V6 and V8 marine engines, mounted on the ignition coil bracket.

Key Features

• Genuine Volvo Penta OEM ignition module, part number 3858984.
• Strongest current public fitment trail places it in Volvo Penta Ignition 5.0 applications.
• Current public application references associate it with 5.0GXi, 5.0OSi, 5.7Gi, 5.7GXi, and 5.7OSi / OSXi families.
• Current aftermarket cross-reference coverage describes it as an ignition module for V6 & V8 MPI / GXi Delco HVS ignition systems and notes it mounts on the ignition coil bracket.
• One current public listing shows approximate weight around 0.040 kg.

Engine Compatibility

The strongest supportable fitment trail for Volvo Penta 3858984 is with Volvo Penta gasoline-engine ignition systems in the 5.0L and 5.7L families. Current public application references specifically list 5.0GXi-B, 5.0GXi-BF, 5.0OSi-B, 5.0OSi-BF, 5.7Gi-B, 5.7Gi-BF, 5.7GiL-B, 5.7GiL-C, 5.7GXi-C, 5.7GXi-CF, 5.7OSi-A, 5.7OSi-AF, and 5.7OSXi / 5.7OSXi-AF. Broader aftermarket coverage also points to related V6 and V8 MPI / GXi ignition applications, but 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 3858984 against your engine serial number and the correct Volvo Penta ignition diagram before ordering, especially on MPI and GXi-era gasoline engines where ignition modules, coils, and brackets can look similar across nearby model families.

When This Part Needs Replacement

Replace this ignition module when the engine shows intermittent ignition failure, no-start symptoms tied to module failure, misfire under load, heat-related ignition dropout, or a confirmed failed module during diagnosis. It is also a smart replacement when troubleshooting an ignition system that has already ruled out the coil, cap, rotor, wiring, and basic power/ground issues. This service guidance is an inference based on the part type and its ignition-system role.

Installation Notes

Match this module to the exact Volvo Penta application before installation. The strongest public references tie it to Ignition 5.0 group applications, while current cross-reference coverage places it on the ignition coil bracket in Delco HVS ignition systems, so confirming both the part number and the serial-number-based ignition layout is the safest cross-check before ordering or reassembly. Inspect the coil bracket, electrical connectors, and surrounding ignition wiring at the same time to help avoid repeat ignition issues after service.

Alternate/Superseded Part Numbers

Use Volvo Penta 3858984 as the primary ordering number. In the current public sources reviewed, I did not find a stronger confirmed Volvo supersession trail than the active number itself. Aftermarket cross-reference sources also show related replacement references such as REC3858984 for non-OEM replacement supply, but 3858984 is the correct Volvo Penta OEM number for this listing.

Parts Desk Insight

Ignition modules are easy to mis-order because several MPI-era ignition parts can get lumped together as “the module.” 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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