Volvo Penta Coil 3861985

The Volvo Penta 3861985 Coil is a genuine OEM ignition component listed by Volvo Penta as coil. Current supportable references also identify this part as an ignition coil and module assembly, commonly supplied with the ignition coil, ignition module, heat sink, and mounting bracket as one service unit. It is used in selected Volvo Penta gasoline-engine ignition systems where dependable spark delivery and correct module integration are important for reliable starting and engine performance.

Key Features

• Genuine Volvo Penta OEM part
• Part number: 3861985
• Factory replacement ignition coil / module assembly
• Common reference weight: approximately 1.072 kg
• Commonly supplied as a complete mounted assembly with coil, module, heat sink, and bracket

Engine Compatibility

Commonly associated with selected Volvo Penta gasoline applications including 4.3GXi, 4.3OSi, 5.0GXi, 5.0OSi, 5.7GXi, and related fuel-injected GM-based marine engine families. Supportable references also connect this assembly to late-model 4.3L, 5.0L, and 5.7L Volvo Penta gasoline engines using HVS or Delco-style ignition-system layouts. Exact fitment can still vary by engine version, distributor style, and production range.

Serial Number Fitment Notice

Fitment may vary by engine model, ignition-system configuration, and production break. Always confirm compatibility by engine model and serial number before ordering. Volvo Penta directs users to identify the exact engine, shield, or drive when locating the correct spare part.

When This Part Needs Replacement

Replace this coil assembly when the original ignition coil or module has failed, is causing weak or intermittent spark, or when troubleshooting points to ignition-related symptoms such as hard starting, misfire, rough running, fault-code issues, or loss of dependable spark under load.

Installation Notes

Confirm the exact application before installation and compare the new assembly to the original ignition component during service. Inspect the related wiring, terminals, coil lead connections, mounting bracket, and surrounding ignition components so the replacement is installed into a clean, reliable ignition circuit. Matching the assembly to the correct ignition-system style is important for proper service results.

Alternate/Superseded Part Numbers

Current supportable references also show 3862167 and 3883158 as related earlier numbers associated with this coil assembly. Cross-reference use should still be confirmed by exact application before interchangeability is assumed.

Parts Desk Insight

Ignition parts can look similar, but coil-and-module assemblies are not generic. Matching by serial number and ignition-system layout is the best way to avoid repeat troubleshooting and make sure the replacement suits the exact Volvo Penta setup you are servicing.

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