3861985 Volvo Coil | Genuine Used Part

🔧 Product Description

Genuine Volvo Penta Ignition Coil & Module Assembly - Part Number: 3861985

A genuine Volvo Penta ignition coil and module assembly used on selected GM-based petrol marine engines. This assembly supplies high-voltage ignition output and includes the coil, ignition module, cooling plate and mounting hardware in the Volvo Penta service assembly.

⚙️ Key Features

• Genuine Volvo Penta ignition coil / module assembly
• Correct Volvo Penta part number 3861985
• Includes coil and ignition module assembly components
• Used on selected 4.3L, 5.0L, 5.7L and 6.2L petrol engines
• Cross-references with MerCruiser ignition module / coil references

🚤 Compatibility

Commonly used on

• Volvo Penta GM-based petrol engine ignition systems

Typically suits

• Engine models:
• Volvo Penta 4.3GL-A
• Volvo Penta 4.3GXi-C
• Volvo Penta 4.3GXi-E
• Volvo Penta 5.0GL / 5.0Gi / 5.0GXi applications using the 3861985 ignition assembly
• Volvo Penta 5.7GL-D
• Volvo Penta 5.7GXi-D
• Volvo Penta 6.2L MPI / GXi applications using the 3861985 coil and module family
• MerCruiser 4.3L, 5.0L, 5.7L and 6.2L MPI applications using equivalent 8M0054588 / 392-863704T assembly
• HP Range: engine-calibration dependent, commonly 190HP - 375HP petrol applications
• Engine Type: GM-based petrol sterndrive / inboard ignition system
• Year Range: approximately early-2000s onward MPI / GXi ignition family applications
• Serial Note: Volvo fitment must be matched by engine model, engine serial number and ignition-system diagram.

🔌 Function

The coil and module assembly converts low-voltage ignition signals into high-voltage spark output and controls ignition switching for the distributor / ignition system.

⚠️ Common Signs of Failure

• Weak or no spark
• Engine starts then cuts out when warm
• Misfire under load
• Hard starting after plugs and leads are checked
• Ignition module fault codes or timing-control faults
• Coil overheating or cracking
• Spark returns when a known-good coil/module is fitted

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 3861985 current / listed Volvo Penta ignition coil assembly reference
• 3883158 related Volvo Penta ignition module / coil reference
• 3862167 related Volvo Penta ignition module / coil reference

OEM / Related Numbers

• 3861985
• 3883158
• 3862167
• Related cooling plate: 3858985
• Related ignition module: 3858984
• Related mounting bolts: 3858986
• MerCruiser related reference: 392-863704T
• MerCruiser related reference: 863704T
• MerCruiser related reference: 8M0054588

Aftermarket / Verified Equivalents

• Sierra: 18-5465
• MerCruiser / Mercury: 8M0054588
• Aftermarket coil & module assemblies replacing 3861985 / 3883158 / 3862167
• Repower Marine / aftermarket reference family: RM33000392

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated