# 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

  

🔄 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

  

🚤 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

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 120.0 AUD
- **Vendor:** Sawley's Auto and Marine
- **Tags:** Sawley’s AAM Used Parts – Electronic Components | ECU CDI & Electrical Parts

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 120.00 AUD | In stock |

## Images

- 3861985 Volvo Coil | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/3861985-volvo-coil-genuine-used-part)
> Updated: 2026-06-29