# 8037041 Mercury Coil | Genuine Used Part

🔧 Product Description

  

Genuine Mercury CD Unit / Ignition Coil Module - Part Number: 8037041

  

A genuine Mercury CD unit / ignition coil module used on selected Mercury and Mariner small two-cylinder outboards. This ignition component controls and delivers spark output for compatible 6HP, 8HP and 9.8HP two-stroke international-model engines.

  

⚙️ Key Features

  

• Genuine Mercury ignition CD unit

• Correct Mercury part number 8037041

• Related current OEM reference 803704T01

• Used on selected 6HP, 8HP and 9.8HP two-cylinder Mercury / Mariner engines

• Match by original CD unit number, engine serial range and electrical connector layout

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 803704T01 later Mercury CD unit reference

• 8037041 earlier / short-form Mercury CD unit reference

  

OEM / Related Numbers:

  

• 8037041

• 803704T01

• 803704-T01

• CD unit

• CDI coil unit

• Ignition coil module

• Ignition CD unit

  

Aftermarket / Verified Equivalents:

  

• Aftermarket replacement for 8037041 / 803704T01

• Tohatsu / Nissan related reference: 3B2-06060-0

• Tohatsu / Nissan related reference: 3B2-06160-0

• Tohatsu / Nissan related reference: 3B2-06170-0

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury / Mariner two-cylinder small outboard ignition systems

  

Typically suits:

  

• Engine models:

• Mercury 6HP 2-cylinder two-stroke International - serial 0N027903 to 0N055109

• Mercury 6HP 2-cylinder International - serial 0N055110 and up

• Mercury 8HP 2-cylinder two-stroke International - serial 0N027903 to 0N055109

• Mercury 8HP 2-cylinder International - serial 0N055110 and up

• Mercury 8 SeaPro 2-cylinder International - serial 0N014717 to 0N055109

• Mercury 8 SeaPro 2-cylinder International - serial 0N055110 and up

• Mercury 9.8HP 2-cylinder International - serial 0N007788 to 0N055109

• Mercury 9.8 SeaPro 2-cylinder International - serial 0N055110 and up

• Mercury 9.9HP 2-cylinder International - serial 0N260037 and up

  

• HP Range: 6HP - 9.9HP

• Engine Type: Mercury / Mariner two-cylinder outboard ignition system

• Year Range: serial-number controlled

• Serial Note: Match by exact Mercury serial number, original CD unit number, connector style and electrical-system diagram before installation.

  

🔌 Function

  

The CD unit / ignition coil module stores and releases ignition energy to create spark at the correct timing point for the engine.

  

Common signs of failure:

  

• No spark

• Weak or intermittent spark

• Hard starting

• Engine starts then cuts out

• Misfire under load

• Spark returns when a known-good CD unit is fitted

• Heat-related ignition failure

• Corroded or damaged ignition module connectors

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 50.0 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 | 50.00 AUD | In stock |

## Images

- 8037041 Mercury Coil | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/8037041-mercury-coil-genuine-used-part)
> Updated: 2026-07-02