# 339-7370 832757A4 Mercury Coil | Genuine Used Part

🔧 Product Description

  

Genuine Mercury / Mariner Ignition Coil - Part Numbers: 339-7370 / 832757A4

  

A genuine Mercury ignition coil used across selected Mercury and Mariner two-stroke outboard ignition systems. This coil belongs to the long-running 339-7370 / 339-832757A4 family and cross-references with CDI Electronics 184-0001.

  

⚙️ Key Features

  

• Genuine Mercury / Mariner ignition coil

• Correct Mercury coil family references 339-7370 and 339-832757A4

• Ring-terminal style replacement family in aftermarket data

• Used on selected 2-cylinder, 3-cylinder, 4-cylinder and V6 Mercury / Mariner outboards

• Match by coil terminal type, mounting style, lead arrangement and ignition diagram

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 338-4774A1 earlier Mercury ignition coil reference

• 338-4995A1 related Mercury ignition coil reference

• 338-4995A2 related Mercury ignition coil reference

• 339-7370A2 related Mercury ignition coil reference

• 339-7370A6 related Mercury ignition coil reference

• 339-7370A8 related Mercury ignition coil reference

• 339-7370A13 related Mercury ignition coil reference

• 339-7370A16 related Mercury ignition coil reference

• 339-7370A17 related Mercury ignition coil reference

• 339-7370A19 related Mercury ignition coil reference

• 339-7370A23 related Mercury ignition coil reference

• 339-7370B13 related Mercury ignition coil reference

• 339-832757A3 related Mercury ignition coil reference

• 339-832757A4 Mercury ignition coil reference

• 339-832757B4 related Mercury ignition coil reference

• 8M0219430 related later replacement reference in aftermarket listings

  

OEM / Related Numbers:

  

• 339-7370

• 3397370

• 339-7370A2

• 339-7370A6

• 339-7370A8

• 339-7370A13

• 339-7370A16

• 339-7370A17

• 339-7370A19

• 339-7370A23

• 339-7370B13

• 339-832757A4

• 832757A4

• 339-832757A3

• 339-832757B4

• 8M0219430

• Ignition coil

• Mercury coil

• Mariner coil

  

Aftermarket / Verified Equivalents:

  

• CDI Electronics: 184-0001

• Aftermarket replacement for 339-7370A-series / 339-832757A4 coil family

• Mercury / Mariner ring-terminal ignition coil replacement family

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury / Mariner two-stroke outboard ignition systems

  

Typically suits:

  

• Engine models:

• Mercury / Mariner 6HP - 40HP 2-cylinder applications, approximately 1970-2006

• Mercury / Mariner 45HP - 90HP 3-cylinder applications, approximately 1976-1997

• Mercury / Mariner 45HP - 125HP 4-cylinder applications, approximately 1976-1997

• Mercury / Mariner 90HP - 225HP 6-cylinder applications, approximately 1976-2000

• Mercury / Mariner outboards where the ignition diagram specifies 339-7370A-series or 339-832757A4 coil family

  

• HP Range: commonly 6HP - 225HP depending on engine family and cylinder count

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

• Year Range: approximately 1970 - 2006 depending on model family

• Serial Note: Match by exact Mercury / Mariner serial number, ignition coil terminal type, coil mounting style, plug lead arrangement and original coil number before installation.

  

🔌 Function

  

The ignition coil converts ignition-system voltage into high-voltage spark for the spark plug.

  

Common signs of failure:

  

• No spark on one cylinder

• Weak or intermittent spark

• Hard starting

• Rough idle

• Misfire under load

• Loss of power

• Heat-related ignition dropout

• Spark returns when a known-good coil is fitted

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 25.0 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 | 25.00 AUD | In stock |

## Images

- 339-7370 832757A4 Mercury Coil | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/339-7370-832757a4-mercury-coil-genuine-used-part)
> Updated: 2026-07-05