# 827509A8 Mercury CDM | Genuine Used Part

🔧 Product Description

  

Genuine Mercury CDM Ignition Module - Part Number: 827509A8

  

A genuine Mercury CDM ignition module used on selected Mercury, Mariner and Force outboards. This 827509A8 module belongs to the Mercury 827509 CDM family and cross-references with later 827509A10 / 827509T7 replacement data.

  

⚙️ Key Features

  

• Genuine Mercury CDM ignition module

• Correct OEM part number 827509A8

• Cross-references with 827509A9, 827509A10 and 827509T7

• 4-pin CDM-style ignition module with high-tension lead

• Match by engine serial number, connector style and original CDM number

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 827509A1 earlier Mercury CDM reference

• 827509A3 earlier Mercury CDM reference

• 827509A4 earlier Mercury CDM reference

• 827509A7 earlier Mercury CDM reference

• 827509A8 Mercury CDM module reference

• 827509A9 related Mercury CDM reference

• 827509A10 later Mercury CDM reference

• 827509T7 later Mercury CDM reference

  

OEM / Related Numbers:

  

• 827509A8

• 827509-A8

• 827509A9

• 827509A10

• 827509T7

• 827509A7

• 827509A4

• 827509A3

• 827509A1

• 114-7509

• AMW-3454

• CDM module

• CDM ignition coil

• Ignition coil module

• Capacitor discharge module

  

Aftermarket / Verified Equivalents:

  

• CDI Electronics: 114-7509

• Mallory: 9-23202

• Recmar: REC827509A10

• Aftermarket replacement for 827509A1 / A3 / A4 / A7 / A8 / A9 / A10 / T7

  

🚤 Compatibility

  

Commonly used on:

  

• Mercury / Mariner CDM ignition systems

• Force CDM ignition systems

  

Typically suits:

  

• Engine models:

• Mercury 30HP 2-cylinder - 1996-2007, serial 0G380075 to 0T979999

• Mercury 30HP 3-cylinder - 1998-2001, serial 0G590000 to 0T999999

• Mercury 40HP 2-cylinder - 1996-2005, serial 0G380075 to 0T999999

• Mercury 75HP 3-cylinder / CDM family applications where original CDM number matches

• Mercury 100HP 4-cylinder - 1996-2000, serial 0G438000 to 0G965520

• Mercury 125HP 4-cylinder CDM applications where original module is 827509A8 / A10 family

• Mercury 200HP 6-cylinder - 2000-2005, serial 0G960500 to 1B226999

• Mercury / Mariner 30HP-300HP CDM applications from approximately 1996-2007 where this CDM family is specified

• Force 40HP - 1996-1999 CDM applications

• Force 50HP - 1996-1999 CDM applications

• Force 75HP - 1996-1999 CDM applications

• Force 90HP - 1996-1999 CDM applications

• Force 120HP - 1996-1999 CDM applications

  

• HP Range: Mercury / Mariner 30HP - 300HP; Force 40HP - 120HP

• Engine Type: Mercury / Mariner / Force CDM ignition system

• Year Range: approximately 1996 - 2007 for Mercury / Mariner; 1996 - 1999 for Force

• Serial Note: Match by exact Mercury / Mariner / Force serial number, original CDM suffix, connector style, lead length and ignition-system diagram before installation.

  

🔌 Function

  

The CDM receives stator and trigger signals, stores ignition energy and fires the spark plug at the correct timing point.

  

Common signs of failure:

  

• No spark on one cylinder

• Weak or intermittent spark

• Hard starting

• Engine starts then loses spark

• Misfire under acceleration

• Heat-related ignition dropout

• Cylinder fault follows the CDM when swapped

• Damaged high-tension lead or corroded module connector

  

📦 Condition

  

• Genuine used part

• Removed from running engine where applicable

• In good working condition unless otherwise stated

## Details

- **Price:** 40.0 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 | 40.00 AUD | In stock |

## Images

- 827509A8 Mercury CDM | Genuine Used Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/827509a8-mercury-cdm-genuine-used-part)
> Updated: 2026-07-02