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CDM Ignition Coil for Mercury 30HP 40HP 50HP 55HP 60HP Outboard
CDM Ignition Coil for Mercury 30HP 40HP 50HP 55HP 60HP Outboard
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Product Overview
Replacement CDM ignition coil / capacitor discharge module for selected Mercury and Mariner outboard engines using a compatible CDM-style ignition system.
Designed for selected 30HP, 40HP, 50HP, 55HP, and 60HP 2-stroke outboard applications, this unit combines ignition-module and secondary ignition-coil functions in a single assembly.
The unit features approximately 73.7mm / 2.90 in mounting-hole spacing and a 152.4mm / 6 in ignition wire for additional fitment verification.
Before ordering, verify the engine horsepower, model/serial number, original CDM part number, mounting dimensions, electrical connections, and original module appearance.
Product Compatibility
| Make | Engine | Engine Type | Fitment Notes |
|---|---|---|---|
| Mercury / Mariner | 30HP | 2-Stroke | Selected CDM ignition applications |
| Mercury / Mariner | 40HP | 2-Stroke | Verify engine serial number and original CDM |
| Mercury / Mariner | 50HP | 2-Stroke | Selected CDM-equipped models |
| Mercury / Mariner | 55HP | 2-Stroke | Verify OEM number |
| Mercury / Mariner | 60HP | 2-Stroke | Selected compatible applications |
Fitment varies by year, cylinder configuration, and engine serial number. Horsepower alone should not be used to confirm compatibility.
Related OEM Cross-Reference Numbers
This CDM design is commonly associated with the Mercury ignition-module family that includes references such as:
- 827509A1
- 827509A3
- 827509A4
- 827509A7
- 827509A8
- 827509A9
- 827509A10
- 827509T7
- 114-7509
Important: These are related cross-reference numbers for this CDM family. Confirm the number on the original module and compare the replacement physically before ordering.
Specifications
| Specification | Details |
|---|---|
| Product Type | CDM Ignition Coil / Ignition Module |
| Ignition Type | Capacitor Discharge Module (CDM) |
| Application | Mercury / Mariner Outboard |
| Listed Horsepower | 30HP–60HP |
| Engine Type | Selected 2-Stroke Applications |
| Mounting Hole Spacing | Approx. 73.7 mm / 2.90 in |
| Ignition Wire Length | Approx. 152.4 mm / 6 in |
| Condition | New |
| Package Quantity | 1 CDM Ignition Coil |
Key Features
- CDM Ignition Design: Combines capacitor-discharge ignition-module and secondary ignition-coil functions in one assembly.
- Mercury Outboard Application: Designed for selected Mercury/Mariner 30HP–60HP CDM-equipped engines.
- 73.7mm Mounting Reference: Provides an important physical measurement for comparison with the original module.
- 6-Inch Ignition Lead: Approximately 152.4mm wire length for compatible installations.
- Marine Replacement Component: Designed for use as a replacement ignition component in compatible outboard applications.
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Fitment FAQ
Will this part fit my specific model and year?
This CDM ignition coil is intended for selected Mercury/Mariner 30HP, 40HP, 50HP, 55HP, and 60HP 2-stroke outboards using a compatible CDM ignition system.
Mercury used different ignition components across engine years and serial ranges, so horsepower alone does not confirm fitment.
Do I need to match the OEM part number?
Yes. Matching the original CDM part number is strongly recommended.
Related CDM references include 827509A10, 827509T7, 827509A7, 827509A4, and other numbers within the same ignition-module family.
You should also compare the mounting dimensions, connectors, ignition lead, and physical appearance.
What models or situations does this part not fit?
Do not assume compatibility with:
Every Mercury 30HP–60HP outboard
Mercury 4-stroke engines based only on horsepower
Engines using a conventional standalone ignition coil rather than this CDM design
Modules with different electrical connections
Applications with different mounting-hole spacing
Engines requiring a different OEM CDM number
The engine serial number and original ignition module provide more reliable fitment information than horsepower alone.
What should I check before ordering?
Confirm:
Mercury / Mariner engine model
Engine horsepower
2-stroke engine configuration
Engine serial number
Original CDM/OEM number
Approx. 73.7mm mounting-hole spacing
Approx. 152.4mm ignition wire length
Electrical connector configuration
High-tension lead connection
Original CDM appearance
Compare the product photos with the original module before purchase.