Mercury Outboard Coils and CDM's
Your outboard's ignition coils or CDMs (Capacitor Discharge Modules) provide a high voltage pulse to your Spark Plugs.
Ignition Coils get their voltage from the Switchbox.
CDM's are essentially ignition coils with built-in switchboxes.
Order the correct Coils or CDMs for your motor.
Use the link below to access the Parts Catalog.
Use your Engine Serial Number to confirm the correct coil or CDM.
PARTS CATALOG
After you have looked up the correct coil from using the link above,
Order from the list below or email us with your request or questions.
Please note: Prices listed were accurate as of Jan 2013 but are subject to change.
Not all prices shown in the PARTS CATALOG will be the same as the factory tends to update prices during the year.
A faulty or failing coil or CDM can cause one or more symptoms.
1. Engine has no or weak spark on one or more cylinders.
2. Engine is hard to start.
3. Engine is low on power or has a "miss".
4. Engine stalls frequently.
Coils and CDMs fail!
Stators can fail for one or more of the following reasons.
1. Age! Old coils fail from internal failures from temperature fluctuations and/or corrosion.
2. Overheating. An engine that is running too hot will "overheat" the coil.
3. Bad spark plugs and/or plug wires.
4. Bad, loose or corroded ground connection(s) to the coil
First... properly diagnose your ignition before assuming your coil is faulty.
The coils have a very high voltage output so use extreme caution not to touch the plug wire while the engine is running.
Invest in a good Spark Tester to check your coil output.
A good CDM might not spark if another one of the CDMs is faulty. The faulty CDM might spark fine!
Read your Outboard Service Manual BEFORE attempting to replace your coils or CDMs.
We do NOT recommend installing aftermarket parts.