Professional Ignition Coils



Many ACDelco ignition modules feature electronically welded lead connections to help eliminate heat-stress failure or cold joints. Select ACDelco ignition modules have been laser trimmed to provide precise values and eliminate deterioration and damage.

Product Facts
Find out more about ACDelco Professional Ignition Modules and how they fit into the Starting and Charging System with the product facts below. 

FUNCTION:
Increases voltage in order for the spark plugs to ignite the air/fuel mixture. 

SIGNS OF WEAR:
Engine misfires or won't start, poor starting characteristics. 

WHAT IT DOES:
The Starting and Charging System starts the engine, maintains the battery's charge and provides power to the electrical accessories while the engine is running.