Consisting of a laminated magnetized iron core surrounded by two windings of copper wire, the ignition coil converts the car battery’s relatively low voltage to thousands of volts. The ignition coil voltage from the battery is inputted into the primary winding of high gauge copper wire to create a magnetic field; this changing magnetic field in the iron core induces a much larger voltage in the secondary winding.
- Premium copper in both primary and secondary windings
- High-voltage enamel coating for premium insulation
- Designed and produced under the strictest quality control processes
- Thermal shock cycle testing to ensure reliability in all road conditions
- Meet or exceed OE specifications for fit, form, and function
Most popular ignition coil products
Multi-pack Complete Replacement solution
When the first coil fails, the others are not far behind.
Covering today’s most popular vehicles, Spectra Premium’s Ignition Coil Multipacks offer a brand new coil for each cylinder, providing full restoration and savings per unit.
Common Ignition Coil Failure Symptoms
- Direct sign of unit failure will be a severe drop in output voltage
- Lower gas mileage
- Loss of power
- CEL illumination
Common Causes of Failure
Damaged wiring insulation or a bad spark plug can potentially lead to coil damage. Excessive resistance from a related component will cause output voltage to increase higher than the insulation’s functional limits. Certain older technology types can also be affected by environmental or road conditions.