OEM Auto Coils

Start Your Engine Reliably with Genuine Coils

Who needs a new car payment? Go with what you got and trust parts from Bob Howard PDC to keep it running great. Ignition coils transform your battery's low voltage into the high voltage needed to fire spark plugs. These electromagnetic devices generate thousands of volts that create sparks in combustion chambers. Vehicles like the Ford F-150 and Chevrolet Silverado require properly functioning coils to deliver smooth power, fuel efficiency, and reliable starting performance in all weather conditions.

Understanding Ignition Coil Operation

Each coil contains primary and secondary wire windings wrapped around an iron core. When electrical current flows through the primary winding, it creates a magnetic field. When this current stops suddenly, the collapsing magnetic field induces high voltage in the secondary winding. This voltage travels to spark plugs, creating the sparks that ignite the air-fuel mixture in each cylinder.

Why Ignition Coils Deteriorate

Heat from the engine compartment breaks down the coil's internal insulation over time. Vibration loosens electrical connections and cracks the housing. Oil leaks can contaminate coils, causing electrical tracking and performance problems. Worn spark plugs increase voltage demand on coils, accelerating their failure. Aftermarket coils frequently use inferior wire insulation and weaker magnetic cores that cannot handle modern engine requirements. These cheap alternatives fail prematurely and may not provide consistent spark energy, affecting fuel economy and potentially damaging your spark plugs and catalytic converter.

Signs Your Coils Need Replacement

Replace coils if your engine misfires, runs rough, or struggles to start. Reduced fuel economy and illuminated check engine lights often indicate coil problems. Your vehicle may hesitate during acceleration or lose power under load. Most ignition coils last between 80,000 and 120,000 miles, though harsh conditions can shorten their lifespan considerably.

Get back on the road in no time with genuine OEM parts from Bob Howard PDC.