OEM Auto Spark Plugs

Fire Your Engine Reliably with Genuine Spark Plugs

Ever wondered how your vehicle adapts to various driving conditions, or when it might need some expert attention? Spark plugs ignite the air-fuel mixture inside combustion chambers to power your engine. These threaded components feature electrodes that create electrical sparks when supplied with high voltage from ignition coils. Vehicles like the Ford F-150 and Chevrolet Silverado depend on properly functioning spark plugs for smooth power delivery, fuel efficiency, and reliable starting in all weather conditions.

Understanding Spark Plug Operation

Each spark plug screws into the cylinder head with its center electrode extending into the combustion chamber. High voltage from ignition coils travels through the center electrode and jumps across a gap to the ground electrode, creating a spark. This spark ignites the compressed fuel-air mixture at precisely the right moment in the combustion cycle. The resulting explosion drives the piston down, creating power that turns the crankshaft.

Why Spark Plugs Deteriorate

Electrodes gradually erode from millions of sparking events, widening the gap and weakening spark intensity. Carbon deposits accumulate on insulators and electrodes, interfering with proper spark formation. Oil or coolant leaks contaminate plugs, causing misfires and fouling. Temperature extremes and combustion pressures accelerate wear. Aftermarket spark plugs often use inferior electrode metals that cannot withstand heat and electrical stress. These cheap alternatives lack precise gap dimensions and correct heat ranges, resulting in poor performance, reduced fuel economy, and potential damage to ignition coils that affects your entire ignition system reliability.

Replace Spark Plugs on Schedule

Install new spark plugs if your engine runs rough, hesitates during acceleration, or struggles to start. Poor fuel economy and check engine lights indicate potential plug problems. Most spark plugs last between 30,000 and 100,000 miles depending on plug type. Follow your owner's manual for specific replacement intervals to maintain performance and efficiency.

Get back on the road quickly with genuine components from Bob Howard PDC.