Spark Plugs

Spark plugs are a vital component of internal combustion engines, responsible for igniting the air-fuel mixture within the engine cylinders. Found in gasoline, diesel, and natural gas engines across passenger cars and commercial vehicles, these parts deliver the high-voltage spark needed for combustion. Spark plugs consist of a central electrode, an insulator, a metal shell, and a ground electrode - all carefully engineered for efficient heat dissipation and reliable performance. Variations exist to suit different engine types and performance levels, impacting fuel economy and emissions. Examples in our assortment include MAN spark plugs (MPN 51.25923-0052, 51.25923-0068) and Bosch plugs (MPN 0242255508), as well as options specifically for Mercedes-Benz Trucks. Proper spark plug function is critical for optimal engine operation and longevity.