Spark plugs are a vital component of gasoline and some diesel engines, initiating combustion within the engine cylinders. Located in the cylinder head, these parts deliver a high-voltage spark to ignite the air/fuel mixture, enabling the engine to produce power. Spark plugs are constructed with a central electrode, a ground electrode, and a ceramic insulator, designed to withstand extreme temperatures and pressures. Correct spark plug operation ensures efficient combustion, optimal engine performance, and reduced emissions. This selection includes spark plugs for a wide range of passenger cars and commercial vehicles, such as those used in Mercedes-Benz Trucks and MAN engines. Examples include Bosch spark plugs with part numbers 0242225580, 0242060501, and 81903106018 for MAN applications, as well as Bosch 3397011549.