The product is a Bosch spark plug with the manufacturer part number 4220, specifically the WR9DP model. This spark plug is designed for use in ignition systems of cars and trucks, providing the necessary spark for combustion in the engine. Bosch is a well-known brand in the automotive industry, known for producing high-quality and reliable automotive components. The WR9DP spark plug is likely designed for specific make and models of vehicles, offering efficient and effective ignition performance.