The product is a set of 4 NGK spark plugs with the model number BPR6ES. They are equivalent to BP 6 ES and BP6ES, with interchange part numbers 739 38022 135 and 7333. The spark plugs are designed for placement on the left side of the vehicle and are a reliable choice for ignition systems in cars and trucks. NGK is a trusted brand known for producing high-quality spark plugs that ensure optimal performance and durability.