Lambda sensor non-fouler This spark plug non-fouler is designed for easy installation on specified vehicles to protect spark plugs from contamination and damage.it is designed for durability and reliable performance. Direct replacement - this spark plug non-fouler is designed for easy installation to protect spark plugs from contamination and damage on specified vehicles Ideal solution-this non-fouler preserves the life of the spark plug and is a reliable replacement for an original non-fouler that has failed due to corrosion Durable construction-made of high-quality components to ensure reliable performance and long service life Reliable quality-backed by a team of product experts in the United States and over a century of automotive industry experience Color: Silver Color / Finish: Silver Material: Steel Type of spark plug seat: Tapered Spark plug wire size (mm): 18