NGK ILTR5A-13G 3811 Spark Plug Iridium ILTR5A13G

The NGK ILTR5A-13G 3811 Iridium spark plug is engineered for superior ignition and durability across a wide range of engines. Built by NGK, a pioneer in spark plug technology since the 1930s, this 14mm diameter plug uses an iridium center electrode for exceptional wear resistance and reliable performance under high heat and pressure. Designed to meet demanding manufacturer specifications, the ILTR5A-13G delivers efficient combustion, smoother starts, and reduced misfires over extended service intervals. Its proven construction supports automotive, motorcycle, marine, and other applications, reflecting NGK’s commitment to quality and technology. With thousands of plug types in production, this model stands out for longevity, consistent sparks, and trusted reliability in challenging operating conditions.