The NGK 1637 Laser Iridium Spark Plug - ILFR5B-11 is engineered for superior ignition performance and longevity. Its laser-welded iridium tip delivers a strong, precise spark, enhancing fuel combustion and ensuring reliable engine starts. This spark plug is designed to handle high temperatures and resist erosion, extending its service life and reducing the need for frequent replacements. Suitable for modern engines, the ILFR5B-11 improves fuel efficiency, promotes smooth engine operation, and helps reduce emissions, making it an ideal choice for those seeking optimal engine performance and reliability.

Part number: ILFR5B-11