The Denso 3444 SC20HR11 Spark Plug is a high-quality replacement for a damaged or exhausted original part. It features special engineering and construction for long-lasting service life and comes 100 percent pre-fired to meet rigorous manufacturer standards. Machine-rolled threads help prevent seizing and cross-threading during installation. Purified alumina powder insulator is incorporated for enhanced strength and conductivity. This versatile auto spark plug fits a wide selection of vehicle makes and models. Denso 3444 SC20HR11 Spark Plug:
Iridium components and copper core for efficient heat conductivity and heat dispersion
Special engineering and construction for long-lasting service life
Machine-rolled threads to prevent seizing or cross-threading during installation and removal
100% pre-fired to meet high quality standards
Purified alumina powder insulator for strength and conductivity