Premium IFR7U-4D Spark Plug for Heavy-Duty Engines
High-performance iridium alloy tip ensures superior ignition efficiency and extended lifespan, ideal for demanding truck and bus engines. Precision-engineered ceramic insulator resists extreme heat (up to 1600°F) and prevents voltage leakage. Specially designed for natural gas engines, offering stable combustion and reduced emissions in commercial fleets. CNC-machined steel shell with anti-corrosion coating guarantees durability in harsh conditions. Wholesale-ready packaging, optimized for bulk procurement. Trusted by global distributors for OEM-grade quality at unbeatable prices. Elevate engine performance with factory-direct reliability.