Premium Spark Plugs for Optimal Engine Performance
High-quality iridium core ensures superior ignition efficiency and extended lifespan, reducing replacement frequency. Precision-engineered copper electrode enhances heat dissipation for consistent performance under extreme conditions. Advanced ceramic insulator prevents voltage leakage, maintaining stable combustion in high-temperature environments. Multi-angle ground electrode design improves fuel efficiency and reduces emissions. Perfect for automotive repairs, fleet maintenance, and performance tuning. Compatible with GM models and universal fit for various vehicles requiring 41-110, 41-156, SP520, SP546, and other listed codes. Bulk pricing available for workshops and wholesalers—stock up on durable, high-performance plugs at unbeatable global wholesale rates.