DENSO 3440 Iridium Long-Life Spark Plug

The DENSO 3440 Iridium Long-Life spark plug delivers superior ignition performance and extended service life for demanding automotive applications. Featuring an ultra-fine 0.4mm iridium center electrode, this premium spark plug provides a more focused spark for improved combustion efficiency, better fuel economy, and reduced emissions.

Key Features:

• Iridium center electrode for exceptional durability and longevity
• Platinum ground electrode for enhanced wear resistance
• 360-degree laser welding for superior construction integrity
• Copper core for excellent heat dissipation and thermal performance
• Ribbed insulator design prevents flashover and misfires
• Manufactured to strict OE performance, durability, and emissions standards

DENSO's iridium spark plugs are designed to maintain stable ignition performance over extended service intervals, making them an excellent choice for both OE replacement and performance upgrades. The advanced materials and precision engineering ensure reliable cold starts, smooth acceleration, and optimal engine performance across all operating conditions.