Denso Iridium Long Life spark plugs are factory-installed by a wide range of automakers and are fast becoming the standard for today's high-tech engines. Denso has created a spark plug unlike anything on the market today. Designed for durability under the most extreme conditions, Denso's patented iridium alloy is six times harder and eight times stronger than conventional platinum. You'll enjoy more horsepower, faster and easier starts, fewer misfires under heavy loads, plus better fuel economy! Order the model and options best suited for your application.

Additional features and benefits of Denso Iridium Long Life spark plugs include:

• 0.7mm iridium tip, dramatically improving ignitability and longevity
  
• Platinum ground electrode for reduced wear and erosion
  
• Endures temperatures in excess of 4,000 degrees F
  
• Sustained performance over 100,000 miles--up to three times longer than conventional plugs
  
• Withstands higher pressures
  
• Tapered cut improves firing performance by reducing quenching
  
• 360 degree laser-welding process secures center electrode