Autolite APP3924-4PK Double Platinum Spark Plug, Pack of 4

• Full platinum tips ensure virtually no gap erosion
• Works to optimize engine performance for a longer life and improved fuel economy
• Necked-down center electrode fires quicker and cleaner, with less voltage for easier starts and quicker acceleration
• High nickel alloy side electrode maintains precise gap
• Full copper core electrode provides better performance in all conditions

Autolite Double Platinum Spark Plugs feature platinum-to-platinum firing which virtually eliminates gap erosion, reduces misfires, and provides improved durability. These superior-performing spark plugs provide the preferred technology for DIS engines. They also feature a high nickel alloy side electrode, full platinum tips, a necked-down center electrode, and a full copper core center electrode. Guaranteed for 5 years.