NGK Iridium SILK series plug delivers reliable ignition performance and long service life for a wide range of petrol engines. Precision engineered with an iridium alloy centre electrode and a fine wire tip the plug promotes stronger sparks lower voltage requirements and more complete combustion. The construction uses a corrosion resistant nickel plated steel shell and a high quality glass to metal seal for durability under thermal stress. Built in resistor suppresses radio frequency interference and helps maintain stable engine electronics performance.

• Iridium centre electrode for extended life and consistent sparks
• Fine wire tip for improved ignition efficiency
• Nickel plated steel shell with durable plating
• Built in resistor for RFI suppression
• Precise factory gap for optimal combustion
• Heat range: 8 as per manufacturer specification

Factory calibrated for dependable starts and smooth throttle response this plug is ideal for drivers seeking improved fuel economy reduced misfires and longer service intervals. Typical recommended spark gap is 0.7 mm though final setting should follow the vehicle makers specification. Designed to meet strict quality and testing standards this plug balances performance durability and compatibility with modern ignition systems. Always verify fitment and gap before installation and replace plugs in sets to maintain even firing across all cylinders.