Designed specifically for the performance enthusiast. Iridium IX S spark plugs offer extreme ignitability, improved throttle response and superior anti-fouling. NGK Iridium Spark Plugs have proven to be the best choice for performance minded MINI Cooper owners. Fits Gen 1 MINI Coopers (2002-2006 R53S & 2005-2008 R52S)

• Three Heat Ranges Available (Factory Heat Range, +1 Colder, +2 Colder) 
  • See below for heat range recommendations
• Sold in a set of 4
• Fits Gen 1 MINI Coopers (2002-2006 R53S & 2005-2008 R52S)
• Fine Iridium tip ensures high durability and a consistently stable spark
• Iridium alloy has extremely high melting point, perfect for today's high-tech, high-performance engines
• Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties
• Outstanding acceleration, high fuel efficiency and durability
• Ultimate design, technology and performance.
• 0.6mm laser welded iridium tip
• Iridium alloy is extremely durable against heat, corrosion, and electrical wear
• Tapered ground electrode to minimize "quenching effect"

Heat Range Recommendations

Select desired heat range when ordering.

• Standard Heat Range: Best choice for daily driver with minor engine modifications
• +1 Colder Heat Range: Recommended for agressve driving and cars with engine mods such as 16% & 4% supercharger pulleys, ECU Tunes, 550cc injectors, cat-less free flow exhaust system with header and high RPM operation.
• +2 Colder Heat range: Recommended for all out performance engine mods (+250 HP) and sustained high RPM track driving. NOT RECOMMENDED FOR STREET DRIVING