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The NGK 4589 Laser Iridium Spark Plug (IFR6T11) is engineered for precision ignition, maximum durability, and long service life in modern engines. Featuring a fine-wire iridium center electrode and platinum-tipped ground electrode, it delivers superior ignitability, improved fuel efficiency, and reduced emissions—perfect for OE replacement in fuel-injected vehicles.
🔧 Iridium center electrode provides long-lasting spark and wear resistance
🔧 Platinum ground electrode extends service life and performance
🔧 Enhances throttle response and fuel economy
🔧 Pre-gapped at 1.1mm for easy OE-style installation
Brand & Part Number: NGK 4589 (IFR6T11)
Material: Iridium Center / Platinum Ground
Thread Size: 14mm
Reach: 25mm (0.98 in)
Hex Size: 5/8 in (16mm)
Heat Range: 6
Seat Type: Gasket
Resistor: Yes
Gap: 1.1mm (0.043 in)
Choose NGK IFR6T11 Laser Iridium for exceptional performance, long-term reliability, and OE-quality ignition—order now!