NGK Laser Iridium Spark Plugs (Set of 4) for 2004-2007 STI & 2005-2009 Legacy GT | 6481
Video description
Restore factory ignition performance with the NGK Laser Iridium Spark Plug Set for the 2004-2007 Subaru STI and 2005-2009 Subaru Legacy GT. Featuring fine-wire iridium and platinum electrodes, these genuine NGK plugs deliver exceptional durability, reliable ignition, improved fuel efficiency, and an impressive service life of up to 100,000 miles.
As the original equipment supplier for many Subaru applications, NGK is the trusted choice for maintaining peak engine performance.
Fitment:
Subaru STI (2004-2007)
Subaru Legacy GT (2005-2009)
Features
- Genuine NGK Laser Iridium spark plugs
- Sold as a complete set of 4
- Fine-wire iridium center electrode
- Platinum-tipped ground electrode
- Copper core for excellent heat transfer
- Trivalent metal plating for corrosion resistance
- Triple-seal construction helps prevent combustion gas leakage
- OE heat range and gap specification
- Up to 100,000-mile service life
Specifications
- Thread Diameter: 14mm
- Thread Pitch: 1.25mm
- Reach: 26.5mm (1.04")
- Seat Type: Flat
- Wrench Size: 5/8" (16mm)
- Factory Gap: 0.031" (0.8mm)
- Heat Range: 6
- Resistor: 5k Ohm
Torque Specifications
Cast Iron Cylinder Head: 18–25.3 lb-ft
Aluminum Cylinder Head: 18–21.6 lb-ft
Import Image Racing is an authorized NGK dealer, ensuring you receive genuine NGK products backed by the manufacturer's warranty.





