These NGK Laser Iridium spark plugs are a top - notch choice for your vehicle. They're engineered specifically for OE applications, ensuring a perfect fit. You'll get a set of 4 spark plugs, which is great value. The trivalent metal plating offers excellent anti - corrosion and anti - seizing properties, so they'll last longer. The corrugated ribs stop flashover, and the pure alumina silicate ceramic insulator provides strong heat transfer. The copper core helps remove heat effectively, and the triple seals prevent leakage. With a lifespan of 100k miles and a 60 - day manufacturer warranty, you can trust these plugs. They're designed for 2004 - 2007 Subaru STI and 2005 - 2009 Subaru Legacy GT models. The fine wire iridium - tipped center electrode and fine wire platinum - tipped ground electrode ensure a slow wear rate, giving you a stable idle, better anti - fouling, improved fuel efficiency, and lower emissions. Import Image Racing is an authorized dealer, so you can be sure you're getting authentic NGK products covered by the manufacturer warranty.
**Shell Details**:
- Spark Plug Thread Diameter: 14mm
- Thread Pitch: 1.25mm
- Seat Type: Flat
- Reach: 26.5mm (1.04')
- Wrench Diameter: 5/8' (16mm)
- Terminal Type: Solid
- Gap: .031' (0.8mm)
**Center Electrode**:
- Electrode Tip Material: Iridium
- Electrode Core Material: Copper
**Ground Electrode**:
- Material: Nickel
- Type: Standard
- Shape: Taper Cut
**Specifications**:
- Resistor: Yes
- Resistor Value: 5k Ohm
- Manufacturer Heat Range: 6
- Torque Specs: Cast Iron: 18 - 25.3 lb. ft., Aluminum: 18 - 21.6 lb. ft.
Using these NGK Laser Iridium spark plugs is easy. First, make sure your vehicle engine is cool. You'll need a proper spark plug socket to remove the old plugs. Take your time to unscrew them gently. Once the old plugs are out, carefully insert the new NGK plugs into the sockets. Don't overtighten them. Refer to the torque specs: 18 - 25.3 lb. ft. for cast iron engines and 18 - 21.6 lb. ft. for aluminum engines. When it comes to maintenance, these plugs are quite durable. However, it's a good idea to check them every 20,000 - 30,000 miles. Look for signs of fouling, corrosion, or excessive wear. If you notice any issues, it might be time to replace them. Keep in mind that these plugs are designed for specific models (2004 - 2007 Subaru STI and 2005 - 2009 Subaru Legacy GT), so make sure your vehicle matches before installation. And remember, since they come with a 60 - day manufacturer warranty, if you have any problems during this period, contact the authorized dealer Import Image Racing.
