NGK Iridium Spark Plugs - One Step Colder 2309 - Subaru EJ25 Turbo Models - 2004-2021 STI, 2006-2014 WRX, 05-09 LGT, 03-08 FXT, ECT.
NGK Iridium Spark Plugs are designed specifically for the performance enthusiast. Iridium offers extreme ignitability, improved throttle response and superior anti fouling.
The 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.
Specifications:
- Stock Number 2309
- 554: 5K Ohm
- Center Electrode Core Material: Copper Core
- Center Electrode Tip Material: Iridium
- Gap Size: 0.032
- Ground Configuration: Standard
- Ground Electrode Core Material: Nickel Core
- Ground Electrode Quantity: 1
- Ground Electrode Tip Design: Taper Cut
- Hex Size: 5/8in
- Insulator Height: ISO
- Manufacturer Heat Range: 7
- Reach: 26.5
- Resistance: 5K Ohm
- Seat Type: Gasket
- Thread Diameter: 0.551
Note:
- These are one step colder plugs and are recommended for higher horsepower applications.
- Turbocharged vehicles require less heat due to heat sensitivity to avoid detonation
- For tuned vehicles NGK "7" heat range is the One Step (1-Step) colder spark plug
- SOLD AS A SET OF 4
Fitment:
2004-2021 Subaru STI & Type-RA
2006-2014 Subaru WRX
2005-2009 Subaru Legacy GT & Spec B
2005-2009 Subaru Outback XT
2004-2013 Subaru Forester XT
One Step Colder - Iridium
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