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Reviewed by Max D.
Verified Buyer
1 step colder plugs
Solved random misfire issue runs great with these
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Regular Price: $33.80 - Instant discount: $6.22 = $27.58
Fitment Information:
2006-2014 Subaru WRX
2004-2021 Subaru STi
2005-2009 Subaru Legacy GT
2005-2009 Subaru Outback XT
2004-2008 Subaru Forester XT
Features:
Shell
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: 7
Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.
Why NGK Iridium? More Durability and a Higher Melting Point compared to Platinum, better center electrode anti-oxidation and anti-erosion, improved ignition, superior anti-fouling, lower required voltage, new metal shell plating process for better anti-corrosion. One Step Colder plugs are recommended for cars with heavy modifications. These NGK plugs will get your Turbo Subaru running smoother and free up some power through increased efficiency and increased heat resistance. These are available in stock heat or one step colder for cars running approximately 100 horsepower more than stock.
Please Note:
Iridium plugs are able to use larger gap setting with less voltage. Some customers choose to regap these plugs to correct misfiring or tune for optimal spark -- do so at your own risk -- slide-type plug gapper will damage the fragile iridium tip.
Import Image Racing is an authorized dealer for NGK Spark Plugs. Purchasing from us guarantee's that your NGK products are always authentic and covered by manufacturer warranty.
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Solved random misfire issue runs great with these
Don't even think about using any other spark plug on your Wrx or Sti
Great product
Best plugs for built subi
Threw them in my ej255 a few weeks ago that’s far from stock and they have been running great!
Grear spark plugs, affordable.
Good product
Quick shipping! Arrived in one piece!
have lasted me a long time, considering that I use my STi for daily use.
Was driving the other day and my car suddenly acted like it was on launch control. It had been a while since changing plugs so that’s where we started and these did the trick and no longer have issues.