NGK LFR7AIX Iridium Spark Plugs Subaru WRX 2006-2014 / STI 2004-2021 – Import Image Racing
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NGK (LFR7AIX) Iridium IX 1 Step Colder Spark Plugs Subaru WRX 2006-2014 / STI 2004-2021 | 2309
NGK (LFR7AIX) Iridium IX 1 Step Colder Spark Plugs Subaru WRX 2006-2014 / STI 2004-2021 | 2309
NGK (LFR7AIX) Iridium IX 1 Step Colder Spark Plugs Subaru WRX 2006-2014 / STI 2004-2021 | 2309

NGK (LFR7AIX) Iridium IX 1 Step Colder Spark Plugs Subaru WRX 2006-2014 / STI 2004-2021 | 2309

Rated 5.0 out of 5
Based on 66 reviews
SKU: ngk2309
Availability: 898 In Stock
Product Type: Engine Spark Plugs
$29.99
$33.80
$29.99
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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:

  • Sold as a set of 4 spark plugs
  • Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
  • Corrugated ribs prevent flashover
  • Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer
  • Copper core aids in heat removal
  • Triple seals prevent leakage
  • Longevity: 50k Miles
  • 60 Days manufacturer Warranty

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.



average rating 5.0 out of 5
Based on 66 reviews
  • 5 Stars
    65 Reviews
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98% of reviewers would recommend this product to a friend
Review posted
Reviewed by Joel
Rated 5 out of 5

5 Stars

Quick shipping! Arrived in one piece!

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Review posted
Reviewed by Emilio L.
Verified Buyer
Rated 5 out of 5

Nice Spark plugs

have lasted me a long time, considering that I use my STi for daily use.

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Reviewed by Ryan F.
Verified Buyer
Rated 5 out of 5

Bye bye misfire

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.

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Reviewed by Will F.
Verified Buyer
Rated 5 out of 5

Great

Fixed my misfire issue. Fairly easy install

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Review posted
Reviewed by Antonio C.
Verified Buyer
Rated 5 out of 5

Great sparkplugs and great shipping

They do what sparkplugs do and that's about all you could ask

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Review posted
Reviewed by Yavier
Rated 5 out of 5

5 Stars

Always great ordering from IIR. Shipping isnfast and quality is superior

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Review posted
Reviewed by Luis M.
Verified Buyer
Rated 5 out of 5

Use your hands

It’s an easy replacement. But sucks at the same time. One thing I learned is to use you hands as much as you possibly can. These things are very fragile.

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Reviewed by Justin B.
Verified Buyer
Rated 5 out of 5

Spark plugs

Great product fast shipping

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Review posted
Reviewed by J. Ryan L.
Verified Buyer
Rated 5 out of 5

1 Step Colder Plugs

Fast shipping, and will work great for my FP Green turbo set up. Make sure to get the right Heat range plugs for your power goals, and to check the gap with a Gauge prior to install!

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Review posted
Reviewed by Douglas J.
Verified Buyer
Rated 5 out of 5

Go to spark plugs

Always run these exact plugs on all my Subarus and have never failed me once. NGK ftw

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