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NGK Iridium Spark Plugs One Step Colder 2309 - Subaru EJ25 Turbo Models (inc. 2004+ STI / 2006-2014 WRX)

MODEL # NGK LFR7AIX-GRP
Manufacturer Part # LFR7AIX-GRP

$44.80

MSRP: $73.24

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Description

NGK Iridium IX Spark Plugs are designed specifically for the performance enthusiast. Iridium IX 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.

These are one step colder plugs and are recommended for higher horsepower applications. A higher heat range number does not improve engine performance, it increases the plugs ability to dissipate heat.

Stock Number 2309
Heat Range: 7
Plug Gap: .032
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Specifications


Brand: NGK
Heat Range: 7
Plug Gap: .032
Stock Number: 2309

Mfgr. Warranty: 60 Days
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days


Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
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4.7

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4 STAR
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3 STAR
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1 STAR
Verified Purchase

Worked as intended
Jordan Daniels 11 days ago
Pre gapped plugs. Worked as advertised.
Comment
Verified Purchase

Good plugs
jghost 3 months ago
Used on a protuned 06 legacy gt. Helped keep egt in check and fit perfect!
Comment
Verified Purchase

Fast shipping
Motrudboy 4 months ago
Ngk plugs are top of the line, one step colder works great with 400whp on my Sti.
Comment
Verified Purchase


4 months ago

Comment
Verified Purchase

Great product
Condor 303 7 months ago
Great product and great performance for my STI.
Comment

  • Q: Worth getting retune after install  Case 14 days ago

    Answer

    Q: Worth getting retune after install Case 2 days ago Answer My car was protune with the original spark plugs. Would it be worth it to get a retune after install A: You wouldn't need a re-tune after installing these. Marcus E. 2 hours ago 0 0 I know it wouldn't require a retune, but if I did get a retune, would I get any gains? ie timing adv because of a cooler cyl?


    • A: You would not see anything noticeable with a retune, if there are any changes it won't require a retune to see them.


      Devan M. 13 days ago
  • Q: Worth getting retune after install  Case 16 days ago

    Answer

    My car was protune with the original spark plugs. Would it be worth it to get a retune after install


    • A: You wouldn't need a re-tune after installing these.


      Marcus E. 14 days ago
    • A: I know it wouldn't require a retune, but I did get a retune, would I get any gains? ie timing adv because of a cooler cyl?


      Case 14 days ago
  • Q: stock sti  John 3 months ago

    Answer

    i have a 2012 wrx sti. bone stock would i need a tune with these plugs?


    • A: Step colder plugs will dissipate heat more efficiently, which will bring down combustion chamber pressures and prevent pre-detonation. They are not recommended for stock or close to stock power vehicles because the cylinder temps do not get hot enough, which can cause carbon buildup on the plugs. Higher powered vehicles produce the heat to burn these deposits off.


      Devan M. 2 months ago
  • Q: E90 335.   Bmw4256 4 months ago

    Answer

    I have an 08 bmw335i w n54 motor. Catless dp, dual cone intakes, stage 1 fuel it lpfp, vrsf fmic, stett charge pipe w tial bov, jb4 w mhd backend flash running e60. Buddy w similar setup was at 430whp and 470 ft/lbs. Would these be the way to go?


    • A: These spark plugs are not confirmed to fit your car. These are Subaru 2004+ STI / 2006-2014 WRX engines.


      Karsten B. 2 months ago
  • Q: Why exactly do you need/want one step colder plugs?  DaveC253 5 months ago

    Answer

    I know every 100hp gain you should go 1 step colder. But why? I never grew out of that stage as a toddler, I just like to know why I am doing something on my car.


    • A: Step colder plugs will dissipate heat more efficiently, which will bring down combustion chamber pressures and prevent pre-detonation. They are not recommended for stock or close to stock power vehicles because the cylinder temps do not get hot enough, which can cause carbon buildup on the plugs. Higher powered vehicles produce the heat to burn these deposits off.


      Marcus E. 2 months ago
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