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Denso Iridium Power Plugs Two Step Colder IKH24 (Part Number: )
Denso Iridium Power Plugs Two Step Colder IKH24 (Part Number: )
Denso Iridium Power Plugs Two Step Colder IKH24 (Part Number: )
Denso Iridium Power Plugs Two Step Colder IKH24 (Part Number: )
Denso Iridium Power Plugs Two Step Colder IKH24 (Part Number: )
Denso Iridium Power Plugs Two Step Colder IKH24
Subaru EJ25 Turbo Models (inc. 2004+ STI / 2006-2014 WRX)
Write a Review | 11 Q&As
Part # 5346-IKH24-GRP
$46.80


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Features & Product Details

DENSOs Iridium Long Life plug is fast becoming the standard for todays high-tech engines. The properties of DENSOs patented Iridium alloy have broken through the spark plug technology barrier. Employing a revolutionary new 360 laser welding process, DENSO has created a spark plug unlike anything on the market today. Designed for durability under the most extreme conditions, DENSOs patented Iridium alloy is six times harder and eight times stronger than conventional platinum and can handle temperatures in excess of 4,000F.

Specifications

Brand: Denso
Heat Range: 24
Plug Gap: .032
Stock Number: 5346
Mfgr. Warranty: 1 year or 12,000 miles
Condition: New Product
Return Policy:

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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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QUESTIONS & ANSWERS

  • Q: Should I "upgrade" from 1 step  Daniel4 months ago

    2005 STi making 371whp on 91 octane (California). Would these help performance or am I still better off with 1 step colder plugs? I get misfire CEL more than I'd like and I don't always get clean, full power pulls when I should be. Could these help more than they'd hurt at this power level?
    • 0 of 0 people found the following answer helpful

      A:  These will be a good upgrade as the will help prevent preignition. They may idle a little rough so it may be a good idea to up your idle a hundred.

      Jared A. @ RallySport Direct 3 months ago  
        
      Was this answer helpful?
  • Q: Spark plugs  Rodgrick6714 months ago

    I’m currently stage 3 on a 2016 sti 360 hp & 342 torque. If I throw these in would it require a retune?
    • 0 of 0 people found the following answer helpful

      A:  With the power that you are making, it is recommended that you use one step colder plugs. You would not require a retune if you were to install colder plugs on your car.

      Karsten B. @ RallySport Direct 2 months ago  
        
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  • Q: 2015 sti  ckym7 months ago

    I have a 2015 sti stage2, 340whp. Will these plugs be ok?
    • 0 of 0 people found the following answer helpful

      A:  We recommend going two step colder plugs when you are closer to 400whp. With you set up it would best to run one step colder plugs.

      Luis L. @ RallySport Direct 7 months ago  
        
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  • Q: Two Step or One Step?  Joey12 months ago

    I have a 2013 wrx that is 398 whp. Should I be looking at one step colder plugs or two step colder?
    • 0 of 0 people found the following answer helpful

      A:  At 400whp, I would probably recommend going to the 2 step colder plugs, however, you could probably get away with one step colder plugs as well.

      Tyler G.
        
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  • Q: QUICK QUESTION  KGABBS3 years ago

    Is there a downfall to going ahead and running 2 steps colder in a 2011 WRX STI Hatch, even if I'm not currently very far from stock vehicle, but with plans on making big power in the near future?
    • 0 of 0 people found the following answer helpful

      A:  These plugs will likely be too cold for your current set up. You are supposed to drop a step colder for every 75-100 HP gained. I would stick with stock heat range plugs on your current set up.

      Josh P. @ RallySport Direct 2 years ago  
        
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