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Denso U-Groove Traditional Spark Plugs Stock Heat Range 3381 ( Part Number:DEN K20HR-U11-GRP)

Denso U-Groove Traditional Spark Plugs Stock Heat Range 3381 - Subaru EJ25 Turbo Models (inc. 2004+ STI / 2006-2014 WRX)

MODEL # DEN K20HR-U11-GRP
Manufacturer Part # K20HR-U11-GRP

$22.32

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Description

This innovative Denso spark plug comes equipped with Denso’s patented U-shaped ground electrode.  The U-Groove forms a channel for the spark nucleus to form at the instant of ignition, which generates a more potent spark.

More importantly during regular service intervals it is wise to check your spark plugs for wear, because new spark plugs will ensure for a healthy running engine, increased fuel economy, and better response. These are the factory heat range spark plugs for your vehicle, and should be a direct fitment. 

Sold in a set of 4.

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Specifications


Brand: Denso
Heat Range: 20
Plug Gap: .032
Stock Number: 3381

Mfgr. Warranty: 1 year or 12,000 miles
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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RallySportDirect.com Reviews:

These are easy to do, don't listen to people lol
SalLV 5 months ago
I would always hear people harp on about how hard it's to do spark plugs on F4 engines when in reality it's incredibly easy. If you're already modified with a CAI or short ram it will then be even easier. Also copper core plugs will perform better than your iridium/platinum if you weren't already aware. Copper=performance iridium/platnium=longevity And keep in stock heat range if all you have is an exhaust and intake lol you only need to go steps colder if you're pushing about 100whp over stock.
Comment
Verified Purchase

Better then NGK
Eddie 7 months ago
Changed my plugs after 20k and noticed right after installing the amazing difference, I've ran with the stock NGK Subaru spark plugs before and these spark plugs are far better. Throttle just feels all around better
Comment
Verified Purchase

Denso OEM Spec Spark Plugs for 08 OBXT
ShiiftyBiscuits 12 months ago
Got these plugs for some routine maintenance. Installation is a little time consuming but not hard with the right tools. They seem to work great, but it should be said that they MUST be gapped prior to installation. One of the plugs came with a gap of 0.06!!
Comment

Simple and Great
jake.ober201240264 4 years ago
Just installed these one my modified WRX these look great and perform well, gas mileage on my wrx is up to about 28 on highway at 75mph
Comment

Very good Product
jake.ober201240264 4 years ago
These are perfect for a slightly tuned car. My WRX has a couple STI Mods and I put these in and completely smoothed out my idle. The spark points are very big and solid, easy to put in, can't wait to put them to a hard test in the canyons.
Comment

  • Q: Stock Plugs  bogart 3 years ago

    Answer

    Are these plugs the same as the stock STI plugs (2012 model) Thanks


    • A: Yes, these will be the OEM Replacement Spark Plugs for STi models


      Brady R 3 years ago
  • Q: Stock Plugs  13TWRX 4 years ago

    Answer

    Are these the same plugs found on a stock 2013 WRX? Or would it be best to just purchase the official Subaru OEM plugs?


    • A: I am not sure the exact plug used in the stock 2013 WRX but these are designed to be an OEM stock heat range replacement. Thank you.


      Sterling W. 4 years ago
  • Q: Best bet for Stage 1?  ShaBorse 4 years ago

    Answer

    I'm assuming since I'm not 100hp over stock, would these would be my best bet? I only have the Cobb SF Short Ram, V3 accessport, and an SPT Exhaust.


  • Q: Gapping  tommyshibby 4 years ago

    Answer

    What is the gapping on these spark plugs??


    • A: These spark plugs are set to .032 from Denso and it is always a good idea to double check the gap before installation.


      Zach G. 4 years ago
  • Q: how much HP?  bmxhotsauce41940 4 years ago

    Answer

    how much HP will these hold up to? 100+ over stock HP or more? but will have to be changed out more often?


    • A: There is not a limit to the power these spark plugs will support, but it is recommended to go one step colder for every 100hp over stock. Copper plugs do not last as long as Iridium and will need to be changed more often.


      Zach G. 4 years ago
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