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Cobb Spark Plug Set One Step Colder 2006-2014 WRX / 2004-2021 STI / 2005-2009 LGT / 2004-2008 FXT

SKU D44700
Original price $65.00 - Original price $65.00
Original price
$65.00 - $65.00
Current price $65.00

This is the factory spark plug as installed in the 2018 Subaru WRX STI Type RA and 2019 Subaru WRX STI. The main differences are a heat range that is one-step cooler as well as a slightly tighter gap than previous factory spark plugs. These serve as a factory replacement for the 2018 STI Type RA and 2019 STI and a great upgrade for modified 2.5L Turbocharged Subarus.

A good quality spark plug goes a long way in ensuring your car's engine is running smoothly. For years, tuners have been using an alternate solution on cars that needed a tighter gap and cooler heat range. Now available as an off-the-shelf plug, this takes the guess work out of replacing or upgrading your Subaru's spark plugs.


  • Subaru 2.5L Spark Plugs WRX, STI, Legacy GT, Forester XT
  • Laser Welded Iridium Tipped Center Electrode
  • Trivalent Metal Plating
  • .024 (.6mm) Gap
  • Heat Range : 7
  • Sold as Set of 4

Customer Reviews

Based on 1 review
Michael Sorey
Fast Shipping and Delivery

Haven't had the time to install yet but the shipping and delivery was very much appreciated! Definitely will be ordering more for my 2020 Subaru WRX STI in the near future from


We are glad to hear that you had a positive experience with the fast shipping and delivery of the Cobb Spark Plug Set for your Subaru WRX STI. We appreciate your 5 Star Review and look forward to serving you again in the future for your automotive needs. Thank you for choosing Subimods!


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