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NGK Iridium IX Spark Plug Set One Step Colder 2006-2014 WRX / 2004-2021 STI / 2005-2009 LGT / 2004-2013 FXT

by NGK
SKU 2309
Save $28.23 Save $28.23
Original price $73.23
Original price $73.23 - Original price $73.23
Original price $73.23
Current price $45.00
$45.00 - $45.00
Current price $45.00

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

Plugs are sold in sets of 4 only

Customer Reviews

Based on 14 reviews
Great Purchase

The only spark plugs I'll use in my Subaru's


We agree, NGK Iridium IX Spark Plug Set One Step Colder the only spark plugs you need for your Subaru! Your positive endorsement highlights their reliability and quality, making it a helpful recommendation for others. We appreciate your 5 Stars!


Tristan Jacob
Awesome plugs

Car runs a lot smoother and cleaner

Hello Tristan,

Thank you for taking the time to leave a review, we appreciate your feedback! We are glad to hear that the NGK Iridium IX Spark Plugs have improved the performance of your car! Happy driving!


Tiffany Lovett
Awesome quality

Awesome quality and worth the upgrade, as always fast shipping!


Thank you so much for your 5 Star Review! We are thrilled to hear that you are satisfied with the quality of our NGK Iridium IX Spark Plug Set. We always strive to provide top-notch products for our customers. Thank you for choosing Subimods, and we hope to continue serving you in the future. Happy driving!


Jacob McGory
Ngl one step colder plugs

Bought them for when I make some more power!


Thanks for choosing our NGK Iridium IX Spark Plug Set for your vehicle. We are glad to hear that you are planning to upgrade your power and these one step colder plugs will definitely be a great addition. We hope they meet and exceed your expectations. We appreciate your 5 Star Review! Happy driving!


Nathaniel Hines

Great service and quality products


Thank you for your 5 Star Review and positive feedback! We are happy to hear that you had a fast and great experience with our service and products. We strive to provide high-quality products and excellent customer service. Thank you for choosing NGK Iridium IX spark plugs from Subimods for your vehicle. We appreciate your support!


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