★★★★★ 5
Fits
Fits a 15 Subaru Forester, working great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
NGK Iridium IX Spark Plug Box of 4 (TR5-1IX)
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
NGK Iridium IX Spark Plug Box of 4 (TR5-1IX)NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high
Quick Dispatch:
Your NGK Iridium IX Spark Plug Box of 4 (TR5-1IX) orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your NGK Iridium IX Spark Plug Box of 4 (TR5-1IX) ships.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Based on 1360 reviews
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Product Reviews
★★★★★ 5
Good Quality, Good Price for a Subaru Replacement Air Filter
Look like a great name brand filter. Not a bad price for a Subaru (2013) replacement. I will buy again if available.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
★★★★★ 5
It works!
Fitment was great on my 2014 Subaru Crosstrek. Construction was solid and great that I don’t have to worry about changing it for 18,000 miles. Would purchase again.
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Reviewed in the United States on March 26, 2026
★★★★★ 5
As described, great quality
Perfect fit and function for 2018 Subaru Outback
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Reviewed in the United States on January 15, 2026
★★★★★ 4
Good product
This is a long life filter without having to oil and wash like a lifetime k&n.
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Reviewed in the United States on December 18, 2025
