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NGK Iridium IX Spark Plug Box of 4 (YR5IX)
NGK Iridium IX Spark Plug Box of 4 (YR5IX)
NGK Iridium IX Spark Plug Box of 4 (YR5IX)
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NGK Iridium IX Spark Plug Box of 4 (YR5IX)

Marsoni M251S
Sale price$46.52
Pay 4 payments of $11.63 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
NGK Iridium IX Spark Plug Box of 4 (YR5IX)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
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  • Express: 1-2 business days

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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
4.1 ★★★★★
Based on 1807 reviews
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APTYP
Pawtucket, US
★★★★★ 5
💯% Authentic NGK Made in Japan.
Got these for my 2016 Subaru Crosstrek. You can't go wrong with NGK, these are 💯% AUTHENTIC, and made in Japan, unlike other NGK plugs that may be sold by other sellers which could be made in Thailand. The Subaru Crosstrek is running like a brand new vehicle after I put these puppies in it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 23, 2025
B
Verified Purchase
Britton Home Improvement
Charlottesville, US
★★★★★ 5
buy these!!
these are legit original NGK, superior plugs, will buy again
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
A
Verified Purchase
Anonymous User
Port Orchard, US
★★★★★ 5
Worked like a charm
Worked like a charm. The box and packaging were adequate from keeping the gaps of the plugs from being squished.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
T
Verified Purchase
TKmps
Battle Creek, US
★★★★★ 5
Perfect!!
As I expected, no more to say only I'm happy I got it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026
T
Verified Purchase
Timothy Dettman
Cuba, US
★★★★★ 5
Works great
Works great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026

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