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NGK Iridium IX Spark Plug Box of 4 (TR4IX)
NGK Iridium IX Spark Plug Box of 4 (TR4IX)
NGK Iridium IX Spark Plug Box of 4 (TR4IX)
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NGK Iridium IX Spark Plug Box of 4 (TR4IX)

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 (TR4IX)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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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
4.0 ★★★★★
Based on 696 reviews
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M
Verified Purchase
M. Chulick
Waukegan, US
★★★★★ 4
Delivered quickly
Size: 16 Fl Oz (Pack of 1), Style: Individual
Just trying to keep my small engines running with this awful California fuel
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 4, 2025
S
Verified Purchase
Shopper scott
Massapequa, US
★★★★★ 5
Good buy
Fit great. I have a toro 7.25 Brigs & Stratton 21 icnh rececyler. Mower started up great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
R
Verified Purchase
Robert Edwards
Waukegan, US
★★★★★ 5
Good Product
Works great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
M
Verified Purchase
MARC FOSTER
Pawtucket, US
★★★★★ 5
Worked perfectly
Excellent product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
K
Verified Purchase
KT
Louisville, US
★★★★★ 4
Check the gap!
Plugs work great. I will say for those reviews saying they got a dud. CHECK THE GAP!!! Both plugs were not at 0.030 as advertised. I gapped the plug and it worked perfectly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026

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