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10 Best spark plugs iridiums of 2025
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- Best Choice
1
NGK(8-Pack) NGK Spark Plugs IZTR5B11 (Stock # 1465)
20% OffMain highlights-
Superior Ignition Performance
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Perfect for High-Performance Engines
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Durability Praised by Users
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How do we rank?
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3
NGKNGK LKAR7BIX-11S Iridium IX Spark Plug (93501 Iridium Ix), 4 Pack
Main highlights-
Extreme Ignitability and Durability
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Ideal for High-Performance Engines
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Praised for Enhanced Performance
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4
NGKNGK LKR7DIX-11S Iridium IX Spark Plug (93175 Iridium Ix), 4 Pack
Main highlights-
Extreme Ignitability and Throttle Response
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Ideal for High Performance Engines
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Praised for Improved Fuel Efficiency
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5
NGKNGK 6619 Iridium Spark Plugs LFR6AIX-11 - 6 PCSNEW
Main highlights-
Wide Heat Range Operation
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Ideal for Long-Lasting Performance
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Highly Recommended by Mechanics
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See Today’s Deals & Prices
6
NGKNGK # 6509 Iridium Spark Plug LTR6IX-11 - 6 PCSNEW
Main highlights-
Iridium Technology for Enhanced Performance
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Ideal for Smooth Vehicle Operation
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Fast Shipping and Proper Gapping
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8
NGK6 New NGK Iridium IX Spark Plugs LFR5AIX-11 # 4469
Main highlights-
Extreme Performance and Longevity
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Optimal for Turbo Engines
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Highly Rated for Performance
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