NGK
NGK Iridium Spark Plugs Box of 4 (ZFR5FIX-11)
SKU: ngk2477
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....
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Overview
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 melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.
Features
- RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
- Pure alumina silicate ceramic insulator provides superior strength and better heat transfer
- Trivalent metal plating for superior anti-corrosion and anti-seizing properties
- Copper core aids in heat removal
- Triple seals prevent leakage
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Fitment notes (catalog)
ACURA 2003-92; BMW 1997-88; CHRYS 2014-07; DODGE 2014-94; HON 2005-90; HYUNDAI 2011-06; ISUZU 1999-96; JEEP 2014-07; KIA 2011-08; MAZDA 2003-90; MITSUBISHI 2007-06
Summarized compatible vehicles also appear under Description → Fitment.
Detailed rows from our confirmed fitment index can be large (dozens to hundreds per part). Load them only when you need year/trim/engine-level links to Shop by Vehicle.