NGK
NGK IX Iridium Spark Plug Box of 4 (TR55IX)
SKU: ngk7164
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
- Trivalent metal plating for superior anti-corrosion and anti-seizing properties
- Outstanding acceleration, high fuel efficiency and durability
- Fine iridium tip ensures durable and consistent spark
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Fitment notes (catalog)
BUICK 2011-88; CADILLAC 2011-82; CHEV 2014-92; FORD/LIN/MERC 2014-78; GMC 2014-96; ISUZU 1999-97; JAGUAR 2002-00; MAZDA 2007-91; OLDSMOBILE 2003-88; PONT 2008-88; SATURN 2006-05, I/O - 2005 CRUSADER, 2005-94 INDMAR, 2006-00 MERC
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.