NGK Iridium IX Spark Plug Box of 4 (LTR7AIX) 97921
NGK Iridium IX Spark Plug Box of 4 (LTR7AIX) 97921
Shipping calculated at checkout.
To United StatesChange
Final options and totals are confirmed at checkout.
21 in stock
Not sure this is the right part? Ask us to check fitment. Include your year, make, model, engine and manufacturer part number.
Shipping & returns
Shipping details
In-stock orders are processed within 48 hours; transit time is additional.
International orders include export processing and customs clearance. Duties, taxes and brokerage are extra; final freight charges may change after remeasurement.
Read the shipping policyNGK Iridium IX
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.
