NGK Racing Spark Plug Box of 4 (UR4IX)
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 & Benefits
- 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
- Special insulator nose configurations improve throttle response
- Corrugated ribs prevent flashover
- Copper core aids in heat removal
- Triple seals prevent leakage
Vehicle Applications
- CHECKER 1978-70; CHEV 1993-70; CHR/DOD/PLY 1987-74; FORD/LIN/MERC 1996-69; GM 1993-67; JEEP 1971-69, I/O - 2000-99 KODIAK, 1998-78 OMC, PE ENGINES - HON, KOHLER, MITS, SUBARU-ROBIN, OPE - VARIOUS
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Excluded from Policy: Clearance, Closeout, Used, Refurbished or Open-box items.
Typical order handling and processing time is 24 hours for orders placed Monday through Friday. We do our best to ship orders immediately but we reserve the right to take up to four (business) days to ship in-stock products. Business days are Monday through Friday; orders are not guaranteed to be processed on weekends. Orders placed after 3pm EST will be processed the following business day, regardless of the shipping method. Additionally, UPS/FedEx delivers ALL orders Monday thru Friday, regardless of the shipping time. If you need an order to be delivered on a Saturday (this applies to Next Day Air orders only), there is a $20 Saturday delivery fee, and this can only be arranged for by calling in and placing your order over the phone.
For out of stock items, or special ordering please give us a call at (510) 359-7232
WARNING: May contain items that are found to have compounds and/or chemicals known to the State of California to cause cancer, birth defects, and reproductive harm. For more info, please visitP65Warnings.ca.gov
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