NGK Iridium IX® The Spark Plug Serious Enthusiasts Rely On.

Designed specifically for the performance enthusiast.  Iridium IX® offers extreme ignitability, improved throttle response and superior anti fouling Fine Iridium tip ensures high durability and a consistently stable spark Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines Trivalent Metal Plating - superior anti-corrosion and anti-seizing properties Outstanding acceleration, high fuel efficiency and durability Ultimate design, technology and performance.

Colder Heat Range 7 Spark Plugs... Set of 4

With modified engines (those engines that have increased their compression) more heat is a by-product of the added power that normally comes with increased compression. In short, select one heat range colder for every 75-100 hp you add, or when you significantly raise compression. Also remember to retard the timing a little and to increase fuel enrichment and octane. These tips are critical when adding forced induction (turbos, superchargers or nitrous kits), and failure to address ALL of these areas will virtually guarantee engine damage.

BKR7EIX is one step "colder" than BKR6EIX and Gap is .03" (0.8mm)

If your vehicle requires 6 heat range, these will be one step colder.

Common engines that use BKR__EIX Series Plugs...

Acura: B18C / B18C1 / B17A1 / B18C5

Honda: B16A / B16A2 / B16A3 / D16Y2

Nissan: SR20DE / SR20DET / VQ30DET / VG30E/ RB30E / RB26DETT

Mitsubishi: 6G72 / 6G72-T

Subaru: EJ20 / EJ25 / EJ20T / EJ253

Toyota: 2AZFE / 5SFE / 2ZZGE / 1MZFE / 1GEE/ 1VZFE / 4SFE / 3SFE / 3SGTE / 1JZGTE

We are not responsible for selecting the correct heat range, gap and model plug for
your paticlular vehicle, except for the stock plug for a stock engine.
For modified engines, please do your research before you purchase any plug.

This item is In-Stock and ships within 1 Business Day. Most items ship same-day.

Parts ship from United States to ALL 50 States, Puerto Rico, Guam, Virgin Islands, PO Boxes

All APO/FPO shipments receive free shipping... thank you for your service!

Worldwide shipping via USPS First Class or Priority International depending on weight.

All parts have a 60 Day No-Hassle Return/Exchange Period

Any new and unused part may be returned for a refund or exchange within 60 days. No re-stocking fee or complicated return authorization required. Just send us a email and let us know and we will take care of the problem. If the problem was our fault... wrong part, missing part, damaged... we will also pay the return shipping.

All parts are New and include a Manufacturers Warranty

We are a Authorized Dealer for every part we sell and all parts carry at least a 1 Year Manufacturers Warranty. Just keep a record of your purchase in the event you need to warranty your part in the future.

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