![]() ![]() The factory set of 16 spark plugs for the 5.7 Hemi engined products is a one-stop solution for your spark plugs needs. There’s no warranty information available on the listing, but make it a point to ask the seller before making the purchase. The Iridium spark plugs are bound to last longer than the standard ones - and the cost difference isn’t huge, either. That’s because, with an Iridium-tipped electrode, it requires less effort for combustion, therefore making the process more efficient and less taxing on the electrical system of the vehicle. To complement a high-performance engine, the NGK Iridium Spark Plug is a good product. The spark plug has a wrench diameter of ⅝ inches, a spark plug reach of 1.043 in, a thread size of 14 mm, and a Copper electrode core. The trivalent metal plating offers anti-corrosion and anti-seizing properties. While performance gains are likely to be marginal only, it offers improved acceleration, better fuel efficiency, and longer life. The iridium tip is what differentiates it from the lesser models. The spark plug comes with high-grade alumina silicate ceramic and fine wire center electrodes. ![]()
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