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The NGK Ruthenium HX LKR7BHX is a high-ignitability iridium-style spark plug with a ruthenium center electrode tip, sold here as a box of four. NGK claims the ruthenium tip outlasts conventional platinum and iridium plugs and gives a more complete fuel burn, which it says shows up as quicker throttle response, a smoother idle and easier cold starts. It is aimed at owners of modern Chrysler, Dodge, Jeep and similar vehicles who want a long-life plug rather than a budget replacement. Against standard iridium plugs it trades a higher tip cost for longer service life; against copper or platinum plugs it is a clear step up in durability.
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Lowest price we've seen: $48.98 on Nov 13 at Amazon. Tracked across 5 stores since Nov 13.
NGK Ruthenium HX spark plugs are high-ignitability plugs for modern vehicles. They use a ruthenium center electrode and specialized OEM DFE and PSPE tip designs, developed from OE technology.
The plugs are designed to burn fuel more completely. This results in quicker throttle response, smoother idle and better cold starts.
