DENSO is one of the largest automotive-component suppliers with more than $40 billion in annual sales. For over 65 years, DENSO parts have been the global choice for top automakers, with hundreds of vehicle models rolling off the assembly line with DENSO auto parts under the hood. Combine that with their commitment to quality—showcased by their QS9000 and ISO9000-certified factories and easily installed First Time Fit product line—and you have a clear choice in product reliability and longevity.From the development of direct ignition coils to revolutionizing the concept of the aftermarket performance spark plug by using platinum and iridium, DENSO is often on the front lines of product advancement. DENSO continues their innovation with the First Time Fit product line, which includes premium DENSO parts such as oxygen sensors, air fuel ratio sensors (AFR), A/C compressors, cabin air filters, condensers, evaporators, radiators, receiver-driers, starters, alternators, fuel pumps, oil and air filters, ignition wire sets, tire pressure monitoring system sensors (TPMS), and windshield wiper blades.

• No-compromise, top of the line race spark plug for the most serious enthusiast.
• Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
• Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
• Wide range of part numbers for thousands of applications, including classic and collector cars
• Lasts twice as long as most conventional plugs
• Withstands temperatures greater than 4000° Fahrenheit
• Electrode Core Material : Copper
• Electrode Tip Material : 0.4mm Iridium
• Ground Strap Quantity : 1
• Insulator Type : Purified Alumina
• Manufacturer Heat Range : 20
• Material : 0.4mm Iridium
• Resistor : Yes
• Seat Type : Gasket
• Type : Iridium Power