Dinan B48/B58/S58 Iridium Spark Plug - Heat Range 9 - 12mm x 26.5mm x 14mm (Flat) - SINGLE

Dinan Iridium Spark Plugs are an excellent upgrade for tuned, and even stock engines. Our spark plugs are made from Iridium - one of the strongest materials available. They last longer than other materials with higher melting points, run cooler, resist preignition, and even require less voltage to produce a strong spark. The iridium electrode with its copper core is harder and stronger than other materials, can dissipate heat more easily, and is better protected from melting, cracking, and other limitations found with standard plugs.

• 152% higher melting point than silver, 125% higher than copper, and 38% higher than platinum
• Heat range 9 spark plug (Similar: Bosch 3, Brisk 10, Champion 4, Denso 27, and NGK 9)
• Acceptable for high performance / tuned and stock vehicle applications alike
• Optimized electrode design for hard to ignite fuels, such as ethanol
• 1 step colder than OEM (Gen 1 B48, Gen 1/2 B58, & S58)
• Cooler operating temperature than stock plugs
• Resists preignition better than stock plugs
• An excellent match for Dinan ignition coils
• Stronger than copper and platinum
• Lower required supplied voltage
• Insulator Material: Ceramic
• Projected insulator design
• Thread diameter: 12mm
• Install Torque: 17 Nm
• Thread reach: 26.5mm

Fitment

Always check sizes, gap, and heat range specs before installing. Installation of the wrong length plug can cause damage to the engine. You must verify this before installing the plug.

WARNING: This product may expose you to chemicals known to the State of California to cause cancer and/or reproductive harm. www.P65Warnings.ca.gov