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.
Dinan spark plugs are great for high boost, high cylinder pressure, high cylinder temperatures, and high-power situations, and they pair nicely with a set of Dinan ignition coils, where applicable. However, they are not only for tuned and higher output vehicles that may benefit from a plug cooler than the factory heat range – they also are applicable to non-tuned / stock vehicles as well!
Features
- Heat range 9 spark plug (Similar: Bosch 3, Brisk 10, Champion 4, Denso 27, and NGK 9)
- 152% higher melting point than silver, 125% higher than copper, and 38% higher than platinum
- Stronger than copper and platinum
- Acceptable for high performance / tuned and stock vehicle applications alike
- Projected insulator design
- Lower required supplied voltage
- Cooler operating temperature than stock plugs
- Optimized electrode design for hard to ignite fuels, such as ethanol
- Resists preignition better than stock plugs
- An excellent match for Dinan ignition coils
- Thread reach: 26.5mm
- Thread diameter: 12mm
- Hexagon: 14mm Bi-Hex
- Terminal Type: Cup
- Seat Type: Flat
- Install Torque: 17 Nm
- Insulator Material: Ceramic
- Supplied Gap: 0.5mm
- 1 step colder than OEM (S55, S63)
- Made in the EU
The D640-0002 spark plug applies to the following engines: S55, S63/S63TU. Compatible OEM Part #Cross Reference: 12120039664, 12120038896 & 12120038704
Vehicles Supported
BMW F87 M2, including Competition
BMW F8X M3/M4, including Competition
BMW F10 M5, including Competition
BMW F90 M5, including Competition
BMW F91/F92/F93 M8, including Competition
BMW F85/F86 X5M/X6M, including Competition
⚠️ WARNING TO OUR CALIFORNIAN CONSUMERS:
This product can expose you to chemicals known to the State of California to cause cancer or birth defects and reproductive harm. For more information go to: https://www.p65warnings.ca.gov/
Tab 3
Tab 4
