Dinan Iridium Spark Plug - 12x26.5x14MM (Flat) - Heat Range 12

For BMW B48 TU B58 TU1 (Gen 2 B48 Gen 3 B58)

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!

The D640-0003 spark plug applies to the following engines: B48 TU B58 TU1 (Gen 2 B48 Gen 3 B58)

Compatible OEM Part #Cross Reference: 12125A523E0

Features:

• Heat range 12 spark plug (Similar: NGK 8)
• 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
• Thread reach: 26.5mm
• Thread diameter: 12mm
• Hexagon: 14mm Bi-Hex
• Terminal Type: Cup
• Seat Type: Flat
• Install Torque: 15 + 25 Nm
• Insulator Material: Ceramic
• Supplied Gap: 0.5mm
• Made in the EU