Dinan D640-0002 Iridium Spark Plug - Heat Range 9 - Select BMW 2007-2021 (N20/N54/N55/S55/N63/S63) - Single

Fits select 2007-2021 BMW models equipped with N20, N54, N55, S55, N63, and S63 engines. Designed for high-performance and tuned applications, these Dinan Iridium spark plugs provide superior heat management and ignition reliability. By utilizing an iridium electrode with a copper core, these plugs offer significantly higher melting points than standard copper or platinum alternatives, allowing for a colder operating temperature that resists pre-ignition under high boost or high load.

These Heat Range 9 plugs are optimized for hard-to-ignite fuels like ethanol and are an essential match for Dinan ignition coils. Depending on your engine, they provide a colder heat range than factory (1 step colder for N20, S55, N63, S63; 2 steps for N55; and 3 steps for N54) to ensure stable combustion in modified setups. Manufactured in the EU to precise tolerances, they feature a projected insulator design and a 14mm bi-hexagonal configuration for secure installation.

• Manufacturer Part Number: D640-0002
• Heat Range: 9 (Compatible with Bosch 3, Brisk 10, Champion 4, Denso 27, NGK 9)
• Material: Iridium electrode with Copper core and Ceramic insulator
• Thread Diameter: 12mm
• Thread Reach: 26.5mm
• Hexagon: 14mm Bi-Hex
• Supplied Gap: 0.5mm
• Installation Torque: 17 Nm
• Terminal/Seat Type: Nut / Flat