Product details

Dinan Iridium Spark Plugs are an excellent upgrade for tuned, and even stock engines, where applicable.* 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 select non-tuned / stock vehicles as well!* The D640-0002 spark plug applies to the following engines: N20, N54*, N55*, S55, N63/N63TU, & S63/S63TU Compatible OEM Part #Cross Reference: 12120039664, 12120038896 & 12120038704 Dinan Iridium Spark Plug - 12x26.5x14MM (HV) - Heat Range 9 *N54 & N55 COMPATIBILITY: Experienced users only N20/N54/N55/S55/N63/N63TU/S63/S63TU

Manufacturer fitment & guides

Check D640-0002 against the manufacturer’s application information below.

A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.

Part-specific notes

• California Proposition 65: Y