Thread diameter (mm): 14 Thread length (mm): 19 Hexagonal width across flats (mm): 16

◆ New excitement born from quick response! A high-performance spark plug that brings out the power of your car! Iridium IX plugs spread combustion faster than regular plugs. In addition, a thermo-edge is provided on the tip of the insulator, making it a high-performance plug that prevents plug fouling! ■ Improved starting and acceleration performance [Give your car a high-quality run] The moment you step on the accelerator, the machine roars. This quick response brings a new joy to driving! ■ Increased fuel efficiency [Outstanding fuel efficiency. Kind to your wallet and the environment. ] Iridium plugs have better ignitability than regular plugs and achieve outstanding fuel efficiency! [High-performance iridium IX plugs spark new realms of engine performance!] Iridium IX plugs have a standard heat value installed in new cars. It is an iridium plug that can be replaced with a plug. Combustion spreads faster than regular plugs, and a thermo-edge is provided at the tip of the insulator to prevent plug fouling. A high value-added plug that enables improved ignition performance, acceleration performance, and fuel efficiency.


Manufacturer: ‎NGK
Part number: ‎6441-4PK
Product weight: ‎0.28 g
Product size: ‎2.26 x 8.71 x 2.49 cm; 0.28 g
Discontinued by manufacturer: ‎No
Batteries included: ‎No
Uses batteries: ‎No
Product dimensions (Length x Width x Height): ‎ 23x87x25mm