This Spark plug includes fine-wire center electrodes which provide better Sparking and ignitibility. This Spark plug features special insulator configuration to improve throttle response. This 8 pack NGK V-Power Racing 4050 (R5673-10) Spark Plug replaces Champion Spark Plug 668, Champion Spark Plug 669, Champion Spark Plug BL55... NGK Racing Spark Plug is designed to improve the performance of the vehicle. Electrode material used improves durability and lowers voltage requirement 4 pc NGK V-Power Racing 7405 (R5672A-9) Spark Plugs for 1001 277 3910 436XLS 51 792 AR3910 AR3910X Sbc Spark Plugs NGK Racing Spark Plug 4050 - Arnold Motor Supply Ngk (4050) R5673-10 Racing Spark Plug Pack Of 1 Wire Special insulator configuration improves throttle response. Confirmation Frame w/Mount | Gee Tee's It uses metals such as platinum, gold palladium as electrode material to improve durability and lower voltage requirements.
