Ngk G Power Plugs. For a 500 hp engine that s only 5 hp. Ngk 7090 bkr5egp g power spark plug pack of 4.
The ngk g power tr55gp spark plug is equipped with a fine platinum tip that is touted to reduce the required voltage of the plug. Trapezoid cut ground electrode reduces quenching. G power platinum alloy spark plugs offer superior performance with improved fuel efficiency lower emissions and quicker starts.
Ngk spark plugs u s a inc.
There are also drawbacks to indexing spark plugs. It is usually not worth the effort. Trapezoid cut ground electrode reduces quenching. 0 6mm laser welded fine platinum tip reduces required voltage ensuring high durability and a consistently stable spark.