Review on NGK 2477 ZFR5FIX 11 Iridium Spark Replacement Parts by Jeremy Miller

worked great. The forks were pre-deleted to correct the specs. Don't expect a noticeable increase in performance, just extend the life of your spark plug. This only gives you power when you are on the redline, and only 2% at that point. For everyday driving, this just gives you peace of mind that the spark plug will last 3x longer. Be sure to apply anti-seize paste to the threads because next time you want to change spark plugs you may have to pay a mechanic to remove the head to replace the spark plug. Ouch$$$, a cheap mechanic can charge you $500 because the parts are $360 for a 99 Integra 4 cylinder headgasket kit.