Review on 🔥 Set of 6 NGK 2477 Iridium Spark Plugs ZFR5FIX-11 - Brand New by Rick Gondoras

Unfortunately this is the first set of NGK spark plugs with which I am not 100% satisfied. Replaced it a few days ago on my 2005 Honda Pilot (my baby) with a 3.5 liter 6 cylinder engine. The only reason to replace these spark plugs (also NGK with other numbers) was time - over 8 years and 48,000 miles. After fitting new ones, the motor seems a little sluggish and not as strong - we'll see if it gets better in a couple of weeks. There is always a chance that the computer system will "accept" them. Decided to check both carefully. The old ones were made in the US with Japanese parts, the new ones are assembled in Thailand. Mileage still needs to be checked. I will write another review in a few months. ZS (Mechanical engineer with 35 years experience in automotive industry.) OK. I am back. After 2 days everything was back to normal. Smooth running, power and significantly better mileage. I am happy. ZS.