🔥 NGK Spark Plugs TR55 (Stock # 3951) - 6-Pack for Optimal Engine Performance Review

Works great on the 2007 Ford Five Hundred. It has not changed since the time of manufacture, which has led to an increase in electricity and gas consumption.

These are very good spark plugs! They increased my gas mileage and made my car run smoother! They have held up very well! Great plug set!

The check engine light came on immediately after replacing the original spark plugs on a 2003 Mazda Trinity. Do not use on this car. Revain is not entirely correct on this point.

I installed them on a 2001 Ford 3.0 liter engine. Their quality is good and they were all correctly gapped (although I would check them anyway) according to the specs. My engine had to be adjusted so I can tell the difference.

I like candles and coils so I bought it, I came to pay a huge price to have my '07 Ford 500 SEL taken to a professional and then walked around the surrounding neighborhood and the bulb around, check the PO301 code the mechanic said COILS AND OR FORKS ARE NOT GOOD!

What more could you ask for they installed ngk on a 03 4.3 Vortec S10 Blazer as scheduled maintenance and also the rotor cap and cables so all said and done it has really improved performance no iridium plugs, but I don't care, they're simple enough. I'll pull one out in a few years and replace again when needed