🔌 Set of 4 Brand New DENSO #4511 Platinum T T Spark Plugs - PT16TT Review

Replaced Autolite with Denso and couldn't be happier. Smoother idle and more power from my 2003 Ranger 4.0. Very satisfied and worth the price paid.

This is one of the best spark plugs on the market today. The heavily used Chevrolet 6.0 engine has a reliability and service life of around 30,000 miles.

1000,000 miles, still good. Great OEM replacement for our 05 Cadillac srx v8 awd. I would recommend. They do what they have to. Give a spark to blow, suck, squeeze, blast.

There is nothing wrong with this product. It's not easy to determine that easily. But that's just because of the construction of my Avalanche 07. I had to bend the metal case to attach it. The first 7 took me about 10 minutes. And a full 30 minutes just to swap out the last one.

These appear to be quality spark plugs. I just removed the NGK platinum tipped spark plugs and was surprised to see that two of the tips had burned out after 40,000 miles. I've seen Autolight platinum plugs run over 50,000 miles on a tip with no sign of tip wear. Time will tell how good they are.

Great spark plug set. They go into the pit and do what they have to do. I haven't noticed any change in fuel economy, but you're not just going to change spark plugs. Anyone who claims that horsepower or consumption have changed is simply wrong. You have to burn the forks completely before you notice a change. I used every fork as a mechanic to make them do what they're supposed to do. Burn the fuel.

Every forum you read about replacing spark plugs on a Ford F-150 says to replace them with specific motorcycle spark plugs. Eh, no. My truck is 2000 and in 20 years Iridium spark plugs have become the new standard. I couldn't find any iridium plugs so I settled on Platinum TT. Other Ford owner forums have said they misfire and are garbage. You couldn't be more wrong! 150,000+ miles with original plugs but they are rated at 60,000 miles at best. These plugs last twice as long as 120,000 miles…