NGK # 1465 Laser Iridium Spark Plug IZTR5B11 --- 8 PCSNEW

Wow. My truck has gone over 150k miles on the stock spark plugs. So I figured it was well past time to do this. And once I pulled the first plug and saw the metal was eaten up to the point it was inside the ceramic, I knew I was right. I used these plugs in conjunction with replacing the wires with premium wires and what a difference. My truck accelerates so much smoother. And when getting on the interstate I accidentally burned tires due to the power and acceleration increase. It truely is like the day I drove it off the lot. Well worth the cost and time.

NGK is a well known leader in spark plugs. One of the top best spark plug in the NGK line up. Authentic, ohms & designation check out. No need for antiseize with chrome plating. Rated for 100K. Check gaps for .40 for chevy 5.3 L, 2-3 slightly plugs had slightly larger gaps and tightened up but still pretty good.

Dropped them in my C5 Corvette....Working fine so far...Same size as the factory Delco's so there will be no piston contact..Good product..

My 2004 GMC 5.3 ltr Yukon with 240,000 + miles was starting to stutter step at initial start up and during acceleration especially after waiting at a stop. Changed out the AC Delco plugs, had about 7 years on them, for these NGK and the change in performance is obvious, the truck moves with certainty, no more stutter, slight hills aren't causing the transmission to down shift. Mileage was not my initial concern so I will see how that goes over time. The plugs were installed as received, no gapping.Had to access some of the plugs from beneath by removong the front wheels and the wheelhouse moldings, made it easier for me anyway. Overall I like these plugs and the price.

My 2001 Chevy Silverado LS (5.3L) needed new spark plug wires and the ACDelco Professional Platinum plugs on it we're getting fairly old so I decided to swap them out as well. These new NGK Laser Iridium plugs are fantastic. I've noticed a small improvement to fuel economy and the engine seems to be running smoother as well.I generally avoid aftermarket parts for my vehicle but NGK has a long proven track record and I'm happy to be using their products. These are definitely an improvement over the old, worn plugs I was using. Remember, DON'T put anti-seize on your spark plugs, they are coated at the factory and don't need any additional coatings!

Bought them because I didn't have much choice but the price was good enough not to pass. I read some of the reviews and was excited to get better mileage but didn't notice a difference.

Went from ngk to acdelco and started misfiring like crazy. Went back to ngk laser iridium, and my engine purrs like a gotdamnned kitten.

These have been in my GMC Sierras V8 for about 7 months now. The truck is running great with them. I didn't really notice any difference however from the old original plugs after I replaced the 11 year old factory plugs with these. The truck drove great then and it drives great now. I really changed the plugs to try to save on gas. My GMC Sierra still burns a lot of gas and it still will not pass a gas station without wanting to stop in. Amazon has the best deal for these plugs as well.

Works great for a 2011 Chevy 1500

Only 7 out of 8 plugs working properly. One was misfiring had to re-use one of the old plugs.

Seller is careless, selling spark plug that does not fit and confirming that it exactly fits, he wasted my time and money by dismantling the engine to reach the spark plugs which takes 2.5 to 3 hours to figure out that it does not fit, I paid $90+tax for bay rental for that, not recommended seller at all.