Autolite XP5325 Iridium XP Spark Plug, Pack of 1

Good price and they work! Fit just fine in my 3.5L Toyota Aurion.

acabados de buena calidad, ajustaron correctamente en mi automovil, mejoro la marcha de vehiculo, pero una de las bujias venia cerrado el electrodo, aprentemente por un golpe.

I suppose it is a little difficult for the average garage mechanic to compare spark plugs from brand to brand, but cost is always a factor if you are not installing in a high performance vehicle. Autolite has been around for decades and I can honestly say that I have never been disappointed in the performance of any of their products. They are pre-gapped and thread in easily, despite the almost impossibly tight confines of V-8 engines these days. (Always check the gap anyway) These went into a 2015 Ram 1500, which has more room than most, but the plugs near the firewall are covered up with all the ancillary systems. In addition the Hemi requires 2 spark plugs per cylinder, so twice the effort and frustration. In the end, the truck runs great as usual and no difference in fuel mileage. All this adds up to success without paying a professional mechanic at the dealer some $200/hour. My only complaint had nothing to do with the quality of the parts, but the experience I had in getting them delivered. I ordered 16 plugs. It took about a week to get the first 4. I got 6 a week later and the remainder of the plugs were more than 2 weeks later. By this time, I had purchased some of the plugs from a local auto parts dealer to finish the job, so I returned some of them as unneeded.

I used these in my 2006 Toyota Tacoma as a preventative maintenance approach that is not as a repair or to fix a problem. They replaced the Bosch iridium. Therefore I wasn’t expecting any major improvement performance. So, did they improve gas mileage? Not really. Most vehicles 12 years old lose mileage. Did they improve idle? No, wasn’t having any idle problems. Did they improve zip? Maybe a little. Denso says to replace iridium plugs every 30-40,000 miles. Others have said 60-70,000. The Bosch were in a little over 50. Will these last that long. Maybe, time will tell. Bottom line they didn’t degrade performance and at half the cost they are worth it for now.

very good quality