****** - Verified Buyer
4.5
Made engine run greatAlways my go to spark plugs best aroundPut these into my truck and it immediately ran like it had well new spark plugs. The only down side was they weren’t gaped as the product description said they were.Paid too much. It's does the job. Can't answer about how long they last. Or mileage too soon, before I was getting 15 to 17miles so far 13 to 15.We took delivery of our 01 Tribute in 2000. I thought this was it when we struggled to get over 30mph and started blowing EGR valves. I took care of the blocked catalyst but the engine was still running rough.I took the plunge and got a full set of coils, these NGK spark plugs, intake manifold upper & lower gasket set and PCV valve. I was surprised at the mixed reviews of quality and results of a different major brand of plug I like. NGK have been around and the reviews are consistently clearly positive in subtle meaningful ways. So I gave them an opportunity to prove their worth.After tightening the vapor chamber bolts, reinforcing the leaky PCV tubing and replacing the mentioned parts, came the moment of truth.I could not believe the difference. So smooth, extremely eager to go and pulls better than ever. The long term fuel trims are now neutral or balanced around zero instead of dumping in extra fuel. Instead of 100 miles per tank (when limping) we are getting well over 200 miles and better than we have seen in the last two decades.Now my wife needs to be careful to keep below 80 when on the highway purring at 2000 rpm. The transmission and engine now feel good together with firm smooth but eager response.I suspect these plugs will last the rest of the vehicle life, however long that will be. The important thing is the quality of life is very good at this point.I bought these spark plugs for my 2005 chevy astro. The van has about 200,000 miles and is about to have its rusty core support fall apart.The only reason that I even changed the plugs was because I want to get as many miles out of the van before it falls apart. That was near impossible with the old plugs making it costantly stall out. Since these NGK plugs are about $30 cheaper than AC DELCO, I figured that I would give them a try.I installed the plugs without even changing the wires and distributor back in late May 2020, since the van is falling apart and I didn't want to sink a lot of money into it. Despite only installing the ngk plugs, the van is still running strong in late October with no issues.These are very good quality spark plugs that seem to perform just as good as ac delco. I may even purchase these ngk plugs again for future tune ups on other vehicles.The plugs shipped fast and were just what I was looking for.Good plugs. As with any plug, don't trust the gap number on the box. I had to adjust mine down quite a bit to get what was written one the boxDecided to get Iridium plugs over platinum or other alloys as these will last longer and pay off in the long run. My car has low mileage from an estate and no service records. Original plugs weren't that bad, but are difficult to change in the back.My order was delivered 1 week before expected and is as decribedIn my car right now great product will buy again my car seems to have a but more pep
