ACDelco GM Original Equipment 41-162 (19417055) Iridium Spark Plug

AC Delhi is the only spark plug for my car!!!

These fit our 2007 Chevy Suburban 1500 with the 5.3L V8 (engine code 3). Had a check engine light with a P0300 code and frequent misfires on cylinder 1 & 7. I pulled a couple of the old Bosch Iridium plugs that were in it, and wouldn't you know it, the old plug on cylinder 1 was heavily fouled with ash from oil additives (it's a very high-mileage engine, so no surprise there). Cylinder 7 even had a piece of the insulator missing. Wonder how long it's been like that? I ordered two of these four-packs, sold and shipped by Amazon. Other reviews that said they only received single plug instead of four packs. I received the four-packs for 8 total, which was exactly what I expected based on listing. Wonder if the others may have purchased from a third-party seller? In any case the price here on Amazon was better than anywhere else I could find for these plugs, and this was the part number that ACDelco recommended on their site for the Suburban. I replaced all 8 spark plugs and the wires with the ACDelco set. All the plugs I received were properly gapped at 0.040" when I took them out of the boxes, but it's always a good idea to double check them with a gap gauge tool. You'll also need a thin-walled 5/8" deep socket, a variety of extensions, some anti-seize thread lubricant, and at least a moderate pain tolerance. The plug on cylinder 8 is hard to remove and even harder to get back in working completely by feel...every time I work on this truck I want to taze a GM engineer, so if you're friends with one you might want to make sure they're not around while you're doing this job. Despite the pain and suffering, it took me about 2 hours, and after I was done the engine fired right up, has better power, and most importantly, no longer misfires.

Don't get the platinum spark plugs. Get these iridium. They both fit great so don't be fooled like I was. Amazon and AutoZone will tell you the platinum ones fit but if you go to a GM parts finder only the iridium ones are recommended. So if you have a rough idle, intermittent hard crank but eventual start, these will likely solve your problem especially if you're running platinum. I had just rebuilt the heads on my 2007 Chevy Silverado 1500 V8 due to AFM lifter failure. I wasn't about to skip on the spark plugs but I did cheap out. I got maybe 300 miles out of the platinum ones before the rough idle and intermittent hard crank got bad enough for me to notice. It was too subtle to trigger any codes though. A mechanic friend told me these engines are notorious for running like crap due to the spark plugs if 1) they're not *exactly* at 0.040 gap and 2) if you run anything other than iridium. This is true especially for 2007 to 2013. He said there was a TSB for it but I never found it. Still, I replaced them and 600 miles later the truck is running smooth. As far as the gap accuracy please use a wire gauge and not the coin/ramp style. The AutoZone ramp style was off by 0.02 in my case. And trust me, the spark plugs will be messed up. For me only 2 of 8 came accurately gaped. I don't blame the manufacturer but the shipping process. I didn't want to deal with the gapping because you can mess up the electrode if you don't take your time adjusting the guard. This is why I thought getting some from AutoZone would be better. Theirs were bent worse plus they were more expensive. TLDR: get these.

Why did you pick this product vs others?: Fair deal saved about 10 bucks

Great Item !!! Recommended !

Good choice for original design, so you know its quality. With AC Delco you get durability, you get top performance with the best gas mileage.

My truck was way overdue for a general tune-up maintenance that I used to do. Being out of practice for some time, I decided to go ahead and order a set of AC Delco Iridium Spark Plugs (best) to replace the last change done by my mechanic (at least 2 years ago/shame on Me!) ... I finally did the swap a couple of days ago when the weather was not as HOT as it's been. So far, so good, I noticed a great improvement on the gas pedal, however I believe I did a BuBu on the LAST DARN plug on the passenger side (a BITCH to change), and I may have cracked the porcelain shaft while tightening the new last plug. 🤬 All my fault... Just ordered a replacement to change over the weekend, as I am noticing a bit of skip/backfire while idling, and I am almost certain may be that last spark plug that I probably damaged. The older plugs lasted too long (my neglect); however, when I examined the electrode tip and condition, they seemed to be in fairly good shape for such a long time working like Hell! Hope these new AC Delco ones are as good... Will See... 🤞

Truck was sputtering changed plugs and wires runs with power now

Works like a charm.

Excelente calidad

Perfect

About a year ago, I replaced the plugs in my 6.0 Litre engine in my 2009 Yukon Hybrid. I recently noticed a "Fish bite miss" at idle. I scoped the coils and found some weird Ignition waveforms especially on #1. I pulled the plug and found half the insulator broken and missing. They were a "Quality Brand" Platinum Plug in a set, and 2 in the set were different part numbers. There OEM Iridium Plugs corrected the occasional irratic missing at idle and the engine is smooth again. GM recommends these plugs, and I agree.

Right product