🔌 ACDelco GM Original Equipment 41-101 Iridium Spark Plug - Reliable Performance and Durability for Your Vehicle Review

I have chosen ACDelco professional grade Iridium spark plugs (replaced all 6 spark plugs) to ensure the resistance values match the manufacturers specification. It is my understanding that the spark plugs, spark plug wires and coils must match in resistance or early mechanical failure is inevitable. So I replaced all three parts with genuine ACDelco parts. More expensive but the car drives so well.

Installed on a 2004 Pontiac Grand Prix GT1. I bought a car cheap and didn't have time to tune it. I also changed the cables to ACDelco and it works great. At first it had misfires (I think there were 4), anyway mostly uphill or when accelerating hard. Now it's gone and I'm happy. I also used these plugs on a 2005 Impala 3400. Edit: Installed on my 2005 Impala when I bought the car with 60k miles - now I have 210k and they were starting to misbehave a bit. Replaced the same spark plug on my…

I have an old car here and it needs new spark plugs. Always noticed a slight push/pull feel in the hills. I thought about many things but in the end I decided that the candles will fall apart. Put new ones in and the car runs much better. Very smooth and no more bumps on hills. Even if your candles have been rated for 100,000,000,000,000,000,000,000 times, you can replace them sooner as you approach that date. We also manufacture plug wires. After I installed new spark plugs and wires all the…

When it comes to GM's spark ignition system, these spark plugs should do the trick. With this ignition system, the spark plugs fire twice per revolution, so it is important to use a good quality iridium spark plug. This is an OEM plug for many GM products and works particularly well in the 3800 engine. If you want a set of plugs that will last, check out these. They're actually rebranded NGK 5599, but cost about $2 less than NGK brand spark plugs. A platinum seal is built into the ground strap…

I need to be spoiled. No matter how many times I changed the spark plugs on my cars, they always had the gap for the car I ordered them for. I then offer to work on a friend's car and get him to only realize he doesn't have the right clearance for the GM car he was picked for. So first, don't forget to check the spark plug gap specifications for your vehicle. And make an effort to look cool. Make sure you have a splitting tool. Spark plugs must not ignite the fuel. Then the machine works like…

The mechanic told me not to change the spark plugs yet as they are OEM iridium. It was really difficult to change the spark plugs and spark plug wires in my 2002 Lasabre, but I watched a few YouTube presentations and managed to do it. Although the old spark plugs didn't look bad, the machine's engine now runs as quietly as a sewing machine. Performance is noticeably better, especially when accelerating. I also installed a new air filter and will be installing a new fuel filter soon. I AM NOT A…

Perfect for a '03 Pontiac Grand Am GT V6. The plugs fit snugly in the gap. The price was amazing and the discount; $2.00 each. Change plug wires for full operation. Apply a thin coat of dielectric grease to both ends of the cable jackets. Makes for great customization. Took 45 minutes. Change spark plugs only when the engine is cold. I left mine in our garage overnight. I used a TEKTON 3/8 flex head ratchet, Stanley 3 and 6 extensions, a Craftsman 5/8 spark plug wrench. The 6 inch extension…