ACDelco GM Original Equipment 41-993 Iridium Spark Plug

Really like this item for my Chevrolet S10 V6 vortec engine these AC Delco 41-993 spark plugs are an upgrade part number for this particular make & model vehicle and wouldn't use any other part number that your manual calls for as it makes a difference in the power of your vehicle as well as how it runs. Getting products that's supposed to actually match your engine for it to run its best and maximum performance is the best way to go if not, you will not get the best quality out of your vehicle and it will run terrible if you choose to get something different cuz it's cheaper and just because it will work. I say you get what you pay for that falls on you when you could just simply get the correct part number that it actually calls for. That's what I suggest. Definitely do that please. These work in my vehicle better than any other spark plug I've put in there

150K+ 2000 v6 s10 was hesitating, backfiring, misfiring, idling & running rough. Mechanic said there was one bad plug. Did a complete tuneup will all AC Delco parts, now is smooth & quiet like a new truck.

Little to expensive but they last long time I have a Chevy blazer plugs are not the easiest to change out So longer life helps M y blazer runs much better with this type of plug

Pre gapped and good to go!

Sometimes you just need original parts. Don't get NGK!!! this fixed my misfire on a 5.7 vortec.

These Iridium plugs will probably outlive my motor, runs great too in my 99 suburban

Excellent Spark plugs for the Silverado. Even on startup and several miles now on the road the power has been more noticeable. Sometimes I forget when I hit the gas, but I quickly Get a reminded with the push back in the seat. Yeah, awesome plugs. That was the only thing I changed that day so that's how I'm judging the plugs!

Just can't beat OEM plugs