Good old standard Autolite Coppers work just as well as anything on the market, as long as you replace them every few thousand miles. At $.99 a piece, you can't beat 'em.
Pros: good performance, excellent value
Cons: short lifespan
Reviews of Autolite parts For Business
Average Rating
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The manufacturer's average rating is calculated based on ratings of all its spare parts. It determines the place in the manufacturer ranking
2.9
Manufacturer Ranking
#179
144
Spare Parts
3
Country
USA
Website
autolite.com
Spare Parts
Comparisons
the plugs are autolite platinums AP3924. the wires are the blue ignitors from techtonics. the rest of the ignition is stock. do i regap the plugs, or should i leave them where they are now. i'm leaning towards leave them since it ran fine before and i don't want to deal with a no start issue when i start it or the first time with the new cam.
Pros: ran fine before
Cons: no start issue
Part number: AP3924
I use Autolite plugs plat 1 cheepos that get me 400 miles per tank and seem to handle continuous high rpm output ( drove across the US in four days)
Pros: good fuel economy, handles high RPM
Vehicle:
Volkswagen Jetta
Autolites last as long for me as the NGK's. Either of them last about 10k miles for me. Any longer than that and I start getting missfires. The Autolites can be found for about $1.00 each
Pros: last 10k miles, cheap
Cons: misfires after 10k miles
Mileage: 10000 km
Once we got a good local supplier for Motorcraft plugs a few years ago we almost never install Autolite.
Pros: good local supplier
Cons: almost never install
There seems to have been quality issues with those for quite a while. I couldn't count how many times we removed fairly new Autolite spark plugs and replaced them with a better brand to fix a misfire.
Pros: fixes misfire
Cons: quality issues
I wouldn’t put autolite plugs even in my lawnmower. NGK or Denso only.
Do not get Autolite, I've seen them cause trouble and issues in Honda engines.
Cons: cause trouble, issues
Vehicle:
Honda
Yesterday, I installed new spark plugs in my 2004 TJ. Going off [this thread](https://wranglertjforum.com/threads/what-are-the-best-spark-plugs-for-my-jeep-wrangler-tj-4-0.4196/) I purchased the Autolite XP985. Originally, I gapped the plugs to .04 based on [this thread](https://wranglertjforum.com/threads/spark-plug-gap-for-4-0.17415/). The jeep ran terribly and actually threw a check engine light.
I went back today and changed all the gaps to .035 based on the note under the hood, but I still think the idle is a bit rougher then what it was before the change.
Cons: rough idle, check engine light
Vehicle:
Jeep
Part number: XP985
I’d never put autolites in a Jeep, send em back and get champions or NGK depending on year and model.
Vehicle:
Jeep Wrangler
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